403 Inventive Last Names for Your Sci-Fi Universe

Science fiction emerged in the early 19th century with Mary Shelley’s “Frankenstein,” revolutionizing how we imagine future possibilities and alternative realities.

Sci-fi names have evolved alongside the genre, from simple modifications of existing names to completely invented nomenclature that reflects alien cultures and futuristic societies.

First names in sci-fi often incorporate unusual letter combinations or punctuation, creating an otherworldly feel while remaining pronounceable.

Middle names frequently serve as cultural identifiers, revealing a character’s heritage or status within their fictional society.

Last names in sci-fi typically convey lineage, highlighting technological advancement, cosmic origins, or evolutionary changes that shape the character’s identity and place in their universe.

A Collection of Unique Sci-Fi Last Names

1. Aeron

Reference: Sci-fi surname

2. Aetheris

Reference: Futuristic name

3. Altreus

Reference: Galactic origin

4. Andovian

Reference: Alien culture

5. Arcadia

Reference: Utopian society

6. Arcturus

Reference: Star system

7. Asimov

Reference: Sci-fi homage

8. Axion

Reference: Scientific term

9. Azimuth

Reference: Navigation concept

10. Balthar

Reference: Space Dynasty

11. Banevox

Reference: Cybernetic influence

12. Barzen

Reference: Planetary colony

13. Blazek

Reference: Energy source

14. Boralis

Reference: Cosmic Phenomenon

15. Bracknor

Reference: War-torn world

16. Calzareth

Reference: Intergalactic ruler

17. Carthos

Reference: Galactic alliance

18. Cindrex

Reference: Artificial intelligence

19. Chronis

Reference: Time traveler

20. Cipheron

Reference: Code encryption

21. Cobaltis

Reference: Metallic world

22. Corvex

Reference: Space mercenary

23. Cryzian

Reference: Frozen planet

24. Cygnar

Reference: Star cluster

25. Daelus

Reference: Futuristic thinker

26. Darkmere

Reference: Shadow realm

27. Datharion

Reference: Lost empire

28. Drayvus

Reference: Alien warrior

29. Draxon

Reference: Space pirate

30. Drexlin

Reference: Quantum Explorer

31. Ebonis

Reference: Black hole name

32. Eldrax

Reference: Robotic entity

33. Enzara

Reference: Mystical nebula

34. Exlaris

Reference: Hyperdrive specialist

35. Faezar

Reference: Celestial being

36. Fendral

Reference: Mars colony

37. Ferrinox

Reference: Industrial empire

38. Fluxis

Reference: Energy fluctuations

39. Galzar

Reference: Cosmic ruler

40. Ganymede

Reference: Jupiter’s moon

41. Genova

Reference: Space station

42. Gravik

Reference: Gravitational field

43. Halvex

Reference: Cyber enhancement

44. Helion

Reference: Solar winds

45. Hyperius

Reference: Speed enhancer

46. Ignis

Reference: Fire-based tech

47. Ingram

Reference: Artificial mind

48. Ionos

Reference: Plasma storms

49. Jandor

Reference: Galactic scientist

50. Jorvex

Reference: Data encryption

51. Kaelor

Reference: Star captain

52. Kaidron

Reference: Space Rebellion

53. Kaltrus

Reference: Deep-space colony

54. Keldrax

Reference: Cybernetic warrior

55. Kinetic

Reference: Motion technology

56. Kronis

Reference: Time anomaly

57. Lantros

Reference: Space fortress

58. Lazareth

Reference: Bioengineered survivor

59. Lirian

Reference: Intergalactic traveler

60. Lycron

Reference: Synthetic intelligence

61. Magellan

Reference: Stellar traveler

62. Malakar

Reference: Cosmic Conqueror

63. Mavros

Reference: Shadow realm

64. Metron

Reference: Cybernetic law keeper

65. Morvex

Reference: Alien Intelligence

66. Nebulis

Reference: Nebula Explorer

67. Nexus

Reference: Central hub

68. Nightfall

Reference: Secret operative

69. Noltren

Reference: Off-world colony

70. Novarex

Reference: Space pioneer

71. Nyzari

Reference: Alien diplomat

72. Obsidian

Reference: Black matter

73. Omicron

Reference: Artificial construct

74. Ozymandis

Reference: Fallen empire

75. Parallax

Reference: Quantum physics

76. Phasorin

Reference: Energy weapon

77. Polaris

Reference: Star Traveller

78. Promethar

Reference: Fire-based civilization

79. Pyrrion

Reference: Volcanic planet

80. Quantis

Reference: Data scientist

81. Quentar

Reference: Space diplomat

82. Radax

Reference: Cosmic warrior

83. Rhaelor

Reference: Mystic faction

84. Rivenox

Reference: Exiled leader

85. Rygar

Reference: War veteran

86. Sable

Reference: Stealth specialist

87. Sargan

Reference: Galactic tyrant

88. Seraphis

Reference: Angelic entity

89. Shadowmire

Reference: Dark dimension

90. Shardis

Reference: Crystal-powered tech

91. Silvarian

Reference: Moon colonist

92. Solis

Reference: Sun-based technology

93. Spectron

Reference: Light manipulator

94. Stellan

Reference: Space explorer

95. Sycorax

Reference: Alien Overlord

96. Tachyon

Reference: Faster-than-light

97. Targanis

Reference: Ruthless dictator

98. Tenebris

Reference: Deep-space anomaly

99. Thalvex

Reference: Underwater civilization

100. Thorvex

Reference: Thunder-based tech

101. Tiberian

Reference: Martian outpost

102. Titanis

Reference: Giant species

103. Trelvok

Reference: Cyber-warrior

104. Umbros

Reference: Shadow-based entity

105. Vaelix

Reference: Space strategist

106. Valkron

Reference: Galactic bounty hunter

107. Vantros

Reference: Quantum scientist

108. Varex

Reference: Genetic experiment

109. Veilari

Reference: Mystical race

110. Veridian

Reference: Green energy

111. Voidborn

Reference: Space Nomad

112. Vortex

Reference: Temporal distortion

113. Vossler

Reference: Cyber-enhanced soldier

114. Warvex

Reference: Intergalactic warlord

115. Xandros

Reference: Alien emperor

116. Xelphyr

Reference: Wind-based traveler

117. Xylen

Reference: Biochemical specialist

118. Zareth

Reference: Space rogue

119. Zephiron

Reference: Air-based intelligence

120. Zeraphis

Reference: Ethereal entity

121. Zerrax

Reference: Cybernetic assassin

122. Zirconis

Reference: Crystal-enhanced species

123. Zorvex

Reference: Deep-space Traveller

124. Zypherion

Reference: Wind-powered civilization

125. Altovax

Reference: Advanced robotics

126. Antronis

Reference: Artificial intelligence

127. Arzax

Reference: War-torn planet

128. Brimlock

Reference: Cosmic Enforcer

129. Crystan

Reference: Crystal-based entity

130. Dalvex

Reference: Quantum technician

131. Exatron

Reference: Energy specialist

132. Farwind

Reference: Interstellar drifter

133. Galaxor

Reference: Cosmic warrior

134. Hyperion

Reference: Titan-class spaceship

135. Indaris

Reference: Space diplomat

136. Jenthos

Reference: Galactic merchant

137. Korran

Reference: Resistance leader

138. Lutharion

Reference: Royal lineage

139. Montranis

Reference: Trade hub

140. Nytheris

Reference: Shadow assassin

141. Orvex

Reference: Data smuggler

142. Phalcor

Reference: Winged species

143. Quorvis

Reference: Space commander

144. Rylonis

Reference: High-tech city

145. Starborne

Reference: Celestial origin

146. Syntheris

Reference: Synthetic being

147. Tychon

Reference: Gravity manipulator

148. Ultronis

Reference: AI overlord

149. Vanthor

Reference: Space warrior

150. Xelzaren

Reference: Bioengineered hybrid

151. Zyvex

Reference: Nanotech expert

152. Altronis

Reference: Cyborg faction

153. Bastion

Reference: Galactic stronghold

154. Cindor

Reference: Fire-based race

155. Demarax

Reference: Deep-space miner

156. Eltron

Reference: Energy manipulator

157. Fenroth

Reference: Alien outcast

158. Genaris

Reference: Gene-modified elite

159. Hethron

Reference: Cosmic historian

160. Iridon

Reference: High-tech metropolis

161. Jaxorn

Reference: Space mercenary

162. Kryzoris

Reference: Frost-based species

163. Lytheron

Reference: Space drifter

164. Myronis

Reference: Starship mechanic

165. Nexaron

Reference: Interdimensional traveler

166. Omnix

Reference: All-seeing entity

167. Protheon

Reference: Cybernetic philosopher

168. Ryzarn

Reference: Starfighter pilot

169. Solvex

Reference: Sun-powered race

170. Tarquin

Reference: Empire founder

171. Vaelor

Reference: Void Explorer

172. Xenith

Reference: Planetary governor

173. Zevaris

Reference: Alien biologist

174. Zirathis

Reference: Light-based energy

175. Zyvorn

Reference: Stealth operative

176. Asgardis

Reference: Mythic lineage

177. Bastorax

Reference: Battle-hardened species

178. Chyron

Reference: AI strategist

179. Dronar

Reference: Drone manufacturer

180. Echron

Reference: Time paradox scientist

181. Flarexis

Reference: Solar flare manipulator

182. Graveth

Reference: Black hole explorer

183. Helzor

Reference: Supreme warlord

184. Indrion

Reference: Galactic ruler

185. Jhavorn

Reference: Space diplomat

186. Krylor

Reference: Armored giant

187. Lyzanor

Reference: Ethereal warrior

188. Mornix

Reference: Deep-space nomad

189. Nythor

Reference: Shadow manipulator

190. Omegis

Reference: Ultimate AI

191. Pytheris

Reference: Volcanic entity

192. Rionis

Reference: Cosmic traveler

193. Threxar

Reference: Energy-wielding race

194. Valtros

Reference: Titan-class warrior

195. Xandis

Reference: Time-warped hero

196. Yzorian

Reference: Interstellar trader

197. Zenovar

Reference: Hyper-intelligent race

198. Zortan

Reference: Alien researcher

199. Zykron

Reference: Cyber-enhanced soldier

200. Astronar

Reference: Cosmic Traveller

201. Bolthar

Reference: Planetary warlord

202. Chronaxis

Reference: Temporal anomaly

203. Draymor

Reference: Rogue captain

204. Eonvex

Reference: Time traveler

205. Faltrex

Reference: Space engineer

206. Galvinar

Reference: Cosmic Guardian

207. Helzarion

Reference: Solar deity

208. Icarion

Reference: Flight-based species

209. Jovekar

Reference: Astrobiologist

210. Klyzarn

Reference: Cybernetically enhanced

211. Lunaris

Reference: Moon colony

212. Maelvex

Reference: Storm controller

213. Nighthor

Reference: Stealth operative

214. Orynthar

Reference: Sky-dwelling species

215. Paradris

Reference: Starship Traveller

216. Quenlar

Reference: Space Nomad

217. Ryvok

Reference: Battle strategist

218. Stellanor

Reference: Cosmic explorer

219. Sybaris

Reference: Starborn philosopher

220. Tauron

Reference: Minotaur hybrid

221. Ultharion

Reference: Galactic overlord

222. Vexorian

Reference: Cybernetic empire

223. Xyphor

Reference: Speed-enhanced being

224. Ylzar

Reference: Galactic merchant

225. Zenrok

Reference: Interdimensional being

226. Ziradex

Reference: Space outlaw

227. Zylthar

Reference: Cosmic Ranger

228. Aegiron

Reference: Celestial knight

229. Baltrox

Reference: Titan warrior

230. Cindrax

Reference: Plasma engineer

231. Deyvorn

Reference: High-tech city

232. Exzaron

Reference: Galactic war strategist

233. Fluxorin

Reference: Reality manipulator

234. Genothis

Reference: Cybernetics researcher

235. Harkon

Reference: Empire leader

236. Ionovak

Reference: Plasma-based lifeform

237. Jenthros

Reference: Cyber-law enforcer

238. Kaelzor

Reference: Quantum physicist

239. Lyvex

Reference: Cosmic hacker

240. Mavrikis

Reference: Starship pilot

241. Novarian

Reference: Utopian civilization

242. Orelian

Reference: Ancient ruler

243. Phazron

Reference: Light-bending assassin

244. Quortan

Reference: Planetary researcher

245. Ryvian

Reference: Intergalactic spy

246. Soltren

Reference: Star-powered race

247. Thalzor

Reference: Cosmic law enforcer

248. Vaelthor

Reference: High-ranking warlord

249. Xeraphis

Reference: Mystic scientist

250. Zypharon

Reference: Wind-powered hero

251. Arcadion

Reference: Artificial intelligence

252. Bexlar

Reference: Galactic smuggler

253. Cryzor

Reference: Ice-based entity

254. Deltros

Reference: Deep-space rebel

255. Endrax

Reference: AI-controlled society

256. Ferrithis

Reference: Metal-forged race

257. Galadrex

Reference: Stellar beast

258. Havirion

Reference: Space-temple monk

259. Indraxor

Reference: Biomechanical entity

260. Jorvath

Reference: Galactic hero

261. Kytheris

Reference: Celestial cartographer

262. Luthenox

Reference: Time traveler

263. Morvian

Reference: Genetic engineer

264. Nyzaris

Reference: Alien diplomat

265. Orvandis

Reference: Cosmic messenger

266. Pyrion

Reference: Fire-wielding species

267. Quazrak

Reference: Cyber-genetic hybrid

268. Ryloth

Reference: Ancient civilization

269. Selvaris

Reference: Starry ocean planet

270. Taldorin

Reference: Cosmic judge

271. Ulzarion

Reference: Sun-powered deity

272. Vyrannis

Reference: Cosmic explorer

273. Xalvorn

Reference: Space tyrant

274. Zyvoth

Reference: Nebula drifter

275. Aetheron

Reference: Cosmic guardian

276. Biovek

Reference: Bioengineered species

277. Crystalis

Reference: Crystal-powered society

278. Dynathor

Reference: Energy generator

279. Enzarith

Reference: Celestial being

280. Fluxior

Reference: Energy manipulator

281. Gravion

Reference: Gravitational scientist

282. Halyzar

Reference: Wind-powered civilization

283. Intharion

Reference: Ancient explorer

284. Jovian

Reference: Jupiter colonist

285. Krytaris

Reference: Frozen empire

286. Lyraxis

Reference: Music-based civilization

287. Metrax

Reference: Mechanized planet

288. Nezarion

Reference: Interdimensional traveler

289. Omnis

Reference: All-seeing entity

290. Phyron

Reference: Fire-based warlord

291. Quendrix

Reference: Quantum manipulator

292. Ryphos

Reference: Space pirate

293. Starforged

Reference: Battle-hardened hero

294. Targelon

Reference: Cosmic trader

295. Uvaris

Reference: Mystic healer

296. Vireon

Reference: Star captain

297. Xandrix

Reference: Intergalactic noble

298. Zorthis

Reference: Space explorer

299. Azrion

Reference: Stellar Traveller

300. Baltharis

Reference: Space Emperor

301. Celvex

Reference: Cyber-enhanced lifeform

302. Draxalis

Reference: Battle-hardened species

303. Eldan

Reference: Solar warrior

304. Fendric

Reference: Bio-engineered soldier

305. Grythar

Reference: Galactic guardian

306. Helionis

Reference: Light-forged civilization

307. Isonar

Reference: High-tech species

308. Janthar

Reference: Space-faring diplomat

309. Kraylix

Reference: Shadow manipulator

310. Lorvian

Reference: Intergalactic traveler

311. Morthis

Reference: Mystic scientist

312. Nexor

Reference: Quantum innovator

313. Orvath

Reference: Deep-space wanderer

314. Pyralis

Reference: Flame-based civilization

315. Qyvaris

Reference: Energy master

316. Ryzan

Reference: Space outlaw

317. Soltrax

Reference: Starship commander

318. Tarnis

Reference: Interstellar smuggler

319. Ultor

Reference: Cosmic ruler

320. Vezaris

Reference: Planetary defender

321. Xyldor

Reference: Genetic manipulator

322. Zepharis

Reference: Airborne species

323. Aelthor

Reference: Star-born knight

324. Borvex

Reference: Cybernetic assassin

325. Creon

Reference: Utopian visionary

326. Deltarion

Reference: Cosmic Enforcer

327. Exos

Reference: Galactic architect

328. Fintheris

Reference: Cyber-alchemist

329. Galvex

Reference: Gravity manipulator

330. Hyrion

Reference: Titan-class engineer

331. Ixaris

Reference: Time traveler

332. Jorven

Reference: Space scientist

333. Kryos

Reference: Frost-based warrior

334. Lydorin

Reference: Deep-space explorer

335. Marzian

Reference: Mars-born colonist

336. Nebulor

Reference: Nebula-based species

337. Omnar

Reference: AI-driven intelligence

338. Plutaris

Reference: Planetary Empire

339. Quovax

Reference: Intergalactic trader

340. Rylzar

Reference: Celestial protector

341. Syndros

Reference: Cosmic anarchist

342. Thalvian

Reference: Interstellar law keeper

343. Urion

Reference: Starbound leader

344. Valtrex

Reference: Advanced warrior

345. Xenthos

Reference: Dark matter entity

346. Zynthar

Reference: Alien shapeshifter

347. Arthenis

Reference: Galactic nomad

348. Brovix

Reference: Space mercenary

349. Cytheris

Reference: AI civilization

350. Dronis

Reference: Automated ruler

351. Eryzon

Reference: Time-sensitive traveler

352. Farzen

Reference: Deep-space researcher

353. Gravorn

Reference: Black hole scientist

354. Hydrax

Reference: Water-based species

355. Irothis

Reference: High-tech outlaw

356. Javorian

Reference: Cosmic trickster

357. Klyvorn

Reference: Robotic tactician

358. Lorenzis

Reference: Space colony founder

359. Myzarian

Reference: Interstellar noble

360. Nyxaris

Reference: Shadow Empire

361. Orzan

Reference: Space rogue

362. Pulsar

Reference: Energy core specialist

363. Quenath

Reference: Data encryption master

364. Rytorian

Reference: Stellar archaeologist

365. Skylis

Reference: Cloud-based intelligence

366. Tetheris

Reference: Warp scientist

367. Ulythar

Reference: Cosmic oracle

368. Velthos

Reference: Galactic tactician

369. Xyronis

Reference: Energy warrior

370. Zorthen

Reference: Rogue scientist

371. Andris

Reference: Interstellar navigator

372. Baelthor

Reference: Space warrior

373. Celzaris

Reference: Energy-based lifeform

374. Darvax

Reference: Space warlord

375. Eltreon

Reference: Cosmic tactician

376. Fenrix

Reference: Deep-space raider

377. Galythar

Reference: Starlight engineer

378. Hexion

Reference: AI-controlled species

379. Ionaris

Reference: Stellar energy wielder

380. Javornis

Reference: Cosmic diplomat

381. Kaelion

Reference: High-tech warrior

382. Lyzan

Reference: Space explorer

383. Marvex

Reference: Quantum architect

384. Neziron

Reference: Cyber-enhanced soldier

385. Omegor

Reference: All-powerful AI

386. Pythoris

Reference: Galactic prophecy keeper

387. Quorzar

Reference: Warp scientist

388. Rendaris

Reference: Galactic strategist

389. Sylvaris

Reference: Solar-based entity

390. Tyndros

Reference: Cosmic protector

391. Urexian

Reference: Deep-space miner

392. Verax

Reference: Cyber-enhanced tactician

393. Xornis

Reference: AI-controlled assassin

394. Zephron

Reference: Cosmic engineer

395. Zylvex

Reference: Bio-tech researcher

396. Altharion

Reference: Celestial guardian

397. Brizan

Reference: Cosmic Defender

398. Chromis

Reference: Light-based warrior

399. Dynaris

Reference: Stellar manipulator

400. Exion

Reference: Space rogue

401. Fyrion

Reference: Fire-powered species

402. Zortan

Reference: Cybernetic Overlord

403. Zykron

Reference: Temporal Explorer

Wrapping it up

Sci-fi last names are powerful storytelling tools, instantly communicating complex worldbuilding through carefully crafted jargon.

These surnames often blend familiar elements with innovative constructions, creating names that feel alien and accessible to readers and viewers.

The evolution of sci-fi surnames reflects our changing relationship with technology, space exploration, and our vision of humanity’s future across the stars.

When crafting sci-fi surnames, writers balance uniqueness with readability, ensuring names are memorable without being unpronounceable.

The best sci-fi surnames become cultural touchstones – from Skywalker to Ripley – transcending their original works and entering our collective imagination.

In the vast universe of science fiction, a well-crafted surname isn’t just identification—it’s the final frontier of character design.