Federation Members

• Members of the Federation
  • Listed in order of joining
  • List does not include Federation protectorates

Members

1. United Earth
   • 1st member
   • Joined: August 12, 2161
2. Confederacy of Vulcan
   • 2nd member
   • Joined: August 12, 2161
3. Andorian Empire
   • 3rd member
   • Joined: August 12, 2161
   • Withdrew: 2382
   • Rejoined: 2385
4. United Planets of Tellar
   • 4th member
   • Joined: August 12, 2161
5. Alpha Centauri Concordium
   • 5th member
   • Joined: August 12, 2161
6. Confederated Martian Colonies
   • 6th member (ENT Novel: A Choice of Futures)
   • Joined: 2162 (ENT Novel: A Choice of Futures)
7. Vega Colony
   • 7th member (ENT Novel: Tower of Babel)
   • Joined: 2164 (ENT Novel: Tower of Babel)
   • Former United Earth colony
8. United Worlds and Colonies of Rigel
   • 8th member (ENT Novel: Tower of Babel)
   • Joined: 2164 (ENT Novel: Tower of Babel)
9. Arken II
   • 9th member (ENT Novel: Uncertain Logic)
   • Joined: Early 2165 (ENT Novel: Uncertain Logic)
   • Former Andorian Empire subject world
10. Ithen
    • 10th member (ENT Novel: Patterns of Interference)
    • Joined: October 2165 (ENT Novel: Patterns of Interference)
11. Risian Hedony
    • Joined: late 22nd Century
12. Camor V
    • Joined: By 2200s (TNG Novel: Genesis Wave, Part I)
13. Deltan Union
    • Joined: By 2200s (TNG Novel: Genesis Wave, Part I)
14. Trillius Prime
    • Joined: By 2230s (Novel: Articles of the Federation)
15. Argelius
    • Joined: 2240s/2250s (TOS Novel: Burning Dreams)
16. Vobilin
    • Joined: By 2245 (DS9 Short Story: "Old Souls")
17. Arixus
    • Joined: By 2248 (DIS Novel: The Way to the Stars)
18. Bolias
    • Joined: By 2248 (DIS Novel: The Way to the Stars)
19. Elisurian homeworld
    • Joined: By 2248 (DIS Novel: The Way to the Stars)
20. Ri'tis
    • Joined: By 2248 (DIS Novel: The Way to the Stars)
21. Valzhan
    • Joined: By mid-23rd Century
22. Axanar
    • Joined: After 2251, by 2260s
23. Regulus
    • Joined: By 2254 (TOS: "The Cage")
24. Makus III
    • Joined: By 2262 (TOS Novel: The Captain's Oath)
25. Alpha Proxima II
    • Joined: By 2260s
    • Former United Earth colony
26. Altair Colony
    • Joined: By 2260s
    • Former United Earth colony
27. Arcturus
    • Joined: By 2260s
28. Aurelia
    • Joined: By 2260s
29. Cygnet XIV
    • Joined: By 2260s (TOS Novel: The Captain's Oath)
30. Denobula
    • Joined: By 2260s
31. Izar
    • Joined: By 2260s
    • Former United Earth colony
32. Plutocracy of Ardana
    • Joined: By 2260s
    • Withdrew: 2269
    • Rejoined: By 2370s
33. Ramatis III
    • Joined: By 2260s
34. Regulus (distant)
    • Joined: By 2260s (DIS Novel: Distant Measures)
35. Sauria
    • Joined: By 2260s
36. Scoridia
    • Joined: By 2260s
37. Sulamid
    • Joined: By 2260s
38. Terra Nova
    • Joined: By 2260s
39. Tiburon
    • Joined: By 2260s
40. Aulac
    • Joined: Mid-2260s (TOS Novel: The Captain's Oath)
41. People's Republic of Coridan
    • Joined: 2267 (TOS: "Journey to Babel")
42. Janus VI
    • Joined: After 2267
43. Cait
    • Joined: By 2269
    • Irregular participation
44. Aaamazzara
    • Joined: By 2270s
45. Betelgeusian Argosies
    • Joined: By 2270s
46. Kazar
    • Joined: By 2270s
47. Rhaandarel
    • Joined: By 2270s
48. Zaranai
    • Joined: By 2270s
49. Lorina
    • Joined: After 2273 (TOS Novel: Ex Machina)
50. Delta Sigma IV
    • Joined: 2278 (TNG Novel: A Time to Love)
51. Efros
    • Joined: By 2280s
52. Kashet
    • Joined: By 2280s
53. Kyppr
    • Joined: By 2280s (VOY Novel: Acts of Contrition)
54. Pacifica
    • Joined: By 2280s (implicit by TNG Novel: Genesis Wave, Part I)
55. Huan
    • Joined: 2293
56. Betazed
    • Joined: By 2300s (TLE Novel: Cast No Shadow)
57. Vestios
    • Joined: 2310 (TOS Novel: Burning Dreams)
58. Beta Antares IV
    • Joined: By 2311
59. Lorillia
    • Joined: After 2311, By 2381
60. Deneva
    • Joined: By early-24th Century
    • Former United Earth colony
61. Gnala
    • Joined: By early-24th Century
62. Pythagos Clans
    • Joined: By early-24th Century
63. Tandar Prime
    • Joined: By 2320s
64. Zalda
    • Joined: 2330s-2340s
65. Alonis
    • Joined: c.2335
66. Kerovi
    • Joined: c.2340
67. Oriki
    • Joined: 2340s-2350s
68. Penzatti
    • Joined: Late 2340s (TNG Novel: Vendetta)
    • Rendered uninhabitable October 2367 by Borg attack; survivors relocated (TNG Novel: Vendetta)
69. Candelar IV
    • Joined: 2350s
70. Cestus III
    • Joined: By mid-24th Century
    • Former Federation colony
71. Dedderei
    • Joined: By mid-24th Century
72. Elas
    • Joined: By mid-24th Century
73. Gemworld
    • Joined: By mid-24th Century
74. Grazer
    • Joined: By mid-24th Century
75. Guidon Pontificate
    • Joined: By mid-24th Century
76. Hermat Directorate
    • Joined: By mid-24th Century
77. Kostolain
    • Joined: By mid-24th Century
78. Magna Roma
    • Joined: By mid-24th Century
79. Ochat
    • Joined: By mid-24th Century
80. Pandril
    • Joined: By mid-24th Century
81. Peliar Zel
    • Joined: By mid-24th Century
82. Selene
    • Joined: By mid-24th Century
83. Sigma Iotia II
    • Joined: By mid-24th Century
84. Tessen III
    • Joined: By mid-24th Century
85. Troyius
    • Joined: By mid-24th Century
86. Xindi Diaspora
    • Joined: By mid-24th Century
87. Danteri Empire
    • Joined: After c.2353, by 2373 (NF Novel: House of Cards)
88. Pahkwa
    • Joined: 2360
89. Bynaus
    • Joined: After 2364, by 2374 (TNG: "11001001"; SCE Short Story: "10 is Better Than 01")
90. Benzar
    • Joined: After 2365, by 2374
91. Skorr
    • Joined: After 2269, by 2376 (TAS: "The Jihad"; DS9 Novel: Mission Gamma: Twilight)
92. Deneb IV
    • Joined: After 2364, by 2378 (TNG Novel: A Time to Love, A Time to Hate)
93. Lendrin
    • Joined: After 2371, by 2378
94. Lembatta Prime
    • Joined: By 2373 (DS9: "Nor the Battle To the Strong"; Novel: Articles of the Federation)
95. Andros III
    • Joined: By late-24th Century
96. Antede III
    • Joined: By late-24th Century
97. Arbaza
    • Joined: By late-24th Century
98. Asario
    • Joined: By late-24th Century
99. Atrea IV
    • Joined: By late-24th Century
100. Bilana III
     • Joined: By late-24th Century
101. Bre’el IV
     • Joined: By late-24th Century
102. Cairn
     • Joined: By late-24th Century
103. Caldos II
     • Joined: By late-24th Century
     • Former Federation colony
104. Carnegie
     • Joined: By late-24th Century
     • Former Federation colony
105. Delb II
     • Joined: By late-24th Century
106. Gallamite homeworld
     • Joined: By late-24th Century
107. Grilasdixraksirvek
     • Joined: By late-24th Century
108. Hekaras II
     • Joined: By late-24th Century
109. Icor IX
     • Joined: By late-24th Century
110. Inferna Prime
     • Joined: By late-24th Century
111. Ktar
     • Joined: By late-24th Century
112. Meldrar I
     • Joined: By late-24th Century
113. Napea
     • Joined: By late-24th Century
114. Nasat
     • Joined: By late-24th Century
115. Pangea
     • Joined: By late-24th Century
116. Parnasi
     • Joined: By late-24th Century
117. Pentam V
     • Joined: By late-24th Century
118. Triex
     • Joined: By late-24th Century
119. Tyrellia
     • Joined: By late-24th Century
120. Visalayan
     • Joined: By late-24th Century (TNG Novel: A Time to Die)
121. Ysa
     • Joined: By late-24th Century
122. Zakdorn
     • Joined: By late-24th Century
123. Zanri
     • Joined: By late-24th Century
124. Damiano
     • 150th member
     • Joined: 2371 (TNG Comic: "Perchance to Dream")
       • Formerly Federation protectorate
125. T'hirada
     • 151st member
     • Joined: 2373 (TNG Novel: Resistance)
126. Ona
     • 152nd member
       • Over 150 members by October 2373 (Star Trek: First Contact)
     • Joined: Mid-2373 (TNG Novel: A Time to Be Born, A Time to Die)
127. Third Republic of Bajor
     • 154th member
     • Joined: September 29, 2376
128. Koa
     • 155th member (Novel: Articles of the Federation)
     • Joined: 2380 (Novel: Articles of the Federation)