Federation Members

Listed in order of joining:

1. United Earth
   • Joined: August 12, 2161
2. Confederacy of Vulcan
   • Joined: August 12, 2161
3. Andorian Empire
   • Joined: August 12, 2161
   • Withdrew: 2382
   • Rejoined: 2385
4. United Planets of Tellar
   • Joined: August 12, 2161
5. Alpha Centauri Concordium
   • Joined: August 12, 2161
6. Confederated Martian Colonies
   • Joined: 2162 (ENT Novel: A Choice of Futures)
7. Vega Colony
   • Joined: 2164 (ENT Novel: Tower of Babel)
   • Former United Earth colony
8. United Worlds and Colonies of Rigel
   • Joined: 2164 (ENT Novel: Tower of Babel)
9. Arken II
   • Joined: Early 2165 (ENT Novel: Uncertain Logic)
   • Former Andorian Empire subject world
10. Ithen
    • 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. Trill
    • Joined: By early-23rd Century
15. Argelius
    • Joined: 2240s/2250s (TOS Novel: Burning Dreams)
16. Valzhan
    • Joined: By mid-23rd Century
17. Axanar
    • Joined: After 2251, by 2260s
18. Alpha Proxima II
    • Joined: By 2260s
    • Former United Earth colony
19. Altair Colony
    • Joined: By 2260s
    • Former United Earth colony
20. Arcturus
    • Joined: By 2260s
21. Plutocracy of Ardana
    • Joined: By 2260s
    • Withdrew: 2269
    • Rejoined: By 2370s
22. Aurelia
    • Joined: By 2260s
23. Cait
    • Joined: By 2260s
    • Irregular participation
24. Cygnet
    • Joined: By 2260s
25. Denobula
    • Joined: By 2260s
26. Izar
    • Joined: By 2260s
    • Former United Earth colony
27. Makus III
    • Joined: By 2260s
28. Medusan
    • Joined: By 2260s
29. Ramatis III
    • Joined: By 2260s
30. Regulus
    • Joined: By 2260s
31. Sauria
    • Joined: By 2260s
32. Scoridia
    • Joined: By 2260s
33. Sulamid
    • Joined: By 2260s
34. Tiburon
    • Joined: By 2260s
35. People's Republic of Coridan
    • Joined: 2267
36. Janus VI
    • Joined: After 2267
37. Aaamazzara
    • Joined: By 2270s
38. Betelgeuse II
    • Joined: By 2270s
39. Kazar
    • Joined: By 2270s
40. Rhaandarel
    • Joined: By 2270s
41. Zaranai
    • Joined: By 2270s
42. Bole
    • Joined: By 2280s
43. Efros
    • Joined: By 2280s
44. Kashet
    • Joined: By 2280s
45. Kyppr
    • Joined: By 2280s (VOY Novel: Acts of Contrition)
46. Pacifica
    • Joined: By 2280s (implicit by TNG Novel: Genesis Wave, Part I)
47. Huan
    • Joined: 2293
48. Betazed
    • Joined: By 2300s (TLE Novel: Cast No Shadow)
49. Vestios
    • Joined: 2310 (TOS Novel: Burning Dreams)
50. Beta Antares IV
    • Joined: By 2311
51. Lorillia
    • Joined: After 2311, By 2381
52. Deneva
    • Joined: By early-24th Century
    • Former United Earth colony
53. Gnala
    • Joined: By early-24th Century
54. Pythagos Clans
    • Joined: By early-24th Century
55. Tandar Prime
    • Joined: By 2320s
56. Zalda
    • Joined: 2330s-2340s
57. Alonis
    • Joined: 2336
58. Kerovi
    • Joined: c.2340
59. Oriki
    • Joined: 2340s-2350s
60. Candelar IV
    • Joined: 2350s
61. Cestus III
    • Joined: By mid-24th Century
    • Former Federation colony
62. Dedderei
    • Joined: By mid-24th Century
63. Elas
    • Joined: By mid-24th Century
64. Gemworld
    • Joined: By mid-24th Century
65. Grazer
    • Joined: By mid-24th Century
66. Hermat Directorate
    • Joined: By mid-24th Century
67. Ochat
    • Joined: By mid-24th Century
68. Pandril
    • Joined: By mid-24th Century
69. Peliar Zel
    • Joined: By mid-24th Century
70. Selene
    • Joined: By mid-24th Century
71. Sigma Iotia II
    • Joined: By mid-24th Century
72. Tessen III
    • Joined: By mid-24th Century
73. Troyius
    • Joined: By mid-24th Century
74. Xindi Diaspora
    • Joined: By mid-24th Century
75. Pahkwa
    • Joined: 2360
76. Bynaus
    • Joined: After 2364, By 2375
77. Benzar
    • Joined: After 2365, by 2374
78. Damiano
    • Joined: 2371
79. Lendrin
    • Joined: After 2371, by 2378
80. Andros III
    • Joined: By late-24th Century
81. Antede III
    • Joined: By late-24th Century
82. Arbaza
    • Joined: By late-24th Century
83. Asario
    • Joined: By late-24th Century
84. Atrea IV
    • Joined: By late-24th Century
85. Bilana III
    • Joined: By late-24th Century
86. Bre’el IV
    • Joined: By late-24th Century
87. Cairn
    • Joined: By late-24th Century
88. Caldos II
    • Joined: By late-24th Century
    • Former Federation colony
89. Carnegie
    • Joined: By late-24th Century
    • Former Federation colony
90. Commonwealth of Denebia
    • Joined: By late-24th Century
91. Delb II
    • Joined: By late-24th Century
92. Delta Sigma IV
    • Joined: By late-24th Century
93. Gallamite
    • Joined: By late-24th Century
94. Grilasdixraksirvek
    • Joined: By late-24th Century
95. Hekaras II
    • Joined: By late-24th Century
96. Icor IX
    • Joined: By late-24th Century
97. Inferna Prime
    • Joined: By late-24th Century
98. Ktar
    • Joined: By late-24th Century
99. Magna Roma
    • Joined: By mid-24th Century
    • Preserver transplant world
100. Meldrar I
     • Joined: By late-24th Century
101. Napea
     • Joined: By late-24th Century
102. Nasat
     • Joined: By late-24th Century
103. Parnasi
     • Joined: By late-24th Century
104. Pentam V
     • Joined: By late-24th Century
105. Triex
     • Joined: By late-24th Century
106. Tyrellia
     • Joined: By late-24th Century
107. Ysa
     • Joined: By late-24th Century
108. Zakdorn
     • Joined: By late-24th Century
109. Zanri
     • Joined: By late-24th Century
110. Evora
     • 152nd member
       • Over 150 members by October 2373 (First Contact)
       • Three given as members between then and 155th
     • Joined: 2375
111. Ontail
     • 153rd member
     • Joined: 2375
112. Third Republic of Bajor
     • 154th member
     • Joined: September 29, 2376
113. Koa
     • 155th member (Novel: Articles of the Federation)
     • Joined: 2380