List of Space Marine Chapters

This is a list of official Space Marine Chapters named by Games Workshop. It does not include any fan-created Chapters, though it does include the Chaos Space Marine Traitor Legions and other Renegade Chapters. Not every Chapter in existence in the Imperium of Man is known. Please note: fan-created Chapters must be posted at the | Warhammer 40k Fanon Wiki and not on this page.

Alpha Legion
The Alpha Legion is presently a Traitor Legion of Chaos Space Marines who serve Chaos Undivided but they were once a First Founding Legion who were corrupted by the Ruinous Powers of Chaos to fight for the Warmaster Horus after prolonged contact with an alien entity, the Cabal. Ironically, the Alpha Legion may have turned to Chaos because they believed that by doing so they would best serve the will of the Emperor. As such, the Alpha Legion's true loyalties remain murky and they may be involved in the greatest long-term deception in human history.

Angels Encarmine
The Angels Encarmine a Second Founding Successor Chapter of the Blood Angels.

Angels Porphyr
The Angels Porphyr are a Loyalist Space Marine Chapter that was founded during the 31st Millennium, their actual Founding and origin unknown.

Angels Sanguine
The Angels Sanguine is a Second Founding chapter of the Blood Angels.

Angels Vermillion
The Angels Vermillion is a Second Founding Successor Chapter of the Blood Angels.

Angels of Absolution
The Angels of Absolution is a Second Founding Chapter of the Dark Angels.

Angels of Ecstasy
The Angels of Ecstasy are a band of Chaos Space Marines who were formerly a Loyalist Space Marine Chapter called the Sons of Ulthunas, who rebelled against the authority of the Imperium during the Ganymethian Betrayal and swore their souls to the service of Slaanesh.

Angels of Fire
The Angels of Fire are a Space Marine Chapter of unknown origins founded during the 36th Millennium. They are sometimes confused with the Fire Angels Chapter.

Angels of Redemption
The Angels of Redemption is a Second Founding Successor Chapter of the Dark Angels.

Angels of Vengeance
The Angels of Vengeance is a Second Founding Successor Chapter of the Dark Angels.

Angels of Vigilance
The Angels of Vigilance is a a Loyalist Space Marine Chapter believed to have been created during the Second Founding from an unknown origin.

Astral Claws
The Astral Claws were created during the 35th Millennium to guard against the numerous threats emerging from the Warp rift called the Maelstrom. They were eventually corrupted by Chaos, rebelled against the Imperium during the Badab War and the Chapter's survivors finally fled into the Maelstrom and became the band of Renegade Space Marines called the Red Corsairs.

Astral Knights
The Astral Knights were a Loyalist Space Marine Chapter from an unknown Founding and origin whose members sacirficed themselves to the last man in a great space battle with the Necrons.

Aurora Chapter
The Aurora Chapter is a Chapter descended from the Ultramarines' gene-seed.

Avenging Sons
The Avenging Sons is a 19th Founding Chapter from the world of Traekonnis Major.

Avengers
The Avengers are a Loyalist Space Marine Chapter of unknown Founding and origin about which almost nothing is known.

Black Consuls
The Black Consuls are a Second Founding Successor Chapter of the Ultramarines. The Black Consuls are recorded in Imperial records as having been annihilated during the Siege of Goddeth Hive, 455.M41. Current Status: Unknown.

Black Dragons
The Black Dragons are a Loyalist Space Marine Chapter from the Cursed 21st Founding. Their gene-seed is defective and riddled with mutation. Specifically, the ossmoudla organ can lead to the development of bony crests on the heads and arms of certain Space Marines of the Chapter. The affected Black Dragons Marines are formed into special units known as Dragon Claws.

Black Guard
The Black Guard is a Second Founding Successor Chapter of the Raven Guard.

Black Templars
The Black Templars are a Second Founding Chapter derived from the Imperial Fists and their Primarch, Rogal Dorn.

Blood Angels
The Blood Angels are one of the First Founding Legions of the Space Marines.

Blood Drinkers
The Blood Drinkers is a Second Founding Successor Chapter of the Blood Angels.

Blood Ravens
The Blood Ravens are a Chapter of Space Marines that prize information greatly, but ironically know little of their earliest centuries of service, though there is some evidence that they are descended from a small group of the Thousand Sons Traitor Space Marine Legion who stayed Loyal to the Emperor during the Horus Heresy. (The Blood Ravens were created by C.S. Gotto for the PC game Dawn of War and its successor, Dawn of War II.)

Blood Swords
The Blood Swords are a Space Marine Chapter created using the gene-seed of the Blood Angels. The Chapter's founding date is not known.

Brazen Claws
The Brazen Claws is a Second Founding Successor Chapter of the Iron Hands.

Brotherhood of a Thousand
The Brotherhood of a Thousand is a loyal Codex Astartes-compliant Chapter of unknown origin.

Brotherhood of Ultramar
The Brotherhood of Ultramar is a Second Founding Successor Chapter of the Ultramarines.

Celebrants
The Celebrants Chapter was founded during the 36th Millennium.

Celestial Lions
The Celestial Lions were founded during the 38th Millennium. Their homeworld is Elysium IX.

Children of Purgatos
The Children of Purgatos are a Chapter of unknown founding and origin, that was declared excommunicate by the Inquisition.

The Consecrators
The Consecrators is a Successor Chapter created from the gene-seed of the Dark Angels.

Crimson Fists
The Crimson Fists are one of the Successor Chapters created during the Second Founding, drawn from the Imperial Fists Legion. Though they remain understrength from the Ork invasion of Rynn's World, the Crimson Fists are a proud and stubborn Chapter, never admitting defeat.

Crimson Guard
The Crimson Guard is a Codex Astartes-compliant Space Marine Chapter.

Damned Company of Lord Caustos
The Damned Company of Lord Caustos is a group of Space Marines that turned to the Chaos Gods after they were declared Traitor by an Inquisitor of the Ordo Hereticus.

Dark Angels
The Dark Angels are considered among the most sinister and secretive of the Loyalist Space Marine Chapters and were one of the First Founding Space Marine Legions.

Dark Hands
The Dark Hands is a Codex Astartes-compliant Chapter of unknown origins.

Dark Hunters
The Dark Hunters is a Space Marine chapter of unknown founding date or origin.

Dark Sons
The Dark Sons is a Space Marine chapter of unknown founding date or origin.

Dark Tusks
The Dark Tusks is a Chaos Space Marine Chapter of unknown founding date or origin. They are mentioned in the novel Brothers of the Snake by Dan Abnett.

Death Guard
A First Founding Space Marine Legion, the Death Guard are one of the nine Traitor Space Marine Legions which betrayed the Emperor during the Horus Heresy, becoming Chaos Space Marines who now serve the Chaos God Nurgle exclusively.

Upon first seeing them, their Primarch Mortarion told them, "You are my unbroken blades. You are the Death Guard."

Death Spectres
The Death Spectres is a Chapter of Space Marines that participated in the Siege of Lelithar and the defence of the Cadian Sector against the 13th Black Crusade.

Death Strike
The Death Strike Chapter participated in the Assault on Moros and acted as the rearguard during the Verdan II Extraction.

Deathwatch
The Deathwatch are not an actual Space Marine Chapter. Instead, they are comprised of kill-squads formed from the veteran Space Marines of other Chapters and serve as the Chamber Militant of the Ordo Xenos of the Imperial Inquisition.

Destroyers
A Second Founding Successor Chapter of the White Scars. Their armour is acid yellow with a red chevron pattern down the arms. Their symbol is two crossed lightning bolts.

Desert Lions
The Desert Lions are known to have participated in Operation Carthage.

Disciples of Caliban
The Disciples of Caliban are a Successor Chapter of the Dark Angels Legion, created late in the 37th Millennium.

Doom Eagles
The Doom Eagles are a Primogenitor, or Second Founding Successor Chapter of the Ultramarines. (Codex Ultramarines, 2nd Edition)

Doom Legion
The Doom Legion is a Space Marine Chapter of unknown founding date or origin.

Doom Warriors
The Doom Warriors is a Codex Astartes-compliant Chapter of unknown founding and origin.

Emperor's Children
The Emperor's Children Traitor Legion is one of the First Founding Space Marine Legions that turned to Chaos during the Horus Heresy and later became Chaos Space Marines wholly devoted to the service of the Prince of Chaos, Slaanesh.

Eagle Warriors
The Eagle Warriors are a fleet-based Progenitor (Second Founding) Successor Chapter of the Ultramarines.

Emperor's Hands
The Emperor's Hands are a Codex Astartes-compliant Space Marine Chapter.

Emperor's Hawks
The Emperor's Hawks is a Codex Astartes-compliant Chapter of unknown origin and founding.

Emperor's Shadows
The Emperor's Shadows are a Successor Chapter created using the gene-seed of the Iron Hands.

Emperor's Spears
The Emperor's Spears are a Space Marine Chapter of unknown origin and founding.

Emperor's Swords
The Emperor's Swords are a Chapter of unknown founding and origin. The Chapter was decimated by the Alpha Legion Traitor Space Marines.

Emperor's Wrath
The Emperor's Wrath Space Marines Chapter is based in Segmentum Solar. They are a Loyalist Chapter of unknown origin and Founding. Their homeworld is in a star system where there are no planets, only asteroids. This system contains three asteroids that have been hollowed out and made into three massive hive cities. This is where the Chapter recruits new members. This Chapter has a deep hatred for xenos like the Tyranids and the Orks. The Emperor's Wrath has purged many Ork-held star systems using the Exterminatus. The Chapter has done the same on many worlds that have fallen to the various Tyranid Hive Fleets. Some of the worlds purged still had large numbers of Imperial forces on them. The Chapter Master and the First, Second and Third Company are currently on a crusade against the forces of Chaos who have occupied a portion of the world of Cadia following Abbadon's 13th Black Crusade against the Imperium.

Emperor's Warbringers
The Emperor's Warbringers Space Marine Chapter wear a gray-green power armor, with crossed swords as its badge.

Emperor's Wolves
The Emperor's Wolves are a Space Marine Chapter whose gene-seed contains an altered wolf gene similar to the one found in the gene-seed of the Space Wolves. The Emperor's Wolves lost their Eighth Company in the Warp.

Excoriators
The Excoriators are a Codex Astartes-compliant Chapter of unknown founding and origin.

Executioners
The Executioners were one of four chapters that rebelled during the Badab War.

Exorcists
The Exorcists were founded during the 36th Millennium, some time before the Age of Apostasy.

Extinction Angels
One of the Successor Space Marine Chapters that turned to Chaos after the Horus Heresy, the Chapter is famous for its assault skill.

Fire Hawks
The Fire Hawks were one of the Space Marine Chapters created during the Cursed 21st Founding, from the Ultramarines' gene-seed.

Fire Lords
The Fire Lords is a Codex Astartes-compliant Chapter. Their founding date has not been established.

Flame Falcons
The Flame Falcons was one of the cursed Space Marine Chapters created during the Cursed 21st Founding.

Flawless Host
The Flawless Host is a Chaos Space Marine warband, believed to be a splinter group of the Emperor's Children Traitor Legion (or at least a warband utilizing their gene-seed).

Flesh Eaters
The Flesh Eaters are a Third Founding Successor Chapter of the Blood Angels.

Flesh Tearers
The Flesh Tearers are a Second Founding Successor Chapter of the Blood Angels.

Genesis Chapter
A Second Founding Successor Chapter of the Ultramarines.

Grey Knights
The Grey Knights Space Marine Chapter acts as the Chamber Militant of the Ordo Malleus, the daemon-hunting branch of the Imperial Inquisition. Their fortress-monastery is located on Titan, the largest moon of Saturn in the Sol System. Every Grey Knight Marine is also a psyker, which makes it all the more remarkable that no Grey Knight has ever turned to Chaos.

Grey Slayers
The Grey Slayers Chapter is only mentioned in the short opening piece to the Realm of Chaos sourcebooks.

Grief Bringers
The Grief Bringers are a Loyalist Space Marine Chapter of unknown origins and Founding that suffered heavy losses fighting against the Warp entities called Enslavers on the world of Valhall II. Their armour is described as "principally a sickly pea-green, with engrailed chevrons of headachey purple."

Guardians of the Covenant
The Guardians of the Covenant is a Successor Chapter of the Dark Angels, of an unknown founding.

Hawk Lords
The Hawk Lords are a Codex Astartes-compliant Chapter of unknown origin whose Power Armour is colored purple with gold trim and chest eagle.

Heralds of Ultramar
The Heralds of Ultramar are a Codex Astartes-compliant Chapter derived from the Ultramarines.

Howling Griffons
The Howling Griffons are a Codex Astartes-compliant who trace their origin from the Ultramarines.

Harbingers of Death
The Harbingers of Death Chapter was founded in the 31st Millennium.

Imperial Fists
The Imperial Fists Chapter was formed from the Imperial Fists Legion, Legion VII of the First Founding Space Marine Legions. They are considered the greatest practicioners of siege warfare in the Imperium of Man.

Imperial Ravagers
The Imperial Ravagers' headquarters orbits the world of Vindict V. They were summoned to perform Exterminatus upon the planet Stalinvast in The Inquisition War trilogy novel Draco.

Imperial Stars
The Imperial Stars are a Codex Astartes-compliant Space Marine Chapter.

Inceptors
The Inceptors are a Second Founding Successor Chapter of the Ultramarines.

Iron Champions
The Iron Champions are a Space Marine Chapter of unknown origin and founding date.

Iron Fists
The Iron Fists are a Successor Chapter of the Iron Hands Legion of unknown founding.

Iron Hands
The Iron Hands are one of the initial First Founding Space Marine Legions.

Imperial Harbingers
The Imperial Harbingers hail from the world of Birmingham ("the Black Planet") and are specialists at drop assaults.

Iron Hearts
The Iron Hearts were briefly mentioned in the short story "Hell in a Bottle" by Simon Jowett published in Let the Galaxy Burn. Their Primarch is mentioned as "Primarch Rubineck", possibly one of the unknown Primarchs listed in the Space Marine codexes. The removal of this Chapter's name may be the result of the content of the short story where at its end a Chaos Daemon Lord gains entrance to the Chapter's training centre via the body of a failed Space Marine. Further canon disregards the use of the name of the Primarch and goes on to state that the Chapter was all but annihilated fighting the Daemon Lord who manifested in their star system. Only two companies, the Sixth and Tenth, remain at full strength.

Iron Knights
The Iron Knights are a Second Founding Chapter; the Iron Knights were one of the many Space Marine Chapters who participated in the defense of Cadia against the Thirteenth Black Crusade.

Iron Snakes
The Iron Snakes is a Second Founding Chapter of unknown origin. The Iron Snakes are tasked with protecting the Reef Stars. The novel Brothers of the Snake by Dan Abnett, is mostly about the exploits of the Iron Snakes' Damocles Squad. The Iron Snakes were one of the many Space Marine Chapters who participated in the defense against the Thirteenth Black Crusade.

Iron Warriors
The Iron Warriors were a First Founding Space Marine Legion that turned Traitor, pledged themselves to Chaos and fought against the Imperium during the Horus Heresy.

Knights of Blood
The Knights of Blood are a Successor chapter of the Blood Angels. They were declared renegades by the Inquisition.

Knights of Gryphonne
The Knights of Gryphonne were a Codex Astartes-compliant Chapter of unknown origin and founding date.

Knights of Order
The Knights of Order are a very early Successor Chapter of the Dark Angels.

Knights of the Raven
The Knights of the Raven are a Codex Astartes-compliant Space Marine Chapter of unknown founding date.

Lamenters
The Lamenters are an unfortunate Chapter of Space Marines who took part, on the losing side, in the Badab War, before being devastated by the Tyranids.

Legion of the Damned (Fire Hawks)
The Legion of the Damned are the most famous of the Chapters of the Cursed 21st Founding and were once known as the Fire Hawks. They are listed as officially dead in Imperium records even though some of their members sometimes appear on battlefields only when the situation for other Imperial forces is dire, turning the tide of battle. Many claim to have seen these living spectres but no thanks can ever be given to them, for they leave as suddenly and as quickly as they appeared.


 * See also Fire Hawks

Luna Wolves
The Luna Wolves are one of the First Founding Space Marine Legions and were led by their Primarch, the Warmaster Horus. After Horus was promoted to the rank of Warmaster so that he could lead the Great Crusade in the Emperor's absence when he returned to Terra, they were renamed the Sons of Horus''. ''They led their fellow Traitor Space Marine Legions to Terra during the climax of the Horus Heresy where they carried out the infamous Siege of the Imperial Palace. When Horus was killed at the hands of the Emperor, the Sons of Horus fled into the Eye of Terror where they took on yet another name: the Black Legion. Today, the Black Legion is led by Horus' self-proclaimed successor, Abaddon the Despoiler.

Liberators
The Liberators are a Second Founding Successor Chapter of the Ultramarines.

Lion Warriors
The Lion Warriors are a Codex Astartes-compliant Space Marine Chapter of unknown origin.

Lords of Wrath
The Lords of Wrath Chapter is mentioned in the 3rd edition of Codex: Imperial Guard on p.32. They are said to have participated in the capture of Decius Mus, the Arch-Heretic of Auscum, with assistance from the 23rd Bruttiam Regiment.

Mantis Legion (Mantis Warriors)
Sometimes referred to as the Mantis Warriors, the Mantis Legion was one of the three Chapters that joined the Astral Claws in rebelling during the Badab Wars. For their sins, they have been required to give up their homeworld and pursue the Emperor's forgiveness by defending the Imperium from their fleet without recruiting new members until their penance has been earned and their disgrace erased.

Marines Errant
The Marines Errant is a fleet-based Space Marine Chapter of unknown origin.

Marines Exemplar
The Marines Exemplar is one of the Chapters founded to make up the Astartes Praeses, the twenty Chapters created to guard the regions surrounding the Eye of Terror.

Marines Malevolent
The Marines Malevolent Chapter was founded in the 32nd Millennium.

Masters of Proteus
The Masters of Proteus are a Space Marine Chapter of unknown founding.

Mentors
Often referred to as the Mentor Legion. The Mentors are a 26th Founding Chapter and are the second Chapter to be designated number 888 (the first one being the destroyed Star Scorpions).

Metamarines
The Metamarines are a Space Marine Chapter that participated in the 13th Black Crusade.

Minotaurs
The Minotaurs are one of the Chapters created during the Cursed 21st Founding.

Mortifactors
The Mortifactors are a Chapter founded during the 40th Millennium from Ultramarines' gene-seed.

Night Watch
The Night Watch is one of the Chapters founded to make up the Astartes Praeses, the twenty Chapters created to specifically guard the regions of the Imperium surrounding the Eye of Terror.

Novamarines
The Novamarines is a Second Founding Successor Chapter of the Ultramarines. The Novamarines are scattered throughout the galaxy, and have not fought together as a Chapter since the early years of the 37th Millennium.

Omega Marines
A Space Marines Chapter of unknown origin or founding raised during the 40th Millennium.

Praetors of Orpheus
The Praetors of Orpheus is a Second Founding Successor Chapter of the Ultramarines.

The Pyre
The Pyre was formerly a Loyalist Chapter given the task of fighting Chaos around the Eye of Terror who turned Traitor themselves.

The Purge
The Purge is a Chaos Space Marine warband.

Purple Stars
A Space Marine Chapter featured in Eye of Terror by Barrington J. Bayley. The Purple Stars' armour is a royal purple with five gold colored stars on the right shoulder. In the novel Eye of Terror, the Purple Stars Marines were sent on a one way mission into the Eye of Terror with a research team, and were wiped out to the last man when their shuttle was boarded.

Rainbow Warriors
The Rainbow Warriors appeared as an example Space Marine Chapter in Rogue Trader (the first edition of Warhammer 40,000 published in 1987), but there is no mention of them in later editions of the game.

Rampagers
The Rampagers are a Second Founding Successor Chapter of the White Scars. Their Power Armour is red. The Chapter symbol is of a fist clenching a yellow lightning bolt. According to How To Paint Space Marines, their squad badges are placed on the outer side of the right greave.

Raptors
The Raptors are a Second Founding Successor Chapter of the Raven Guard. The Chapter first appeared in Rogue Trader-era Warhammer 40,000 as the "Raptor Legion."

Raven Guard
The Raven Guard is one of the original First Founding Legions of Space Marines. The Primarch of the Raven Guard was Corax.

Reclaimers
The Reclaimers are a Chapter that took part in the anti-Tyranid action at the world of Coronia in the Damocles Gulf. They are mentioned several times in Sandy Mitchell's Ciaphas Cain series of novels, and are also one of the Astartes Praeses, the 20 Space Marine Chapters whose only duty is to protect the regions of the Imperium closest to the Eye of Terror. They wear cherry-red Power Armour and their symbol is a pair of gauntleted fists imposed on a blue pentagram.

Red Hunters
The Red Hunters have unusually strong ties to the Inquisition for a Space Marines Chapter; the entire Chapter has been known to serve under an Inquisitor Lord of any of the three main Ordos on occasion.

Red Scorpions
The Red Scorpions are the Chapter responsible for the creation of the Land Raider Helios artillery support vehicle. They are considered perhaps the most intensely Loyalist and puritanical of all the Space Marine Chapters and will not serve beside any xenos or mutants, including even Imperially-sanctioned Abhumans like Squats and Ogryns. However, they have a high-regard for psykers and make extensive use of Space Marine Librarians. They are well known in the Imperium as some of the best melee warriors in the galaxy.

Red Talons
The Red Talons are a Second Founding Successor Chapter of the Iron Hands.

Red Templars
The Red Templars is a Codex Astartes-compliant Chapter of unknown origin or founding date.

Red Wolves
The Red Wolves are a Second Founding Chapter created from the gene-seed of the Iron Hands.

Relictors
The Relictors Chapter was founded in the 36th Millennium as one of the twenty Astartes Praeses Chapters who are tasked with defending the regions of the Imperium closest to the Eye of Terror, though they were originally called the Fire Claws. Following the direction of a Radical Inquisitor of the Ordo Malleus, the Fire Claws sought to collect a great horad of Chaos artefacts that they hoped to against the servants of the Ruinous Powers, thus earning the name Relictors. When the more Puritan factions of the Inquisition learned about this, they moved against the Chapter and forced it to undertake a a century-long Penance Crusade to earn the Emperor's forgiveness for consorting with Chaos. Following further conflicts with the Inquisition concerning their methods of battling Chaos, the Chapter eventually fled into the Eye of Terror and was declared Excommunicate Traitoris by the Ordo Hereticus. Whether this renegade Space Marine Chapter has actually turned to the service of Chaos or is simply still pursuing its own agenda in the battle against the Ruinous Powers remains unknown.

Revilers
The Revilers are a Successor Chapter of the Raven Guard who specialize in jungle warfare.

Salamanders
The Salamanders are a First Founding Space Marine Legion whose Primarch was Vulkan.

Sable Swords
The Sable Swords are a Loyalist, Codex Astartes-compliant Space Marine Chapter said to be founded in the latter years of the 41st Millennium, making them one of the newest Space Marines Chapters to be raised. Their origin and founding remain unknown, but their fortress-monastery is located on the world of Obsidia in the Ultima Segmentum.

Scythes of the Emperor
The Scythes of the Emperor are a Chapter of Space Marines who, along with the Lamenters, were virtually destroyed during the invasion of the Tyranid Hive Fleet Kraken.

Silver Guards
The Silver Guard Chaper turned Renegade after the "Obscuran Uprisings" in the late 34th Millennium.

Silver Skulls
The Silver Skulls is an Ultramarines Successor Chapter founded during the 31st Millennium.

Skull Bearers
The Skull Bearers Chapter wears bone-colored Power Armour.

Sky Sentinels
The Sky Sentinels are a Loyalist Codex Astartes-compliant Space Marine Chapter of unknown origin and Founding.

Sons of Antaeus
The Sons of Antaeus is a Space Marines Chapter created during the Cursed 21st Founding, records concerning the activities of the Sons of Antaeus are few.

Sons of Guilliman
The Sons of Guilliman is a Chapter created during the 33rd Millennium from Ultramarines gene-seed.

Sons of Justice
The Sons of Justice Space Marines are also known as "The Defenders of Varlite" because they fought along side the Storm Lords and the Black Ravens in an apocalyptic battle to defend the fortress of Varlite, an important air field and military camp built around and over the mountain ranges of the world of Valkador V.

Sons of Horus
The Sons of Horus was the name given to the Luna Wolves Legion after their Primarch Horus was named Warmaster by the Emperor, to carry on the Great Crusade in his name after he returned to Terra. Today, the Sons of Horus are the Chaos Space Marines collectively called the Black Legion and they are led by Horus' self-proclaimed successor, Abaddon the Despoiler.

Sons of Malice
The Sons of Malice was founded to be one of the 20 Astartes Praeses Chapters who defend the regions of the Imperium that lie closest to the Eye of Terror.

Sons of Medusa
The Sons of Medusa were a Loyalist Space Marine Chapter involved in the Badab War.

Sons of Orar
The Sons of Orar is a Codex Astartes-compliant Chapter of unknown origin, though the Chapter symbol is closely related to the Ultramarines' symbol. Though the history of the Sons of Orar has been lost, what is known is that they revere Orar, an Ultramarines Captain who won great renown in the wake of the Horus Heresy.

Sons of Vengeance
The Sons of Vengeance turned Renegade after the "Obscuran Uprisings" in the late 34th Millennium.

Sons of Ulthunas
The Sons of Ulthunas turned Renegade during the Ganymathian betrayal. They are currently known as the Angels of Ecstacy and are Chaos Space Marines who serve Slaanesh, the Prince of Chaos.

Soul Drinkers
The Soul Drinkers are a Space Marines Chapter created during the Second Founding, who were drawn from the Imperial Fists Legion. The Soul Drinkers threw off the yoke of the Imperium which they beleived was corrupt and were declared Renegades by the Inquisition, but they are still loyal to the Emperor and their gene-seed was stabilised after numerous mutations.

Space Sharks
There is speculation that the Space Sharks' Chapter was a Successor Chapter of the Raven Guard.

Space Wolves
The Space Wolves are one of the twenty First Founding Legions of the Space Marines. Their Primarch was Leman Russ.

Star Dragons
The Star Dragons are a Codex Astartes-compliant Space Marine Chapter of unknown origin and founding.

Star Phantoms
The Star Phantoms  are a Loyalist Space Marine Chapter of unknown Founding and origin who participated in the Badab War. This Chapter was responsible for the final assault which ended the Badab War. Over five hundred Space Marines assaulted the Imperial Governors' palace on Badab, and during the assault, crippled the the Chapter Master of the Renegade Astral Claws, Huron Blackheart. The Cities of Death expansion book claims Captain Androcles of the Star Phantoms wounded him with a combi-melta in an ambush, although other sources claim that this was accomplished by an orbital bombardment.

Star Scorpions
The Star Scorpions was a Space Marine Chapter of the 25th Founding.

Steel Confessors
The Steel Confessors are a Chapter founded in the 36th Millennium by the Adeptus Mechanicus for their own purposes. They have far more Techmarines than normal Space Marine Chapters and the use of bionic replacements is rampant.

Storm Callers
The Storm Callers are a Chapter of unknown founding and origin.

Storm Giants
The Storm Giants are a Chapter founded during the early 41st Millennium.

Storm Lords
The Storm Lords are a Second Founding Successor Chapter of the White Scars.

Storm Warriors
The Storm Warriors committed their entire Chapter's forces to the defence of the Cadian Sector during the Thirteenth Black Crusade.

Storm Wardens
The Storm Wardens are a Codex Astartes-compliant Space Marine Chapter of unknown founding and origin based on the forbidden world of Sacris in the Calixis Sector of the Segmentum Obscuras. Their entire First Company and Chapter Master Owin Glandwyr were placed into stasis within a sealed portion of the Chapter's fortress-monastery on Sacris with the cooperation of the Inquisition following the Nemesis Incident of 945.M36. Furthermore, the Chapter homeworld of Sacris was forbidden to have any contact with the rest of the Imperium by the Inquisition. The reason for these steps remain unknown.


 * Main article: Storm Wardens

Subjugators
The Subjugators are a 26th Founding Space Marine Successor Chapter of the Crimson Fists.

Taurans
The Taurans are a standard Codex Astartes-compliant Chapter. They have bone-white Power Armour with black greaves, helmet, aquila, backpack, and markings. The Chapter's symbol is a black bull's head on a bone-white field.

Terror Tigers
The Terror Tigers played a small part in the Inquisition War trilogy novel Harlequin. They lost one quarter of their Chapter when a mutant warlord assaulted their homeworld, after which their Chapter Master ordered his own execution as punishment. An exploration team of Terror Tigers rediscovered the lost feral world of Hannibal, intervening in an Eldar attempt to reclaim the world as their own. The team dramatically came to the primitive human natives' rescue.

Thousand Sons
The Thousand Sons are a Traitor Legion of Chaos Space Marines wholly dedicated to the service of the Chaos God Tzeentch who were once one of the First Founding Space Marine Legions before the Horus Heresy. The Legion's Primarch was Magnus the Red, an unusual Primarch who possessed potent psychic powers and a deep knowledge of sorcery. Magnus the Red is presently a Daemon Prince of Tzeentch. The Thousand Sons also had an unusually high number of psykers in their midst, a number which only increased after they swore themselves to the service of the Changer of Ways, who is the Chaos God of Sorcery. Due to the workings of a potent sorcerous spell called the Rubric of Ahriman, none of the Thousand Sons Chaos Marines possess organic bodies any longer; instead, their souls have been directly fused with their suits of ancient Power Armour. The Thousand Sons may also have included a small contingent of Space Marines who remained loyal to the Emperor during the Heresy, refused to flee into the Eye of Terror and split off to form their own Loyalist Chapter. The descendants of these Space Marines may be the current Blood Ravens Chapter, which like the Thousand Sons possesses an unusual number of psykers among its Battle-Brothers.

Thunder Barons
The Thunder Barons are a Traitor Chapter of Chaos Space Marines mentioned in Soul Drinker and Daemon World.

Tiger Claws
The Tiger Claws Chapter was the original name for the Traitor Marines who now call themselves the Astral Claws. They were depicted as wearing black and orange tiger-striped Power Armour with a tiger head as their symbol (The Badab War, Rick Priestley). The name is no longer recognised by Games Workshop as canon.

Ultramarines
The Ultramarines, one of the First Founding Space Marine Legions, are considered the greatest of all the Space Marine Chapters in the Imperium of Man, almost single-handedly holding the Imperium together after the Horus Heresy. They are currently led by their Chapter Master, Marneus Augustus Calgar. Their homeworld is Macragge in the Imperial realm of Ultramar. The Ultramarines have more Successor Chapters than any other First Founding Chapter.

Valedictors
The Valedictors were originally a First Founding Legion which saw action on the Eastern Fringe of the Imperium against Orks, Eldar, and Traitors during the Horus Heresy. They were described in detail in two Epic articles in White Dwarf magazines 126 and 136, circa 1990-91. The status of the Valedictors changed in White Dwarf 235, where they are said to be of a "later founding," (post-Second Founding). Therefore, in the most recent canon literature, the Valedictors are no longer a First Founding Legion. The Valedictors' Power Armour is oak-leaf green with a teardrop on the kneecap plate with a Roman numeral inside to denote the company. The Chapter symbol is a winged "V".

Violators
The Violators are a Traitor Chapter of Chaos Marines dedicated to Slaanesh. Their armour is a shade of blue and their Chapter symbol is a lightning bolt crossed with a dagger. They are known to use electrical pulses to stimulate certain parts of the brain to increase pleasure. They fought in the 13th Black Crusade; they mostly saw combat in the Cadian Sector. During this war they repeatedly took recruits from the worst Imperial prisons that they liberated during their assaults.

Warp Ghosts
The Warp Ghosts is a Chapter of unknown founding and origin, who turned Renegade.

White Consuls
The White Consuls are a Second Founding Chapter of Space Marines. They are listed in the Apocrypha of Davio as having derived from the Ultramarines' gene-seed.

White Minotaurs
The White Minotaurs are a Codex Astartes-compliant Chapter of unknown origin and founding date.

White Panthers
The White Panthers were part of the 26th Founding. They are organized according to the Codex Astartes.

White Scars
The White Scars were one of the First Founding Legions of Space Marines. They are known and feared throughout the Imperium for their highly mobile way of war.

White Templars
The White Templars are a Codex Astartes-compliant Chapter, rumoured to be descended from the Black Templars.

Wolf Brothers
The Wolf Brothers were a Second Founding Successor Chapter of the Space Wolves. They were later eradicated by the Inquisition due to rampant mutation of the unstable Space Wolf gene-seed.