Ultimate Alien Anthology is a companion book for the Star Wars Roleplaying Game, brought to you by Wizards of the Coast. The writing team included Eric Cagle, Cory J. Herndon, Michael Mikaelian, Steve Miller, Owen K.C. Stephens, and J.D. Wiker; its initial release was on April 19, 2003.
This sourcebook details 180 different species from the expansive Star Wars universe, pulling from both well-known and more obscure sources. Visual comparisons are provided, showcasing each species alongside three others to illustrate their appearance and relative size. Furthermore, a supplementary web document was later made available, presenting information on two more species.
- Abyssin
- Adarian
- Advozse
- Amanin
- Anomid
- Anx
- Anzat
- Aqualish
- Arcona
- Arkanian
- Ayrou
- Balosar
- Barabel
- Baragwin
- Bartokk
- Besalisk
- Bimm
- Bith
- Blood Carver
- Bothan
- Caamasi
- Caarite
- Cathar
- Celegian
- Cerean
- Chadra-Fan
- Chagrian
- Charon
- Chev
- Chevin
- Chiss
- Clawdite
- Codru-Ji
- Colicoid
- Cragmoloid
- Dantari
- Dashade
- Defel
- Devaronian
- Draethos
- Drall
- Dressellian
- Dug
- Duros
- Ebranite
- Elom
- Elomin
- Em'liy
- Ewok
- Falleen
- Farghul
- Feeorin
- Filordus
- Frozian
- Gamorrean
- Gand
- Geonosian
- Givin
- Gossam
- Gotal
- Gran
- Gungan
- Herglic
- H'nemthe
- Ho'Din
- Houk
- Hutt
- Iktotchi
- Iotran
- Ishi Tib
- Ithorian
- Jawa
- Jenet
- Kaminoan
- Kel Dor
- Kerestian
- Khil
- Khommite
- Kian'thar
- Kitonak
- Klatooinian
- Koorivar
- Krevaaki
- Krish
- Kubaz
- Kushiban
- Lannik
- Lepi
- Menahuun
- Miraluka
- Mon Calamari
- Morseerian
- Mrlssi
- Muun
- Myneyrsh
- Nagai
- Nautolan
- Nazzar
- Neimoidian
- Neti
- Nikto Esral'sa'Nikto Gluss'sa'Nikto Kadas'sa'Nikto Kajain'sa'Nikto M'shento'su'Nikto
- Nimbanel
- Noehon
- Noghri
- Nosaurian
- Nuknog
- Omwati
- Ortolan
- Pacithhip
- Pa'lowick
- Phindian
- Pho Ph'eahian
- Psadan
- Quarren
- Quermian
- Qwohog
- Ranat
- Ranth
- Rodian
- Ruurian
- Rybet
- Ryn
- Sakiyan
- Sanyassan
- Sarkan
- Sauvax
- Selonian
- Shi'ido
- Shistavanen
- Skakoan
- Skrilling
- S'kytri
- Sludir
- Sluissi
- Snivvian
- Spiner
- Squib
- Ssi-ruu
- Sullustan
- Talz
- Tarasin
- Tarro
- Taung
- Temolak
- Thakwaash
- Thisspiasian
- Tiss'shar
- Togorian
- Togruta
- Toong
- Toydarian
- Trandoshan
- Trianii
- T'surr
- Tunroth
- Tusken Raider
- Twi'lek
- Ubese
- Ugnaught
- Umbaran
- Verpine
- Vodran
- Vor
- Vratix
- Vuvrian
- Weequay
- Whiphid
- Wookiee
- Woostoid
- Xexto
- Yarkora
- Yevetha
- Yinchorri
- Yuuzhan Vong
- Yuzzem
- Zabrak
- ZeHethbra
- Zeltron

- Aerobat
- Beastwarden
- Big-Game Hunter
- Bodyguard (Distinct from the Noghri Bodyguard)
- Changeling
- Findsman (including but not reduced to Gand Findsman )
- Mystic Agent
- Telepath
- Adari (Adarian)
- Af'El (Defel)
- Agriworld-2079 (Skrilling)
- Alpheridies (Miraluka)
- Alzoc III (Talz)
- Ando (Aqualish)
- Ankus (Cragmoloid)
- Antar 4 (Gotal)
- Anzat (Anzat)
- Aralia (Ranat)
- Arkania (Arkanian)
- Balosar (Balosar)
- Barab I (Barabel)
- Byss (Abyssin)
- Caamas (Caamasi)
- Caaraz (Ranth)
- Caarimon (Caarite)
- Cadomai Prime (Snivvian)
- Castell (Gossam)
- Cathar (Cathar)
- Celegia (Celegian)
- Cerea (Cerean)
- Chad (Chadra-Fan)
- Champala (Chagrian)
- Clak'dor VII (Bith)
- Coachelle Prime (Lepi)
- Colla IV (Colicoid)
- Csilla (Chiss)
- Cularin (Tarasin)
- Dantooine (Dantari)
- Devaron (Devaronian)
- Dorin (Kel Dor)
- Drall (Drall)
- Dressel (Dressellian)
- Duro (Duros)
- Ebra (Ebranite)
- Elom (Elom, Elomin)
- Endor (Ewok)
- Falleen (planet) (Falleen)
- Farrfin (Farghul)
- Filordis (Filordus)
- Froz (Frozian)
- Gamorr (Gamorrean)
- Gand (Gand)
- Garban (Jenet)
- Gentes (Ugnaught)
- Geonosis (Geonosian)
- Giju (Herglic)
- Glee Anselm (Nautolan)
- Gravlex Med (Anx)
- Hirsi (Qwohog)
- H'nemthe (H'nemthe)
- Honoghr (Noghri)
- Iktotch (Iktotchi)
- Iotra (Iotran)
- Iridonia (Zabrak)
- Ithor (Ithorian)
- Jiroch-Reslia (Tunroth)
- Kamino (Kaminoan)
- Kashyyyk (Wookiee)
- Kerest (Kerestian)
- Kerilt (Caamasi)
- Khomm (Khommite)
- Kintan (Nikto)
- Kinyen (Gran)
- Kirdo III (Kitonak)
- Klatooine (Klatooinian)
- Kooriva (Koorivar)
- Krevas (Krevaakil)
- Kubindi (Kubaz)
- Kushibah (Kushiban)
- Lamaredd (Menahuun)
- Lannik (Lannik)
- Lao-mon (Shi'ido)
- Leritor (Sauvax)
- Lijuter (Houk)
- Lowick (Pa'lowick)
- Lwhekk (Ssi-Ruu)
- Malastare (Dug)
- Mandalore (Taung)
- Maridun (Amanin)
- Maya Kovel (Ayrou)
- Moltok (Ho'Din)
- Mon Calamari (Mon Calamari, Quarren)
- Mrlsst (Mrlssi)
- Munto Codru (Codru-Ji)
- Muunilinst (Muun)
- Myrkr (Neti)
- Naboo (Gungan)
- Nagi (Nagai)
- Nal Hutta (Hutt)
- Nazzri (Nazzar)
- Neimoidia (Neimoidiann)
- New Plympto (Nosaurian)
- Nimban (Nimbanel)
- Noe'ha'on (Noehon)
- N'zoth III (Yevetha)
- Ojom (Besalisk)
- Omwat (Omwati)
- Orto (Ortolan)
- Phindar (Phindian)
- Pho Ph'eah (Pho Ph'eahian)
- Quermia (Quermian)
- Ragna III (Yuzzem)
- Riflor (Advozse)
- Roche Asteroid Belt (Verpine)
- Rodia (Rodian)
- Ruuria (Ruurian)
- Rydar II (Ranat)
- Ryloth (Twi'lek)
- Ryyk (Neti)
- Sakiya (Sakiyan)
- Sanyassa IV (Sanyassan)
- Sanza (Krish)
- Sarka (Sarkan)
- Selonia (Selonian)
- Shalyvane (Em'liy)
- Shaum Hii (Kian'thar)
- Shili (Togruta)
- Shimia (Pacithhip)
- Skako (Skakoan)
- Skor II (Squib)
- Skye (S'kytri)
- Sluis Van (Sluissi)
- Sluudren (Sludir)
- Sriluur (Weequay)
- Sullust (Sullustan)
- Sump (Nuknog)
- Tatooine (Jawa, Tusken Raider)
- Thakwaa (Thakwaash)
- Thisspias (Thisspiasian)
- Thosa (Draethos)
- Thyferra (Vratix)
- Tibrin (Ishi Tib)
- Tililix (Tarro)
- Tiss-sharl (Tiss-shar)
- Togoria (Togorian)
- Toola (Whiphid)
- Toong'L (Toong)
- Toydaria (Toydarian)
- Trandosha (Trandoshan)
- Trian (Trianii)
- Troiken (Xexto)
- Tund (Toong)
- Uba III (Ubese)
- Umbara (Umbaran)
- Urkupp (Dashade)
- Uvena Prime (Shistavanen)
- Varl (Hutt)
- Vinsoth (Chev, Chevin)
- Vodran (Vodran)
- Vortex (Vor)
- Vurdon Ka (Vuvrian)
- Wayland (Myneyrsh, Psadan)
- Woostri (Woostoid)
- Worxer (Spiner)
- Yablari (Anomid)
- Yag'Dhul (Givin)
- Yinchorr (Yinchorri)
- ZeHeth (Zehethbra)
- Zeltros (Zeltron)
- Zirulast (Temolak)
- Zolan (Clawdite)

Despite the back cover's inclusion of a species similar to Edcel Bar Gane (Roonan) within its collective alien depiction, the book itself lacks any specific information about this particular species.