| 100% | TNG | 3 | Sci-fi TV series before "DS9" |
| 63% | STARTREK | 8 | Sci-fi TV series created by Gene Roddenberry |
| 62% | UFO | 3 | 1972 sci-fi TV series |
| 62% | WESTWORLD | 9 | Sci-fi TV series about a resort with robots |
| 60% | TREK | 4 | "Star ___" (sci-fi TV series) |
| 59% | STARTREK | 8 | Classic TV sci-fi series |
| 58% | TNG | 3 | Sci-fi spin-off before "DS9" |
| 58% | TREK | 4 | Star ___, sci-fi TV series |
| 58% | THEXFILES | 9 | Sci-fi TV series that originally aired from 1993 to 2002: 2 wds. |
| 57% | TREK | 4 | "Star ___," sci-fi TV series |
| 56% | GALACTICA | 9 | Battlestar __; sci-fi TV series with Dirk Benedict |
| 56% | FRINGE | 6 | Sci-fi TV series starring John Noble that featured an animated episode in season 3 |
| 55% | STARTREK | 8 | Sci fi series with Captains Kirk, Picard, Janeway |
| 55% | THEORVILLE | 10 | Sci-fi TV series created by and starring Seth MacFarlane as Captain Ed Mercer (2 wds.) |
| 54% | WHO | 3 | "Doctor ___" (British sci-fi TV series since 1963) |
| 54% | BLACKMIRROR | 11 | Sci-fi TV series on Netflix that revolves around the effect of technology on people: 2 wds. |
| 53% | TRAX | 4 | "Time ___," 1990's sci-fi TV series |
| 51% | TRAX | 4 | "Time ___," sci-fi TV series starring Dale Midkiff and Elizabeth Alexander |
| 51% | STAR | 4 | With 58-Across, iconic 1960s sci-fi TV series |
| 50% | GALACTICA | 9 | Dystopian sci-fi TV series "Battlestar ___" by Glen A. Larson, where humans are forced to abandon their planet |
| 48% | ATLANTIS | 8 | "Stargate ___," sci-fi TV series that is a spin-off of "Stargate SG-1" |
| 48% | LIMITS | 6 | "The Outer ___" (1960s sci-fi TV series with a reboot in the 1990s) |
| 48% | SILO | 4 | Sci-fi TV series starring Rashida Jones that is set in a dystopian future where people exist only in a grain-storing tower |
| 48% | DARK | 4 | "___ Matter," sci-fi TV series starring Joel Edgerton who travels between alternate realities |
| 48% | TREK | 4 | Sci-fi series "Star ___" |
| 48% | ETS | 3 | Sci-fi series extras |
| 48% | WEST | 4 | "The Wild Wild ___," '60s sci-fi series starring Robert Conrad that reunited the original cast for two TV reunion films |
| 47% | TNG | 3 | Sci-fi predecessor of DS9 |
| 47% | CARBON | 6 | "Altered ___," cyberpunk sci-fi TV series starring Chris Conner that is set in 2384 |
| 47% | GALACTICA | 9 | Spaceship of sci-fi TV |