Federation Members

The United Federation of Planets currently has four-hundred twenty-three member governments governing at least five-hundred thirty-seven planets (not including at least one-hundred Federation colonies) and at least three-hundred twenty sentient species and subspecies.
The following governments are part of the Federation, listed alphabetically, with governed planets, dominant species, dates of admission, general information, and locations on the map.
==Founding Members==
The founding members of the Federation in 2161 were the seven remaining members of the Coalition of Planets (formed in 2155) plus the Lunar Colonies in orbit of Earth.
Government 	Planets 	Species 	Admission	Notes 	Map Grid
Alpha Centauri Colonies 	Alpha Centauri III	Alpha Centauran	2161 	Preserver-seeded Human subspecies; Joined Coalition in late-2155 	1, 25
Alpha Centauri Colonies 	Centaurus 	Alpha Centauran	2161 	 	1, 25
Alpha Centauri Colonies 	Alpha Centauri V 	Alpha Centauran	2161 	 	1, 25
Alpha Centauri Colonies 	Al Rijil 	Alpha Centauran	2161 	 	1, 25
Alpha Centauri Colonies 	Perry 	Alpha Centauran	2161 	 	1, 25
Alpha Centauri Colonies 	Lane 	Alpha Centauran	2161 	 	1, 25
Alpha Centauri Colonies 	Kent 	Alpha Centauran	2161 	 	1, 25
Alpha Centauri Colonies 	Olson 	Alpha Centauran	2161 	 	1, 25
Andorian Empire 	Andoria 	AndorianAenar 	2161 	 	2, 26
Confederacy of Vulcan 	Vulcan 	Vulcan 	2161 	Destroyed in 2258 	1, 27
Confederacy of Vulcan 	New Vulcan 	Vulcan 	2258 	Admitted by unanimous vote of the Federation Council as Vulcan's replacement	1, 33
Denobula Triaxa 	Denobula 	Denobulan 	2161 	Joined Coalition in 2157 	-3, 25
Lunar Colonies 	Luna 	Human 	2161 	Former Earth colony 	1, 25(Sol)
United Earth 	Earth 	HumanCetacean 	2161 	 	1, 25(Sol)
United Earth 	Venus 	HumanCetacean 	2161 	 	1, 25(Sol)
United Earth 	Triton 	HumanCetacean 	2161 	 	1, 25(Sol)
United Earth 	Tethys 	HumanCetacean 	2161 	 	1, 25(Sol)
United Earth 	Pluto 	HumanCetacean 	2161 	 	1, 25(Sol)
United Earth 	Charon 	HumanCetacean 	2161 	 	1, 25(Sol)
United Earth 	Ixion 	HumanCetacean 	2161 	 	1, 25(Sol)
United Earth 	Eris 	HumanCetacean 	2161 	 	1, 25(Sol)
United Earth 	Makemake 	HumanCetacean 	2161 	 	1, 25(Sol)
United Earth 	Haumea 	HumanCetacean 	2161 	 	1, 25(Sol)
United Earth 	Sedna 	HumanCetacean 	2161 	 	1, 25(Sol)
United Earth 	Orcus 	HumanCetacean 	2161 	 	1, 25(Sol)
United Earth 	Quaoar 	HumanCetacean 	2161 	 	1, 25(Sol)
United Earth 	Varuna 	HumanCetacean 	2161 	 	1, 25(Sol)
United Earth 	Chaos 	HumanCetacean 	2161 	 	1, 25(Sol)
United Planets of Tellar	Tellar 	Tellarite 	2161 	 	-2, 25
==Other Members==
===A===
Government 	Planets 	Species 	Admission	Notes 	Map Grid
 	Aaamazzara 	Aaamazzarite 	2236 	 	8,27
 	Abraxas IX 	Rihannsu 	2335 	Former world of the Rihannsu Star Empire 	7, 20
 	Acamar III 	Acamarian 	2357 	Destroyed by the Borg in 2380 	8, 28
 	Actrium 	Aatrite 	2388 	Former world of the Cardassian Union 	-12, 31
 	Adelphous IV 	 	2298 	Destroyed by the Borg in 2380 	4, 28
 	Adhara 	Adharan 	2214 	 	5, 26
 	Agurtha 	Agurthan 	2335 	Former world of the Rihannsu Star Empire 	12, 21
 	Aihai 	Rihannsu 	2335 	Former world of the Rihannsu Star Empire 	6, 22
 	Ainleth 	Ainletstian 	2335 	Former world of the Rihannsu Star Empire 	7, 21
 	Ajilon Prime 	Various 	2323 	Former Federation colony, established in 2290 	19, 35
 	Akaal 	Akaali 	2231 	 	2, 20
 	Al'heron 	Rihannsu 	2335 	Former world of the Rihannsu Star Empire 	11, 23
 	Alaj 	Alajian 	2351 	 	-3, 15
 	Aldebaran III 	 	2216 	 	1, 32
 	Alesia Prime 	 	2341 	 	-3, 46
 	Algeron III 	Rihannsu 	2310 	Former colony of the Rihannsu Star Empire, established in 2275, separated from RSE in 2308	7, 25
 	Alonis 	Alonis 	2336 	 	-6, 18
 	Alpha III 	Human 	2163 	Former Earth colony 	-2, 26
 	Alpha V 	Human 	2275 	Former Earth colony 	-2, 26
 	Alpha Hydros V 	Hydrosian 	2222 	 	-4, 22
 	Alpha Proxima II 	Human 	2213 	 	-1, 22
 	Altair 	Palkeo Est 	2211 	 	-3, 24
 	Althos IV 	Bzzit Khaht 	2279 	 	16, 31
 	Amber 	Alpha Centauran	2195 	Former colony of Alpha Centauri 	1, 25
 	Ana'siuol 	Ana'siuolo 	2220 	 	-2, 36
 	Andros III 	Androsian 	2217 	 	-4, 21
 	Angosia 	Angosian 	2368 	 	19, 26
Antares Corona Worlds	Antares(Antares II)	Antaran 	2240 	 	-4, 14
Antares Corona Worlds	Antares III 	Antaran 	2240 	 	-4, 14
Antares Corona Worlds	Antares IV 	Antaran 	2240 	 	-4, 14
Antares Corona Worlds	Beta Antares II 	Antaran 	2240 	 	-4, 14
Antares Corona Worlds	Beta Antares III 	Antaran 	2240 	 	-4, 14
Antares Corona Worlds	Beta Antares IV 	Antaran 	2240 	 	-4, 14
Antares Corona Worlds	Beta Antares V 	Antaran 	2240 	 	-4, 14
 	Antede III 	Antedean 	2362 	 	12, 19
 	Antica 	Antican 	2361 	 	18, 31
 	Antos IV 	Antosian 	2196 	 	-3, 23
 	Arawath 	Arawathi 	2388 	Former world of the Cardassian Union 	-14, 29
 	Arbaza 	Arbazan 	2211 	 	-4, 20
 	Arcadia 	Arcadian 	2286 	 	1, 44
 	Arcanis IV 	Klingon 	2288 	Ceded to Federation by Klingon Empire in 2251 	16, 33
 	Archer IV 	Various 	2268 	Former Federation colony, established in 2200 	13, 30
 	Arcturus IV 	Arcturan 	2260 	 	-1, 24
Plutocracy of Ardana 	Ardana 	Ardanan 	2263 	 	-6, 35
 	Argaya 	Various 	2382 	Former Federation colony, established in 2341 	15, 31
 	Argelius II 	Argelian 	2233 	Preserver-seeded Human subspecies 	6, 28
 	Argo 	Aquan 	2275 	 	-4, 40
 	Ariannus 	Ariannan 	2265 	 	-1, 18
 	Arkaria 	Arkarian 	2303 	 	-6, 37
 	Arken II 	Arkenite 	2194 	 	-2, 25
 	Aronnia 	Aronnian 	2253 	 	-4, 33
 	Artaeirh 	Rihannsu 	2276 	Former colony of the Rihannsu Star Empire, established in 2034, separated from RSE in 2271	4, 20
 	Arteline IV 	 	2362 	 	-13, 38
 	Arvada III 	Various 	2347 	Former Federation colony, established in 2288 	9, 19
 	Ataj 	 	2357 	 	-3, 35
 	Atrea IV 	Atrean 	2368 	 	-6, 14
 	Aulac 	Aulacri 	2239 	 	-3, 32
 	Aurelia 	Aurelian 	2248 	 	2, 22
 	Avalon 	Human 	2210 	Former Earth colony, established in 2075 	-1, 27
 	Axanar 	Axanarri 	2200 	 	-1, 26
===B===
Government 	Planets 	Species 	Admission	Notes
 	B'hal Ta 	Bajoran 	2363 	Former colony of Bajor, established in 2180
 	Ba'ku 	Ba'ku 	2378 	
Republic of Bajor	Bajor 	Bajoran 	2358 	
Republic of Bajor	Dreon 	Bajoran 	2358 	Established in 2362
Republic of Bajor	Hanolan 	Bajoran 	2358 	Established in 2364
 	Barisa Prime 	Various 	2371 	Former Federation Colony, established in 2310
 	Barolia 	Barolian 	2312 	Destroyed by the Borg in 2380
 	Barzan II 	Barzan 	2371 	
 	Belle Terre 	Various 	2337 	Former Federation colony, established 2281
 	Benecia 	Various 	2278 	Former Federation colony, established in 2199
 	Benzar 	Benzite 	2369 	
 	Berellia 	Berellian 	2350 	
 	Berengaria 	Human 	2204 	Former Earth colony
 	Besmet 	Bezmeti 	2335 	Former world of the Rihannsu Star Empire
 	Beta III 	Betan 	2269 	
 	Beta VI 	Various 	2309 	Former Federation colony, established in 2270
 	Beta Agni II 	Various 	2370 	Former Federation colony, established in 2314
Beta Ophiuchi 	Errigal 	Various 	2374 	Former Federation colony, established in 2296
 	Betazed 	Betazoid 	2273 	
 	Betelgeuse II	Betelgesian	2230 	
 	Bilana 	Bilanan 	2365 	
 	Binderia 	Binderian 	2310 	
 	Blue Horizon 	Various 	2368 	Former Federation colony, established in 2259
 	Bolarus 	Bolian 	2202 	
Boradis System 	Boradis III 	Various 	2378 	Former Federation colony system, established in 2284
Boradis System 	Boradis IIIa 	Various 	2378 	
Boradis System 	Boradis IV 	Various 	2378 	
Boradis System 	Boradis VI 	Various 	2378 	
 	Bre'el IV 	Bre'ella 	2360 	
 	Briir 	Briir 	2384 	
 	Brikar 	Brikarian 	2351 	
 	Buran 	Burani 	2338 	
 	Bynaus 	Bynar 	2366 	
 	Bythis 	Thib 	2376 	
===C===
Government 	Planets 	Species 	Admission	Notes
 	Cairn 	Cairn 	2370 	
 	Cait 	Caitian 	2270 	
 	Caldos II 	Various 	2274 	Former Federation colony, established in 2189
 	Candelar IV 	Candelaran 	2349 	
Canopus System 	Canopus II 	Canopian 	2215 	
Canopus System 	Canopus III 	Canopian 	2215 	
Canopus System 	Canopus V 	Canopian 	2215 	
Ten Tribes of Capella 	Capella IV 	Capellan 	2292 	Preserver-seeded Human subspecies
Cardassian Republic 	Cardassia Prime	Cardassian 	2388 	Former capital of the Cardassian Union
Cardassian Republic 	Amleth 	Cardassian 	2388 	
Cardassian Republic 	Aschelon 	Cardassian 	2388 	
Cardassian Republic 	Chin'Toka 	Cardassian 	2388 	
Cardassian Republic 	Dopa 	Cardassian 	2388 	
Cardassian Republic 	Juhraya 	Cardassian 	2388 	
Cardassian Republic 	Kora 	Cardassian 	2388 	
Cardassian Republic 	Korvale 	Cardassian 	2388 	
Cardassian Republic 	Loval 	Cardassian 	2388 	
Cardassian Republic 	Monac 	Cardassian 	2388 	
Cardassian Republic 	Rakal 	Cardassian 	2388 	
Cardassian Republic 	Rondac 	Cardassian 	2388 	
Cardassian Republic 	Torros 	Cardassian 	2388 	
Cardassian Republic 	Trelka 	Cardassian 	2388 	
Cardassian Republic 	Vanden 	Cardassian 	2388 	
Cardassian Republic 	Volnar 	Cardassian 	2388 	
 	Casmus III 	Various 	2301 	Former Federation colony, established in 2234
 	Casperia Prime 	 	2198 	
 	Catulla 	Catullan 	2185 	
 	Celes II 	Celesian 	2335 	Former world of the Rihannsu Star Empire; Destroyed by the Borg in 2380
 	Celtris 	Celinite 	2388 	Former world of the Cardassian Union
 	Cerberus 	Various 	2260 	Former Federation colony, established in 2161
 	Cestus III 	 	2310 	Former Federation colony, established in 2267
 	ch'Havran 	RihannsuReman	2336 	Sister planet of ch'Rihan; former world of the Rihannsu Star Empire
 	ch'Revellion 	Rihannsu 	2335 	Former world of the Rihannsu Star Empire
Rihanna Imperial Seat 	ch'Rihan 	Rihannsu 	2335 	Former capital of the Rihannsu Star Empire
Rihanna Imperial Seat 	Carraya IV 	Rihannsu 	2335 	
Rihanna Imperial Seat 	ch'Danutha 	Rihannsu 	2335 	
Rihanna Imperial Seat 	ch'Nedge 	Rihannsu 	2335 	
Rihanna Imperial Seat 	ch'Shrr 	Rihannsu 	2335 	
Rihanna Imperial Seat 	ch'Tatori 	Rihannsu 	2335 	
Rihanna Imperial Seat 	Drakken 	Rihannsu 	2335 	
Rihanna Imperial Seat 	Gotanna 	Rihannsu 	2335 	
Rihanna Imperial Seat 	Ir'Rak 	Rihannsu 	2335 	
Rihanna Imperial Seat 	Romii 	Rihannsu 	2335 	
Rihanna Imperial Seat 	Taetor 	Rihannsu 	2335 	
Rihanna Imperial Seat 	Tigelis V 	Rihannsu 	2335 	
Rihanna Imperial Seat 	Zygrna III 	Rihannsu 	2335 	
 	ch'Vania 	Rihannsu 	2335 	Former world of the Rihannsu Star Empire
 	Chand Aad 	Chandir 	2373 	
 	Chetzia III 	Rihannsu 	2347 	Former Rihannsu colony, established in 2263
 	Choblav 	Choblik 	2371 	
 	Corvallis 	Various 	2345 	Former Federation colony, established in 2288
 	Cor Caroli IX 	Vulcan 	2253 	Former colony of Vulcan
 	Cort 	Boslic 	2337 	
 	Constanthus 	Constanthian 	2339 	Former world of the Rihannsu Star Empire
People's Republic of Coridan	Coridan 	Coridanite 	2267 	Founding member of Coalition of Planets; withdrew in 2155
 	Corva II 	Corvan 	2335 	Former world of the Rihannsu Star Empire
 	Cygnet XIV 	Cygnian 	2251 	
 	Cygnia Minor 	Various 	2284 	Former Federation colony, established in 2211
===D===
Government 	Planets 	Species 	Admission	Notes
 	Dalvos Prime 	 	 	
 	Damiano 	Damiani 	2341 	
 	Danula II 	Danulan 	2308 	Destroyed by the Borg in 2380
 	Dedderai 	Dedderac 	2202 	
 	Deian 	Deia 	 	
 	Delb II 	Delbian 	 	
 	Delkan IV 	Delk 	2335 	Former world of the Rihannsu Star Empire
 	Delnar 	Delian 	2335 	Former world of the Rihannsu Star Empire
Delos 	Brekka 	Brekkan 	2218 	
Delos 	Ornara 	Ornaran 	2218 	
Deltan Union 	Delta IV 	Deltan 	2223 	
 	Delta Pavonis III	Human 	2259 	Former Earth colony
 	Delta Sigma IV 	BaderDorset	2382 	
Commonwealth of Denebia	Deneb II 	 	2360 	
Commonwealth of Denebia	Deneb IV 	Bandi 	2360 	
Commonwealth of Denebia	Deneb V 	Denebian 	2360 	
Deneb Kaitos System 	Deneb Kaitos II 	Klaha!'hew 	2259 	
Deneb Kaitos System 	Deneb Kaitos III 	Eyren 	2259 	
Deneb Kaitos System 	Deneb Kaitos IV 	Deirr 	2259 	
Deneb Kaitos System 	Deneb Kaitos V 	Klaha 	2259 	
 	Deneva 	Human 	2296 	Former Earth colony; Destroyed by Borg in 2380
 	Devnar IV 	 	2295 	Destroyed by the Borg in 2380
 	Devoras 	Rihannsu 	2358 	Former Rihannsu colony, established in 2280
 	Dhieissae 	Rihannsu 	2335 	Former world of the Rihannsu Star Empire
 	Djana 	DjanaiInari	2270 	
 	Dramia 	Dramian 	 	
 	Draylax 	Draylaxian 	2240 	Joined Coalition of Planets in late-2155, left in 2160
 	Drovana 	Rihannsu 	2351 	Former Rihannsu colony, established in 2273
===E===
Government	Planets 	Species 	Admission	Notes
 	Edos 	Edosian 	2245 	
 	Eeiauo 	Eeiauoan 	2244 	Descendants of Sivaoan settlers
 	Efros 	Efrosian 	2262 	Destroyed by the Borg in 2380
 	Eihaunn 	Rihannsu 	2335 	Former world of the Rihannsu Star Empire
 	Ekos 	Ekosian 	2373 	
 	Elhieuue 	Rihannsu 	2335 	Former world of the Rihannsu Star Empire
 	Ellora 	Ellora 	2379 	Former Son'a subject world
 	Eloh 	Rihannsu 	2320 	Former colony of the Rihannsu Star Empire, established in 2248, separated from RSE in 2319
 	Ennar 	Ennar 	2335 	Former world of the Rihannsu Star Empire
Eris Alpha	Sarkassia	Sarkassian	2208 	
Eris Alpha	Ta'alaat 	Ta'alaat 	2208 	
 	Eseria 	Eseriat 	2307 	
 	Eska 	Eska 	2225 	
 	Evora 	Evoran 	2375 	
===F===
Government	Planets 	Species 	Admission	Notes
 	Farius 	Farian 	2381 	
 	Fazi 	FaziFazibion	2213 	
 	Felussus 	Felussian 	2335 	Former world of the Rihannsu Star Empire
 	Fendaus V 	Fendo 	 	
 	Fillandia 	Ariolo 	2264 	
 	Fountainhead	 	 	
 	Free Haven 	Bajoran 	2366 	Former colony of Bajor, established in 2329
===G===
Government	Planets 	Species 	Admission	Notes
 	Gaius 	Gian 	2335 	Former world of the Rihannsu Star Empire
 	Galathon 	Rihannsu 	2335 	Former world of the Rihannsu Star Empire
 	Gallika 	Galakhi 	2253 	
 	Gaspar VIII	Gasparilla 	2337 	
 	Gemworld 	AlpustaElaysianFrillsGendliiLipulYilltern	2350 	Artificial null-gravity planet
Genome 	Moab IV 	Human 	2370 	Former independent Earth colony established in 2168
 	Gideon 	Gideon 	2269 	
 	Gnala 	Gnalish 	2320 	
 	Gorwah 	Klingon 	2335 	Ceded from the Klingon Empire to Rihannsu Star Empire in 2279
 	Grazer 	Grazerite 	2305 	
 	Gullrey 	Rey 	2268 	
 	Gyndine 	 	2365 	
===H===
Government 	Planets 	Species 	Admission	Notes
 	Halii 	Haliian 	2351 	
 	Hamal IV 	Hamalki 	2230 	
 	Hasdrubel 	HasDrub 	2335 	Former world of the Rihannsu Star Empire
 	Havnau 	Rihannsu	2335 	Former world of the Rihannsu Star Empire
 	Hayace 	Rihannsu	2335 	Former world of the Rihannsu Star Empire
 	Heir'ocha 	Heir'och	2254 	Independent subspecies of the Heiren
 	Heir'tzan 	Heiren 	2253 	
 	Hekaras II	Hekaran 	2360 	
 	Hellaro 	Tetrys 	2335 	Former world of the Rihannsu Star Empire
Hermat Directorate	Hermat 	Hermat 	2340 	
 	Hlin'deuih	Rihannsu	2335 	Former world of the Rihannsu Star Empire
 	Huan 	Huanni 	2298 	
 	Hupyria 	Hupyrian	2387 	
 	Hurkos III	 	2332 	
===I===
Government 	Planets 	Species 	Admission	Notes
 	Igre 	Igresh 	2264 	
 	Illyria 	Illyrian	2215 	
 	Inferna Prime	Human 	2189 	Former Federation colony
Izar Colony	Izar 	Human 	2183 	Independent Earth colony
===J===
Government 	Planets 	Species 	Admission	Notes
 	Janus VI 	Horta 	2271 	
 	Jezere 	Rihannsu	2335 	Former world of the Rihannsu Star Empire
 	Jezero 	Jezeran 	2231 	
 	Jhillanieh 	Rihannsu	2335 	Former world of the Rihannsu Star Empire
Jovian Colonies	Ganymede 	Human 	2318 	Former Earth colony
Jovian Colonies	Callisto 	Human 	2318 	
Jovian Colonies	Europa 	Human 	2318 	
Jovian Colonies	Himalia 	Human 	2318 	
Jovian Colonies	Io 	Human 	2318 	
Judari Republic	Judaris 	Judari 	2382 	
Judari Republic	Vrobarris 	Judari 	2382 	
 	Justarus Paxar IV	Paxan 	2335 	Former world of the Rihannsu Star Empire
 	Jotunheim 	Various 	2241 	Former Federation colony, established in 2176
===K===
Government 	Planets 	Species 	Admission	Notes
 	K'Manatri 	Rihannsu 	2335 	Former world of the Rihannsu Star Empire
 	K'norm 	K'normian 	2249 	
K'Vin Hegemony 	Kirlos 	K'Vin 	2360 	Artificial world built by the Ariantu
 	Kachissat(Daran V)	Shesshran 	2237 	
 	Kaferia 	Kaferian 	2184 	
 	Kaldra IV 	Kaldran 	2369 	
 	Kandilkar 	Kandilkari	2329 	
 	Kantare 	Kantare 	2261 	
 	Karnes 	G'Karnan 	2369 	
 	Kashet 	Kasheeta 	2274 	
 	Kazar 	Kazarite 	2250 	
 	Kelrabi 	Kelrabi 	2388 	Former world of the Cardassian Union
 	Kerovi 	Kerovian 	2377 	
Kessik Colonies	Kessik III 	Various 	2379 	Former Federation colony system, established in 2304
Kessik Colonies	Kessik IV 	Various 	2379 	
 	Kethri 	Vulcan 	2169 	
 	Keto-Enol 	Enolian 	2218 	
 	Kevratas 	Kev 	2335 	Former world of the Rihannsu Star Empire
 	Khazara 	Rihannsu 	2358 	Former Rihannsu colony, established in 2222
 	Koa(Mu Arae) 	Koa 	2380 	
 	Kobheeria 	Kobheerian	2357 	
 	Koblis 	Kobliad 	2359 	
 	Koltaari 	Koltaari 	2333 	
 	Kotara Barath 	Kantare 	2263 	Former Kantare colony, established in 2170
 	Kreetassa 	Kreetassan	2190 	
 	Krios 	Kriosian 	2369 	
 	Kropasar 	Kropaslin 	2376 	
 	Krotar 	Krotaran 	2335 	Former world of the Rihannsu Star Empire
 	Ktar 	Ktarian 	2349 	
 	Kyr 	Kyr 	2335 	Former world of the Rihannsu Star Empire
===L===
Government	Planets 	Species 	Admission	Notes
 	L'Shrai 	Rihannsu 	2335 	Former world of the Rihannsu Star Empire
 	Lazon 	Lazonite 	2388 	Former world of the Cardassian Union
 	Legara IV 	Legaran 	2367 	
 	Lendrin 	Lendrin 	2364 	
 	Leughon 	Urghon 	2335 	Former world of the Rihannsu Star Empire
 	Lheia'lhoenn	Rihannsu 	2335 	Former world of the Rihannsu Star Empire
 	Lissepia 	Lissepian	2379 	
 	Lorillia 	Lorillian	2317 	Destroyed by the Borg in 2380
 	Lothyr 	Lek'twi 	2340 	
 	Lrru-Ir 	Irriol 	2361 	
 	Lyshan 	Various 	2383 	Former Federation colony, established in 2331
 	Lythos Prime	Horta 	2294 	Former Horta colony, established in 2269
===M===
Government 	Planets 	Species 	Admission	Notes
NeoRoman Empire 	Magna Roma	Magna Roman 	2272 	Preserver-seeded Human descendants
 	Mahalast 	Mahal 	2335 	Former world of the Rihannsu Star Empire
 	Makkus 	Makkusian 	2360 	
 	Maluria 	Malurian 	2287 	
 	Man'ari 	EredarNaruu 	2388 	
 	Marcos XII	Various 	2270 	Former Federation colony, established in 2197
 	Mariposa 	Human 	2369 	Originally independent Human colony
Martian Colonies 	Mars 	Human 	2166 	Gained independence from United Earth in 2149
Martian Colonies 	Ceres 	Human 	2166 	
Martian Colonies 	Pallas 	Human 	2166 	
Martian Colonies 	Vestia 	Human 	2166 	
Martian Colonies 	Hygiea 	Human 	2166 	
 	Maxus 	Maxillian 	2348 	Former world of the Rihannsu Star Empire
 	Mazar 	Mazarite 	2322 	Destroyed by the Borg in 2380
 	Medusa 	Medusan 	2252 	
 	Megara 	Megarite 	2262 	
 	Melkot 	Melkotian 	2271 	
Commonwealth of Menk and Valakis	Menk 	MenkValakian	2236 	
 	Merak II 	Merakan 	2211 	Vulcan subspecies
 	Mestiko 	Payav 	2294 	
 	Mevet 	Vulcan 	2186 	
 	Midos V 	Various 	2300 	Former Federation colony, established in 2208
 	Mizar II 	Mizaran 	2280 	
 	Monchezke 	Monchezke 	2231 	
 	Mortemonde	Mortemondean	2377 	
===N===
Government 	Planets 	Species 	Admission	Notes
 	Nador 	Nadorian 	2267 	
 	Napea 	Napean 	2334 	
 	Nasat 	NasatCitoac	2284 	
 	Nasser 	Nassiri 	2382 	
 	Nelatia 	Nelati 	2378 	
 	Nequencia 	Rihannsu 	2361 	Former Rihannsu colony, established in 2284; Destroyed by the Borg in 2380
 	New Australia	Various 	2386 	Former Federation colony, established in 2311
 	New Cairo 	Various 	2358 	Former Federation colony, established in 2282
 	New Halana 	Various 	2347 	Former Federation colony, established in 2272
 	New Hampton 	Various 	2283 	Former Federation colony, established in 2209
 	New Gaul 	Various 	2377 	Former Federation colony, established in 2300
 	New Manhattan	Various 	2356 	Former Federation colony, established in 2280
 	New Paris 	Various 	2286 	Former Federation colony, established in 2210
 	New Texas 	Human 	2345 	Former Earth colony
Neyel Hegemony	Holy Vangar 	Neyel 	2384 	Genetically-engineered Human subspecies
 	Nova Empyrea 	Empyrean 	2211 	Former independent Earth colony; Augmented Human subspecies
===O===
Government 	Planets 	Species 	Admission	Notes
Olympian Confederation	Zeus 	Human 	2386 	Independent Human colonies
Olympian Confederation	Aphrodite 	Human 	2386 	
Olympian Confederation	Apollo 	Human 	2386 	
Olympian Confederation	Ares 	Human 	2386 	
Olympian Confederation	Artemis 	Human 	2386 	
Olympian Confederation	Athena 	Human 	2386 	
Olympian Confederation	Demeter 	Human 	2386 	
Olympian Confederation	Hephaestus	Human 	2386 	
Olympian Confederation	Hera 	Human 	2386 	
Olympian Confederation	Hermes 	Human 	2386 	
Olympian Confederation	Hestia 	Human 	2386 	
Olympian Confederation	Poseidon 	Human 	2386 	
 	Omelda 	Omion 	2388 	Former world of the Cardassian Union
 	Ona 	Ontailian	2369 	
 	Oran'taku 	Oran'taku	2197 	
 	Orias 	Orite 	2388 	Former world of the Cardassian Union
 	Oriki 	Oriki 	2317 	
 	Orinwen 	Orinilla 	2335 	Former world of the Rihannsu Star Empire
Orion Colonies 	Botchok 	Orion 	2202 	
Orion Colonies 	Kolar 	Orion 	2202 	
 	Orodanga 	Ithenite 	2246 	
 	Osadj 	Osadjani 	2193 	
 	Ossec 	Rihannsu 	2368 	Former Rihannsu colony, established in 2258
===P===
Government 	Planets 	Species 	Admission	Notes
 	P'Jem 	Vulcan 	2174 	
 	Pacifica 	Selkie 	2358 	
 	Padak 	Rihannsu 	2335 	Former world of the Rihannsu Star Empire
 	Pahkwal 	Pahkwa-thanh 	2360 	
 	Pak'shreea 	Pak'shree 	2378 	
Pallas System 	Alondra 	Various 	2274 	Former Federation colony system, established in 2195
Pallas System 	Mantilles 	Various 	2274 	
 	Pandril 	Pandrilite 	2287 	Destroyed by the Borg in 2380
 	Pandro 	Pandronian 	2274 	
 	Pangea 	Human 	2380 	Former Earth colony
 	Panora 	Panoran 	2388 	Former world of the Cardassian Union
Paraagan Matriarchy	Paraagan II 	Paraagan 	2195 	
Paraagan Matriarchy	Paraagan III 	Paraagan 	2195 	
Paraagan Matriarchy	Paraagan IV 	Paraagan 	2195 	
Paragon colony 	Sycorax 	Augmented Human	2277 	Independent Earth colony
 	Paxar 	Paxan 	2322 	Former world of the Rihannsu Star Empire
 	Peliar Zel II 	Peliar 	2355 	
 	Penzatti 	Penzatti 	2362 	Ecosystem badly damaged by Borg attack in 2367
 	Phylos II 	Phylosian 	2249 	
 	Pollar 	Pollara 	2335 	Former world of the Rihannsu Star Empire
Psi Upsilon 	Psi Upsilon III	 	2341 	
Psi Upsilon 	Psi Upsilon IV 	 	2341 	
===Q===
Government	Planets 	Species 	Admission	Notes
 	Q 	Various 	2287 	Former Federation colony, established in 2189
 	Qualor 	Zakdorn 	2368 	Former colony of Zakdorn, established in 2165
 	Quatel 	Quat 	2335 	Former world of the Rihannsu Star Empire
 	Quentin 	Rihannsu	2335 	Former world of the Rihannsu Star Empire
 	Quirinus	 	2341 	
===R===
Government 	Planets 	Species 	Admission	Notes
 	Raeya III 	Raeyan 	2388 	
 	Raeya IV 	Ven-Raeyan 	2388 	Raeyan subspecies
 	Raknal V 	CardassianKlingon	2388 	Former world of the Cardassian Union; Cardassian/Klingon joint colony established in 2328; fully ceded to Cardassian Union in 2346
 	Ramatis 	Ramatian 	2316 	Destroyed by the Borg in 2380
 	Redansk 	Redansk 	2335 	Former world of the Rihannsu Star Empire
 	Relhinder 	Inder 	2335 	Former world of the Rihannsu Star Empire
Reman Ascendancy 	Galvanis 	Reman 	2388 	Established by Treaty of Galvanis between Federation and Klingon Empire; Mainly populated by Remans resettled from ch'Havran
Reman Ascendancy 	Klorgat 	Reman 	2388 	
 	Remonda 	Mon Remondan 	2371 	
 	Reqqunuar 	Nuarreq 	2354 	
 	Revivalen 	Rihannsu 	2335 	Former world of the Rihannsu Star Empire
 	Rhaandarel	Rhaandarite 	2301 	Destroyed by the Borg in 2380
 	Rian 	Rihannsu 	2335 	Former world of the Rihannsu Star Empire
United Rigel Worlds and Colonies	Rigel II 	 	2164 	First worlds with non-Coalition species to join the Federation
United Rigel Worlds and Colonies	Rigel III 	Chelon 	2164 	
United Rigel Worlds and Colonies	Rigel IV 	ZamiJelna 	2164 	
United Rigel Worlds and Colonies	Rigel V 	Rigelian 	2164 	
United Rigel Worlds and Colonies	Rigel VI 	Boda 	2164 	
United Rigel Worlds and Colonies	Rigel VII 	RigellianKaylar 	2164 	
United Rigel Worlds and Colonies	Rigel VIII	 	2164 	
United Rigel Worlds and Colonies	Rigel X 	 	2164 	
Risan Hedony 	Risa 	Risan 	2249 	Destroyed by the Borg in 2380
 	Ronara 	Ronaran 	2388 	Panoran subspecies; Former world of the Cardassian Union
 	Rua 	Clan Ru 	2269 	Preserver-seeded dinosauroid species originally from Earth
===S===
Government 	Planets 	Species 	Admission	Notes
 	S'ti'ach'aas 	S'ti'aach 	2380 	
 	Sa'na'mdeihein 	Na'mdeihei 	2379 	
 	Salieh 	Rihannsu 	2335 	Former world of the Rihannsu Star Empire
 	Samnar 	Samnar 	2360 	Former world of the Rihannsu Star Empire
 	Sar'Kell 	Rihannsu 	2335 	Former world of the Rihannsu Star Empire
Saturnian Confederation	Titan 	Human 	2310 	Former Earth colonies
Saturnian Confederation	Rhea 	Human 	2310 	
Saturnian Confederation	Iapetus 	Human 	2310 	
Saturnian Confederation	Enceladus 	Human 	2310 	
Saturnian Confederation	Dione 	Human 	2310 	
Saturnian Confederation	Phoebe 	Human 	2310 	
Saturnian Confederation	Mimas 	Human 	2310 	
Saturnian Confederation	Titania 	Human 	2310 	
Saturnian Confederation	Oberon 	Human 	2310 	
 	Sauria 	Saurian 	2235 	
 	Selay 	Selay 	2361 	
 	Selene 	Selenean 	2368 	
 	Setlik III 	Various 	2372 	Former Federation colony, established in 2296
 	Shamin 	Shamin 	2252 	
 	Sherman's Planet	HumanKlingon	2294 	Originally Federation/Klingon joint colony, established in 2264; Destroyed by the Borg in 2380
 	Sigma Iotia II 	Iotian 	2239 	
 	Sirius IX 	 	 	
 	Sivao 	Sivaoan 	2270 	
 	Skorr 	Skorr 	2222 	
Kingdom of Solta 	Essolitis 	Soltini 	2368 	
 	Soukara 	Teliskan 	2388 	Former world of the Cardassian Union
 	Ssan 	Ssan 	2271 	
 	Sudeka III 	Sudekan 	2335 	Former world of the Rihannsu Star Empire
 	Sulamid 	Sulamid 	2308 	
 	Suliban 	Suliban 	2251 	
 	Syrinx 	Andorian 	2167 	
===T===
Government 	Planets 	Species 	Admission	Notes
 	T'Khut 	Vulcan 	2165 	
 	T'Mes 	Rihannsu 	2336 	Former Rihannsu colony, established in 2261
 	Ta'Trosha IV	 	2362 	
 	Tagra IV 	Tagran 	2363 	
 	Taish 	Tash 	2335 	Former world of the Rihannsu Star Empire
 	Takaralaai 	Rihannsu 	2335 	Former world of the Rihannsu Star Empire
 	Talin IV 	Talin 	2271 	
 	Talvas 	 	 	
Children of Tama 	Tama 	Tamarian 	2374 	
 	Tandar 	Tandaran 	2242 	
 	Tared 	Rihannsu 	2335 	Former world of the Rihannsu Star Empire
 	Tarlac 	Tarlac 	2379 	Former Son'a subject world; Destroyed by the Borg in 2380
 	Tarus 	Tarron 	2335 	Former world of the Rihannsu Star Empire
 	Tegedaar 	Tegedaar 	2335 	Former world of the Rihannsu Star Empire
Tellun 	Elas 	Elasian 	2275 	
Tellun 	Troyius 	Troyian 	2275 	
 	Tenara 	Tenaran 	2366 	
 	Tendara 	Various 	2378 	Former Federation colony, established in 2307
 	Tenjin V 	Tenjin 	2341 	
 	Terix II 	Rihannsu 	2346 	Former Rihannsu colony, established in 2275
Terra Nova Colony	Terra Nova 	Novan 	2178 	Independent Earth colony, Human subspecies
 	Terrhiemm 	Rihannsu 	2335 	Former world of the Rihannsu Star Empire
 	Tessen III 	Tessenite 	2360 	
 	Teutil 	Teutil 	2335 	Former world of the Rihannsu Star Empire
 	Thieurrull 	Tirrull 	2335 	Former world of the Rihannsu Star Empire
 	Thobawui 	Bothini 	2359 	
 	Thymera 	Thymerae 	2376 	
 	Tiburon 	Tiburonian 	2190 	
 	Tomed 	Rihannsu 	2336 	Former Rihannsu colony, established in 2256
 	Toraenn 	Rihannsu 	2335 	Former world of the Rihannsu Star Empire
 	Torrek 	Rihannsu 	2335 	Former world of the Rihannsu Star Empire
Triexian Curia 	Triex 	Triexian 	2319 	
Trill Sybiosis 	Trill 	TrillSymbiont	2229 	
 	Triskelion 	Various 	2298 	Mixed race humanoid world, descendants of former slaves
 	Tyrellia 	Tyrellian 	2323 	
 	Tyrus 	Tyran 	2213 	
===U===
Government 	Planets 	Species 	Admission	Notes
 	Ullia 	Ullian 	2357 	
Unefra 	 	Uulnis 	2388 	Former world of the Cardassian Union
 	Unroth III	Rihannsu	2341 	Former Rihannsu colony, established in 2278
Uranian Colonies	Ariel 	Human 	2323 	Former Earth colonies
Uranian Colonies	Miranda 	Human 	2323 	
Uranian Colonies	Umbriel 	Human 	2323 	
 	Utopia 	Human 	2388 	Independent isolated colony founded by Human refugees of the Third World War
===V===
Government	Planets 	Species 	Admission	Notes
 	V'Ranthi 	Rihannsu	2335 	Former world of the Rihannsu Star Empire
 	Vair 	 	2370 	
 	Val'Karku 	Rihannsu	2335 	Former world of the Rihannsu Star Empire
 	Valt Minor	Valtese 	2370 	
 	Valzhan 	Valzhan 	2268 	
 	Vega IX 	Human 	2164 	Former Earth colony
 	Velora 	Rihannsu	2335 	Former world of the Rihannsu Star Empire
 	Vemla 	Vemlan 	2340 	
 	Ver'ta 	Verpine 	2381 	
 	Ver'Kush 	 	2384 	
 	Verdanis 	 	2370 	
 	Vestios 	Vestian 	2310 	
 	Vico V 	 	 	
 	Vissia 	Vissian 	2213 	
 	Vobilin 	Vobilite	2194 	
 	Volon 	Volin 	2388 	Former world of the Cardassian Union
 	Vorgon 	Vorgon 	2359 	
===W===
Government	Planets	Species 	Admission	Notes
 	Weytahn	Andorian	2248 	Former colony of Andoria; Destroyed by the Borg in 2380
===X===
Government 	Planets 	Species 	Admission	Notes
 	Xanthas 	Xanthan 	2204 	
Xanthe Conglomerate	Xanthe 	Xanthe 	2373 	
 	Xantoras 	Xantoran 	2215 	
 	Xarantine 	Xarantine 	2290 	Destroyed by the Borg in 2380
 	Xelata 	Xelatian 	2265 	
Xenexian Republic 	Xenex 	Xenexian 	2365 	
Xenexian Republic 	Danter 	Danteri 	2365 	
Xindi Coalition 	New Xindus 	Xindi-PrimateXindi-InsectoidXindi-Reptillian	2314 	
Xindi Coalition 	Aqua Xindus	Xindi-Aquatic 	2314 	
Xindi Coalition 	Arbolis 	Xindi-Arboreal 	2314 	
===Y===
Government 	Planets 	Species	Admission	Notes
 	Yatil 	Yati 	2335 	Former world of the Rihannsu Star Empire
Republic of Yonada	New Fabrina	Fabrini	2285 	
 	Yridia 	Yridian	2340 	Destroyed by the Borg in 2380
 	Ysail 	Ysian 	2335 	Former world of the Rihannsu Star Empire
===Z===
Government	Planets 	Species 	Admission	Notes
 	Zakdorn 	Zakdorn 	2344 	
 	Zalda 	Zaldan 	2280 	
 	Zaran II	Zaranite	2259 	
 	Zeos 	Zeosian 	2280 	
===Others===
The following governments have either applied for membership to the Federation and are awaiting approval by the Federation Council, are Protectorates of the Federation, or are former members.
Government	Planets 	Species 	Admission	Notes
 	Selelvia	Selelvian	2371 	Expelled by the Federation Council in 2376 for telepathically manipulating that body; Currently under Starfleet quarantine.
==Federation Colonies==
The following is a partial list of Federation colonies (rather than colonies of specific member worlds, which are listed above under their controlling worlds or governments). These planets are without voting rights on the Federation Council, but are entitled to send a delegate. Many colonies are eventually admitted as full members of the Federation.
Colony 	Establishment	Notes
'audet IX 	2278 	
Alaya II 	2376 	
Alpha Proxima IV 	2209 	
Alpha Zion 	2306 	
Athos 	2352 	
Babel 	2161 	
Bardex III 	2294 	
Barradas III 	2341 	
Baten Kaitos 	2348 	
Bejarus III 	2315 	
Beta Exorpa 	2358 	
Beta Hydros IV 	2374 	
Beta Nirobi II 	2368 	
Beta Virginis V 	2170 	
Calder II 	2258 	
Campor III 	2371 	
Claren III 	2358 	
Coltar IV 	2359 	
Delta Rana IV 	2350 	Destroyed by the Husnock in 2366
Doraf I 	2364 	
Dorvan V 	2350 	
Dulisian IV 	2279 	
Elysius III 	2377 	
Fellelbia 	2381 	
Galen IV 	2346 	
Galorndon Core 	2361 	
Gault 	2341 	
Gemus IV 	2349 	
Holt 	2265 	
Iadera 	2365 	
Idran 	2373 	First colony in the Gamma Quadrant
Iota Horologii IV	2274 	
Ivor Prime 	2364 	Destroyed by the Borg in 2373
Jouret IV 	2361 	Destroyed by the Borg in 2366
Kirisha 	2355 	
Korat 	2350 	
Korvat 	2371 	Destroyed by the Borg in 2380
Lemma II 	2317 	
Loran II 	2323 	
Manzar 	2375 	
Melona 	2368 	
Memory Alpha 	2199 	
Minos Korva 	2360 	
Mosanalea 	2358 	
MS 1 	2366 	
Nahmi IV 	2384 	
Nehru 	2367 	
Neu-Stuttgart 	2317 	
New France 	2368 	
Norkan 	2337 	
Norpin 	2282 	
Omicron Ceti III 	2264 	Abandoned in 2267
Omicron Theta 	2294 	Destroyed in 2336 by the Crystalline Entinty
Ophiucus III 	2260 	
Penthara IV 	2267 	
Prantares IV 	2280 	
Pree' 	2377 	
Quadra Sigma III 	2363 	
Regulus II 	2344 	Destroyed by the Borg in 2380
Regulus III 	2338 	
Regulus V 	2363 	Destroyed by the Borg in 2380
Relva VII 	2355 	
Saltok IV 	2355 	
Sirius IV 	2208 	
Solarion IV 	2364 	
Spica IX 	2366 	
Stelenaris 	2372 	
Tarchannen III 	2357 	Colony vanished in 2362
Tantalus V 	2255 	
Taranko 	2368 	
Tarod IX 	2155 	Destroyed by the Borg in 2364
Tarsus IV 	2228 	
Teneebia 	2363 	
Turkana IV 	2318 	Declared a failed colony in 2334; Destroyed by the Borg in 2380
Umith VII 	2377 	
Umith VIII 	2385 	
Zadar IV 	2364 	
==Sources==
*Federation Members @ Memory Alpha
*Federation Members @ Memory Beta
Category:United Federation of Planets
Category:Federation Members