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List of sectors

This is a list of all of the galaxy's known Sectors and Subsectors as well as similar regions designated by the Imperium.

Sector(etc) Subsectors Segmentum Systems Worlds Notes Sources
Abrint The Sixth Cult of the Denied (Short Story)
Acteron Pandraxx Eastern Fringe See Pandraxx Subsector See Pandraxx Subsector Battle Missions, pg. 9
Agripinaa Obscurus See Agripinaa Sector See Agripinaa Sector Eye of Terror Campaign Agripinaa Sector Map (and Codex: Eye of Terror (3rd Edition) where identical details are present)
Amerikon Tempestus Battlefleet Gothic Rulebook, pg. 117
Antian Warhammer 40,000: Relic
Armageddon Armageddon
Justicar
Golgotha
Solar Armageddon Armageddon[sc]
Golgotha
See Armageddon Subsector [Needs Citation]
Askellon Asphodel Depths
Cyclopia
Rubicon
Stygies Cluster
Thule
Obscurus See Askellon Sector See Askellon Sector Dark Heresy Second Edition, pgs. 322-323
Athelaq See Waaagh! Grimtusk Codex: Space Wolves (5th Edition), pg. 19
Athena Codex: Eye of Terror (3rd Edition), pg. 7
Badab Ultima See Badab Sector Badab II[sc] See Badab War Imperial Armour Volume Nine[Needs Citation]
Imperial Armour Volume Ten[Needs Citation]
Bakhar Ultima Bakhar Prime
Zanzamon
Warhammer 40,000: Fireteam website PDF Rule Book, pg. 12 (last accessed 23rd October 2021)
Barbarus Urphir Tempestus Anphellion Beta Anphelion IV (satellite) Imperial Armour Volume Four, pg. 10
Bastion See Bastion Sector Solo-Baston Emperor's Mercy (Novel)[Needs Citation]
Boras Minor Therion Ultima The Bleeding Chalice (Novel), Chapter One
Borodance Obscurus Ravenor Rogue (Novel) Part Three, Chapter Seven
Cadian Cadian Obscurus Cadian Cadia Prime[sc], see Cadian System [Needs Citation]
Cal-Sek See Fenright Tithe Wars Imperial Armour Volume Nine, pg. 92
Calaphrax Cluster Exyrion[sc]
Pandrosar
Tintaroth
Will of Iron (Comic Series), Issues #0-2
Caligari Tenebra Tempestus Black Library: The Caligari Archivum
Calixis Adrantis Nebula
Drusus Marches
Golgenna Reach
Hazeroth Abyss
Josian Reach
Malfian Subsector
Markayn Marches
The Periphery
Spinward Front
Obscurus See Calixis Sector See Calixis Sector Dark Heresy Core Rulebook[Needs Citation]
Caradryad Tempestus Codex: Chaos Daemons (4th Edition), pg. 25
Charadon Anungul
Charus
Lirac
Obolis
Palan
Phlegyr
Psyphos
Urshan
Ultima See Charadon Sector See Charadon Sector See Charadon Campaign War Zone Charadon - Act I: The Book of Rust, pgs. 8-9
Chelio Roxanzand Roxanzand Codex: Assassins (3rd Edition), pg. 4
Chiros Agritha
Kalidar
Tempestus Gerat
Kalidar
Geratomro
Kalidar IV[ssc]
See Waaagh! Gratzdakka Baneblade (Novel), Interstitial, pgs. 17-18

Shadowsword (Novel), Interstitial, pgs. 35-36

Chonma Solar Hermetica Imperial Armour Volume Ten, pg. 109
Cirillo Ultima Golden Chain The Martyr's Tomb (Novel), Appendix
Coronid Deeps Coronid Reach
Cyclops Cluster
Grail Abyss
Border of Obscurus and Ultima Manachea [Needs Citation]
Corribra Tempestus Asperity The Third War For Armageddon Fleet Lists - Ork Space Hulk - Blasta O' Gork (archived page, last accessed via Wayback Machine 10th January 2023)
Crucis Laius Rift Laius Rift
Demeter Ultima Pandorax Pythos [Needs Citation]
Donian Pacificus Nickel V See Donian Crusade Index Astartes II, pg. 50
Donorian Tempestus Donoria Prime See Clawed Fiend Gathering Storm: Fracture of Biel-Tan, Chapter 1
Duros See Waaagh! Thogza Codex: Orks (4th Edition), pg. 8
Endymion Cluster Ultima See Endymion Cluster See Endymion Cluster Imperial Armour Volume Nine[Needs Citation]
Imperial Armour Volume Ten[Needs Citation]
Ephialtis Tempestus Ceocan The Oubliette (Novel)[Needs Citation]
Fenris Svarteldari Solar Fenris Fenris
Midgardia
War Zone Fenris: Wrath of Magnus[Needs Citation]

White Dwarf 452, pg. 19

Finial Obscurus Warhammer 40,000 5th Edition Rulebook, pg. 116
Formosa Epsilon Regalis
Glovoda
Codex: Grey Knights (5th Edition), pg. 45
Forsarr Kastorel-Severus Tempestus Kastorel Kastorel-Novem Imperial Armour Volume Eight[Needs Citation]
Fourth Quadrant Sulsalid Solar Lycanthos Lycanthos Secundus See Fourth Quadrant rebellion Imperial Armour Volume Nine, pgs. 57-59 & pgs. 100-101
Gilead Ultima The Long Games at Carcharias (Short Story)
Gothic Bhein Morr
Cyclops Cluster
Gethsemane
Lysades
Orar
Port Maw
Quinrox Sound
Obscurus See Gothic Sector See Gothic Sector Battlefleet Gothic Rulebook[Needs Citation]
Grimmok Blood Angels Painting Guide – Sons of Sanguinius, pg. 25
Gulgorahd Protectorate Ultima Gulgorahd
Memlock
The Horus Heresy Book Six - Retribution, pgs. 130-143
Helioret Ultima Luxor Imperial Armour Volume Nine, pg. 119
Herakon Cluster [Needs Citation]
Hodur Ultima Talon
Endragiga
Codex: Tyranids (5th Edition), pg. 29
Inca Ultima Chapter Approved 2004 The Cursed Founding
Instar Little Horus (Short Story)
Ixaniad Obscurus Scoth Deathwatch: Rites of Battle, pg. 156
Jericho (lost) Ultima See Jericho Reach See Jericho Reach Deathwatch Core Rulebook[Needs Citation]
Kadus Ravaged by the ork hordes of Ghazghkull in the Age of the Dark Imperium. Codex: Deathwatch (8th Edition), pg. 27 — The Vigil of Aeons: The Doom of Starshield
Karthago Ultima Sidon Ultra[sc] Imperial Armour Volume Nine, pg. 31
Imperial Armour Volume Ten[Needs Citation]
Khymaran Drift Ultima See Khymaran Drift See Khymaran Drift Imperial Armour Volume Nine[Needs Citation]
Imperial Armour Volume Ten[Needs Citation]
Kiltor See Kiltor Sector Eastern Fringe Darkfall See Kiltor Sector Codex: Tyranids (5th Edition), pg. 29
Korianis Aurelia Ultima See Subsector Aurelia See Subsector Aurelia Warhammer 40,000: Dawn of War II[Needs Citation]
Warhammer 40,000: Dawn of War II - Chaos Rising[Needs Citation]
Warhammer 40,000: Dawn of War II - Retribution[Needs Citation]
Rogue Trader Core Rulebook, pg. 305
Lithesh Timbra Ultima Kaurava Kronus, worlds of Kaurava system Warhammer 40,000: Dawn of War - Dark Crusade[Needs Citation]
Warhammer 40,000: Dawn of War - Soulstorm[Needs Citation]
Savage Scars (Novel), Prologue
Loki Hebrides Ultima Rynnstar
Freiya
Rynn's World
Badlanding
Rynn’s World (Novel)[Needs Citation]
The Few (Short Story)
Macharian Pacificus Crucible 7: Welcome to the Macharian Sector (last accessed 25th March 2023)
Macharius Alpha Caracros Pacificus Istrouman Istrouma Warhammer Community: Index Astartes: The Tome Keepers! (Posted on 13/11/2020) (last accessed 29th October 2022)
Machorta Pacificus Avenging Son (Novel), Chapter 19
Magog Cluster Ultima See Magog Cluster See Magog Cluster Imperial Armour Volume Nine[Needs Citation]
Imperial Armour Volume Ten[Needs Citation]
Magulanox Cernis
Quintus
Cernis IV
Quintus
Hunt for Voldorius (Novel), Magulanox Sector (Interstitial within Chapter 9, between pgs. 224-225)
Mandragora See Aegisine Crusade Imperial Armour - Apocalypse II, pg. 35
Mitre Gulf Burjan's World The Masters, Bidding (Short Story)
Momed Little Horus (Short Story)
Nachmund Gorandahl
Nachmund
Obscurus Nachmund
Vigilus
Dharrovar
Sangua Terra
Vigilus
See Nachmund Rift War
Narasima Obscurus Banish Imperial Armour Volume Ten, pg. 125
Nemesys Tempestus Bheta-Decima Emergence site of the Gallowdark Kill Team: Into the Dark rule book, pgs. 8-12
Nephilim Codex: Dark Angels (6th Edition), pg. 73
Nepthis See Fenright Tithe Wars Imperial Armour Volume Nine, pg. 92
Nostramo Ultima Nostramo
Occludus
The Horus Heresy Book Six - Retribution, pgs. 130-144
Codex: Space Marines (5th Edition), pg. 30
Octarius Ultima See Octarius Sector Codex: Tyranids (5th Edition), pgs. 28-31
Opal Deathwatch: Deadhenge (Short Story)
Oqueth Little Horus (Short Story)
Orpheus (lost) Capitoline
Deluvian
Drucillan
Tempestus Libethra (destroyed)
Saint Marduk's Bane

See Orpheus Sector

Imperial Armour Volume Twelve[Needs Citation]
Palatine See Saint Celestine [Needs Citation]
The Pale Stars Ultima See The Pale Stars See The Pale Stars Imperial Armour Volume Nine[Needs Citation]
Imperial Armour Volume Ten[Needs Citation]
Pandora Codex: Tyranids (2nd Edition)[Needs Citation]
Pegasus Solar Hymir II Codex: Imperial Guard (3rd Edition, 1st Codex), pg. 31
Priam Darkstation Battlefleet Gothic Resources: Ships of the Gothic Sector, pg. 124 (accessed 2012.06.30)
Pyrus Reach Dark Millennium (game system)
Red Scar Ultima Baal
Cryptus
Vitria
Baal
Satys
Invaded by the Tyranids of Hive Fleet Leviathan. Shield of Baal: Deathstorm (Novella), Prologue

The Devastation of Baal (Novel), Chapter Two

Reductus Hadron Belt Tempestus Phobian
Rapture
Stratos
Codex: Space Marines (5th Edition), pg. 30

Codex: Imperial Knights (6th Edition), pg. 11
Fires of War (Short Story)

Sabbat Worlds Cabal Systems
Carcaradon Cluster
Erinyes Group
Khan Group
Newfound Trailing Group
Nubila Reach
Pacificus Formal Prime See Sabbat Worlds Crusade A Ghost Return (Short Story)Gaunt's Ghosts: The Founding (Omnibus)
Sadusyne See Fenright Tithe Wars Imperial Armour Volume Nine, pg. 92
Sangramentia Dennar IV See Howling Griffons Imperial Armour Volume Nine - The Badab War - Part One, pgs. 126
Saras Saras VII See Waaagh! Ugblitz Imperial Armour Volume Eleven, pg. 74
Sargos Dark Millennium Online Official Website
Scarla Scarla Trigate Subsector Tempestus See Scarla Sector See Scarla Sector Inquisitor: Conspiracies - The Cirian Legacy, pg. 3
Scarus Antimar
Angelus
Helican
Kerak
Ophidian
Vincies
Obscurus See Scarus Sector See Scarus Sector The Scarus Sector at Fantasy Flight Games (site accessed 2009.12.02)
Imperial Armour Volume Five, pg. 6
Sexton Ultima Sexton QX-937 Located in the Damocles Gulf. Storm of Damocles (Novel), Chapter Four
Shadefrost Shadefrost Prime White Dwarf 452, pg. 59
Solar Solar Solar Sol Terra
Mars[sf]
See Sol System [Needs Citation]
Spartus Tempestus White Dwarf 282 (UK), pg. 47
Stygius Obscurus/Ultima Dhobash
Khravos
Mordian
Prismata
Salamar
Urtek
Mordian See Invasion of the Stygius Sector Warhammer 40,000 8th Edition Rulebook, pgs. 164-167
Taebian Ultima See Taebian Sector Nemesis (Novel), Chapter Five
Talis Munus Caerulus-Primaris Solar Betalis Betalis III Imperial Armour Volume Eleven, pg. 8
Tamahl Obscurus Battlefleet Gothic Rulebook, Inside Back Cover
Tertius Veritus Solar Talledus Benediction See Veritus Sub-Sector Psychic Awakening: Faith and Fury, pgs. 6-10

Throne of Light (Novel), Appendix: Notes on the Crusade

Thramas Aegis Ultima Desperation
Sheol
Tsagualsa
See Thramas Crusade [Needs Citation]
Trail of Saint Evisser Solar See Trail of Saint Evisser Trepytos[sc] See Trail of Saint Evisser Grey Knights (Novel)[Needs Citation]
Traxis Ultima Warhammer 40,000: Conquest
Uhulis Tempestus Krieg Warhammer 40,000 5th Edition Rulebook[Needs Citation]
Ulik Ultima Codex: Tyranids (5th Edition), pg. 29
Ullanor Ullanor
Nalkari
New Mitama
[Needs Citation]
Ultima Ultramar Ultima Konor
Macragge
Masali
Talasa
Veridia
Macragge[sc]
Calth
Talasa Prime
Talassar
See Ultramar Codex: Space Marines (8th Edition), pg. 25
Vandreggan Euesa The Divine Word (Short Story)Legacies of Betrayal (Anthology)
Veldin Apocalypse, pg. 171
Veneros Phirus Attacked by tendrils of Hive Fleet Kraken, which were purged by the Deathwatch. Last Watch (Short Story) - Xenos Hunters (Anthology)
Vensine Kolagar Deathwatch: The Flesh of the Angel (Short Story)
Vertex Vertex
Viceroy Niaides Ultima Maginor Malleus (Novel)[Needs Citation]
Vidar Ironhame
Zorya
Ultima
(Eastern Fringe)
Darkfall
Doranno
Gaios
Carnac
Damnos
Davatas
Hypnoth
Mandragora
Praedis Zeta
Prism
Safehold
Sanctuary 101
Schrödinger VII
Somonor
Warhammer 40,000 6th Edition Rulebook, pg. 409
Vordral Old Earth (Novel), Chapter Eighteen
Yasan Ultima Chogoris
Gartuli
Thaxis
Chogoris Codex: Space Marines (8th Edition), pg. 34

Codex Supplement: White Scars (8th Edition), pgs. 8-9 - Chogoris

Zeist Ultima Augura
Praetonis V
Codex: Space Marines (5th Edition), pg. 48
Unknown Bastior Pacificus Formidyre Sanctum Attacked by Hive Fleet Grendyllus during the Fourth Tyrannic War.
Unknown Belis Corona Obscurus Belis Corona Belis Corona
Nemesis Tessera
Unknown Cerabas
Unknown Charybdis Arronax II Headhunted (Short Story) - Xenos Hunters (Anthology)
Unknown Chinchare Obscurus Chinchare System Chinchare Codex: Eye of Terror (3rd Edition), pgs. 24-25
Unknown Contqual Shardenus See Purging of Contqual Wrath of Iron (Novel), Chapter One
Unknown Corvus Ultima See Corvus Sub-sector Index Astartes II, pg. 50
Unknown Daedalian Rogue Trader Janus Draik had contacts in this subsector. Warhammer Quest: Blackstone Fortress Background, pg. 4
Unknown Durian Iron Hands (Novel), Chapter 2
Unknown Elara's Veil Elysium IX
Khamun-Sen
Nemeton
[Needs Citation]
Unknown Endasch Endasch Codex: Deathwatch (8th Edition), pg. 24 - The Vigil of Aeons: The Hammer of the Deathwatch
Unknown Geryon Lakonia Lakonia Soul Drinker (Novel) - The Soul Drinkers Omnibus, Chapter One
Unknown Greygar Ultima Part of the Cordon Impenetra. War Zone Octarius - Book 1: Rising Tide, pgs. 8-9
Unknown Hatha Ultima Ozyma-138 Menatar Exhumed (Short Story) - Xenos Hunters (Anthology)
Unknown Heingaard Ultima Part of the Cordon Impenetra. War Zone Octarius - Book 1: Rising Tide, pgs. 8-9
Unknown Janos Deathwatch (Novel), Act 1, Chapter 3


Unknown Javarian Warhammber Community: Psychic Awakening: The Feast (Posted on 24/02/2020) (Last accessed 25 February 2020)
Unknown Kebban Psychic Awakening: Blood of Baal, pg. 20 - Echoes of Awakening
Unknown Lammas Antimon
Kernunnos
Wolf at the Door (Short Story)
Unknown Lorphax Ultima Conquest 09 - Outbreaks of War
Unknown Lotus Pacificus/Tempestus Dominion
Unknown Medusan Obscurus Sthenelus System Medusa Codex Supplement: Iron Hands (8th Edition), pgs. 8 & 17
Unknown Nerenthud Codex: Aeldari (9th Edition), pg. 69
Unknown Ny'Drinah Pacificus/Tempestus Iiralox IV
Xiloci II
Adeptus Titanicus: Crucible of Retribution, pg. 19

Warhammer Community: Crucible of Retribution: The Story (Posted on 23/10/2020) (last accessed 7th November 2020)

Unknown Omei Ultima Voidsong (Short Story)
Unknown Orco-Pelica Ultima Voidsong (Short Story)
Unknown Pankallis Ultima Part of the Cordon Impenetra. Saw major fighting in the Octarius War. War Zone Octarius - Book 1: Rising Tide, pgs. 8-9
Unknown Perditha Ultima Codex: Craftworlds (8th Edition), pg. 29
Unknown Prath Veil Obscurus Antioc Imperial Armour Volume One, pg. 8
Unknown Proxima Sol-Tertius Solar The Path of Heaven (Novel), Epilogue
Unknown Ras Ras Shakeh Ras Shakeh Blood of Asaheim (Novel), Chapter Four
Unknown Sagan Ultima Located in the Maelstrom Zone. Imperial Armour Volume Nine[Needs Citation]
Imperial Armour Volume Ten[Needs Citation]
Unknown Sanctus Ultima Sanctus Reach Alaric Prime
Obstiria
See Red Waaagh! [Needs Citation]
Unknown Scelus Obscurus Scelus Codex: Eye of Terror (3rd Edition), pg. 24

The 13th Black Crusade (Background Book), pgs. 32-33

Unknown Thirsis Ultima What Wakes in the Dark (Short Story)
Unknown Verlax Tertius Watchers of the Throne: The Regent's Shadow (Novel), Chapter 7 - Jek
Unknown Vorsk Castellax
Scythia
Vorsk
See Waaagh! Gragnatz Warhammer 40,000 5th Edition Rulebook, pgs. 162-164
Unknown Wheel of Fire Ultima See Wheel of Fire Campaign Wolfsbane (Novel), Chapter 9
Unknown Xibana Reaches Campaigns of the Age of Darkness: The Siege of Cthonia, pg. 8
Unknown Yossarian Bacchus
Hedon
Outgunned (Novel), Chapter Two
Unknown Zypher See Waaagh! Arbuttz Deathwatch: Rites of Battle, pg. 156

See also