List of Space Marine Chapters

This is a list of official Space Marine Chapters created by Games Workshop. It does not include any fan-created Chapters, though it does include the Traitor Legions and other Renegade Chapters of Chaos Space Marines as well as those Space Marine Chapters considered Excommunicate Traitoris by the High Lords of Terra whether they serve the Dark Gods or not. This is not a complete list as 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. A separate list also exists for Renegade Space Marine Chapters and Chaos Space Marine warbands here.

J
No known Chapters' names begin with the letter "J."

Q
No known Chapters' names begin with the letter "Q."

X
No known Chapters' names begin with the letter "X."

Z
No known Chapters' names begin with the letter "Z."