Federation Members

Listed in order of joining the Federation:

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. Arixus
    • Joined: By 2248 (DIS Novel: The Way to the Stars)
17. Bolias
    • Joined: By 2248 (DIS Novel: The Way to the Stars)
18. Elisurian homeworld
    • Joined: By 2248 (DIS Novel: The Way to the Stars)
19. Ri'tis
    • Joined: By 2248 (DIS Novel: The Way to the Stars)
20. Valzhan
    • Joined: By mid-23rd Century
21. Axanar
    • Joined: After 2251, by 2260s
22. Alpha Proxima II
    • Joined: By 2260s
    • Former United Earth colony
23. Altair Colony
    • Joined: By 2260s
    • Former United Earth colony
24. Arcturus
    • Joined: By 2260s
25. Aurelia
    • Joined: By 2260s
26. Cait
    • Joined: By 2260s
    • Irregular participation
27. Cygnet
    • Joined: By 2260s
28. Denobula
    • Joined: By 2260s
29. Izar
    • Joined: By 2260s
    • Former United Earth colony
30. Makus III
    • Joined: By 2260s
31. Medusan
    • Joined: By 2260s
32. Plutocracy of Ardana
    • Joined: By 2260s
    • Withdrew: 2269
    • Rejoined: By 2370s
33. Ramatis III
    • Joined: By 2260s
34. Regulus
    • Joined: By 2260s
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. People's Republic of Coridan
    • Joined: 2267
41. Janus VI
    • Joined: After 2267
42. Aaamazzara
    • Joined: By 2270s
43. Betelgeusian Argosies
    • Joined: By 2270s
44. Kazar
    • Joined: By 2270s
45. Rhaandarel
    • Joined: By 2270s
46. Zaranai
    • Joined: By 2270s
47. Lorina
    • Joined: After 2273 (TOS Novel: Ex Machina)
48. Delta Sigma IV
    • Joined: 2278 (TNG Novel: A Time to Love)
49. Efros
    • Joined: By 2280s
50. Kashet
    • Joined: By 2280s
51. Kyppr
    • Joined: By 2280s (VOY Novel: Acts of Contrition)
52. Pacifica
    • Joined: By 2280s (implicit by TNG Novel: Genesis Wave, Part I)
53. Huan
    • Joined: 2293
54. Betazed
    • Joined: By 2300s (TLE Novel: Cast No Shadow)
55. Vestios
    • Joined: 2310 (TOS Novel: Burning Dreams)
56. Beta Antares IV
    • Joined: By 2311
57. Lorillia
    • Joined: After 2311, By 2381
58. Deneva
    • Joined: By early-24th Century
    • Former United Earth colony
59. Gnala
    • Joined: By early-24th Century
60. Pythagos Clans
    • Joined: By early-24th Century
61. Tandar Prime
    • Joined: By 2320s
62. Zalda
    • Joined: 2330s-2340s
63. Alonis
    • Joined: c.2335
64. Kerovi
    • Joined: c.2340
65. Oriki
    • Joined: 2340s-2350s
66. Penzatti
    • Joined: Late 2340s (TNG Novel: Vendetta)
    • Rendered uninhabitable October 2367 by Borg attack; survivors relocated (TNG Novel: Vendetta)
67. Candelar IV
    • Joined: 2350s
68. Cestus III
    • Joined: By mid-24th Century
    • Former Federation colony
69. Dedderei
    • Joined: By mid-24th Century
70. Elas
    • Joined: By mid-24th Century
71. Gemworld
    • Joined: By mid-24th Century
72. Grazer
    • Joined: By mid-24th Century
73. Guidon Pontificate
    • Joined: By mid-24th Century
74. Hermat Directorate
    • Joined: By mid-24th Century
75. Magna Roma
    • Joined: By mid-24th Century
76. Ochat
    • Joined: By mid-24th Century
77. Pandril
    • Joined: By mid-24th Century
78. Peliar Zel
    • Joined: By mid-24th Century
79. Selene
    • Joined: By mid-24th Century
80. Sigma Iotia II
    • Joined: By mid-24th Century
81. Tessen III
    • Joined: By mid-24th Century
82. Troyius
    • Joined: By mid-24th Century
83. Xindi Diaspora
    • Joined: By mid-24th Century
84. Pahkwa
    • Joined: 2360
85. Bynaus
    • Joined: After 2364, by 2374 (TNG: "11001001"; SCE Short Story: "10 is Better Than 01")
86. Benzar
    • Joined: After 2365, by 2374
87. Damiano
    • Joined: 2371
88. Skorr
    • Joined: After 2269, by 2376 (TAS: "The Jihad"; DS9 Novel: Mission Gamma: Twilight)
89. Deneb IV
    • Joined: After 2364, by 2378 (TNG Novel: A Time to Love, A Time to Hate)
90. Lendrin
    • Joined: After 2371, by 2378
91. Andros III
    • Joined: By late-24th Century
92. Antede III
    • Joined: By late-24th Century
93. Arbaza
    • Joined: By late-24th Century
94. Asario
    • Joined: By late-24th Century
95. Atrea IV
    • Joined: By late-24th Century
96. Bilana III
    • Joined: By late-24th Century
97. Bre’el IV
    • Joined: By late-24th Century
98. Cairn
    • Joined: By late-24th Century
99. Caldos II
    • Joined: By late-24th Century
    • Former Federation colony
100. Carnegie
     • Joined: By late-24th Century
     • Former Federation colony
101. Delb II
     • Joined: By late-24th Century
102. Gallamite
     • Joined: By late-24th Century
103. Grilasdixraksirvek
     • Joined: By late-24th Century
104. Hekaras II
     • Joined: By late-24th Century
105. Icor IX
     • Joined: By late-24th Century
106. Inferna Prime
     • Joined: By late-24th Century
107. Ktar
     • Joined: By late-24th Century
108. Meldrar I
     • Joined: By late-24th Century
109. Napea
     • Joined: By late-24th Century
110. Nasat
     • Joined: By late-24th Century
111. Parnasi
     • Joined: By late-24th Century
112. Pentam V
     • Joined: By late-24th Century
113. Triex
     • Joined: By late-24th Century
114. Tyrellia
     • Joined: By late-24th Century
115. Visalayan
     • Joined: By late-24th Century (TNG Novel: A Time to Die)
116. Ysa
     • Joined: By late-24th Century
117. Zakdorn
     • Joined: By late-24th Century
118. Zanri
     • Joined: By late-24th Century
119. 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)
120. Third Republic of Bajor
     • 154th member
     • Joined: September 29, 2376
121. Koa
     • 155th member (Novel: Articles of the Federation)
     • Joined: 2380 (Novel: Articles of the Federation)