This list consists of fictional detectives from science fiction and fantasy stories.
| Detective | Creator | Debut | | Basil Argyros | Harry Turtledove | Agent of Byzantium (1987) |
| Marid Audran | George Alec Effinger | When Gravity Fails (1986) |
| Elijah Baley | Isaac Asimov | The Caves of Steel (1954) |
| Marty Burns | Jay Russell | Celestial Dogs (1996) |
| Colonel Thomas Bushell | Harry Turtledove | The Two Georges (1995) |
| Logan "Eyes Only" Cale | James Cameron
Charles H. Eglee | Dark Angel (2000) |
| Dr. Phil D'Amato | Paul Levinson | The Silk Code (1999) |
| Lord Darcy | Randall Garrett | Too Many Magicians (1966) |
| H. Seaton Davenport | Isaac Asimov | "The Dust of Death" (1956) |
| Rick Deckard | Philip K. Dick | Do Androids Dream of Electric Sheep? (1968) |
| Hawk & Fisher | Simon Green | Hawk & Fisher (1982) |
| John Constantine | Alan Moore | Saga of the Swamp Thing (1985) |
| Harry Dresden | Jim Butcher | Storm Front (2000) |
| Miles Flint | Kristine Kathryn Rusch | The Disappeared (2011) |
| Garrett P.I. | Glen Cook | Sweet Silver Blues (1987) |
| Dirk Gently | Douglas Adams | Dirk Gently's Holistic Detective Agency (1987) |
| Gil Hamilton | Larry Niven | ARM (1975) |
| Adam Hart | Erwin Neutzsky-Wulff | Adam Harts opdagelser (1972) |
| Bernard Jaffe | David O. Russell | I ♥ Huckabees (2004) |
| Vivian Jaffe | David O. Russell | I ♥ Huckabees (2004) |
| Natalie Lindstrom | Stephen Woodworth | Through Violet Eyes |
| Donald Lydecker | James Cameron
Charles H. Eglee | Dark Angel (2000) |
| Kline Maxwell | S. Andrew Swann | Dragons of the Cuyahoga (1995) |
| Thursday Next | Jasper Fforde | The Eyre Affair (2001) |
| R. Daneel Olivaw | Isaac Asimov | The Caves of Steel (1954) |
| Nohar Rajasthan | S. Andrew Swann | Forests of the Night (1989) |
| Magnus Ridolph | Jack Vance | The Complete Magnus Ridolph (1985) |
| Sam Space | William F. Nolan | Space for Hire (1971) |
| Jack Spratt | Jasper Fforde | The Big Over Easy (2005) |
| Wendell Urth | Isaac Asimov | "The Singing Bell" (1954) |
| Captain Samuel Vimes | Terry Pratchett | Guards! Guards! (1989) |
| Dan Vogelsang | James Cameron
Charles H. Eglee | Dark Angel (2000) |
| Yusuke Urameshi | Yoshihiro Togashi | Yu Yu Hakusho Volume 1 (1991) |
| The PI With No Name | Graham Edwards | "The Wooden Baby" (April 2005 Realms of Fantasy magazine) |
| John Taylor | Simon R. Green | Something from the Nightside (2003) |
| Sir Kay | Phyllis Ann Karr | The Idylls of the Queen (1982) |
| Martin Hel | Robin Wood | Skorpio Magazine (1992) |
| Carlisle Hsing | Lawrence Watt-Evans | Nightside City (1989) |
| Master Li and Number Ten Ox | Barry Hughart | Bridge of Birds (1984) |
| Rachel Morgan | Kim Harrison | Dead witch walking (2004) |
| Felix, aka the Fox | Assaph Mehr | Murder In Absentia (2015) |
| Takechi Lev Kovacs | Richard K. Morgan | Altered Carbon(2002) |
{{Fictional espionage navbox}}