This is a list of those who have received a writer credit on the British science fiction television programme Torchwood. The writers are listed in order of those who wrote the most stories to those who wrote the least. The number of stories each writer has written shall be indicated next to each writer's name. Writers who wrote stories that were not aired on television are not included on this list.
| Writer | Number of Episodes | First Story | Last/Latest Story | Notes |
| Chris Chibnall | 8 | "Day One" | "Exit Wounds" | Served as head writer during series 1 and 2. Wrote "42" and "The Hungry Earth"/"Cold Blood" for Doctor Who. |
| Russell T Davies | 6 | "Everything Changes" | "The Blood Line[1] | Responsible for the Doctor Who 2005 revival and Torchwood's conception. Co-wrote Children of Earth: Day Three with James Moran. |
| Jane Espenson | 5 [2] | "Dead of Night" | "The Blood Line"[3] | |
| Catherine Tregenna | 4 | "Out of Time" | "Adam" | |
| John Fay | 3 | "Children of Earth: Day Two" | "The Gathering" | |
| John Shiban | 2 | "Escape to L.A." | "The Middle Men" | |
| Helen Raynor | 2 | "Ghost Machine" | "To The Last Man" | Wrote "Daleks in Manhattan"/"Evolution of the Daleks" and "The Sontaran Stratagem"/"The Poison Sky" for Doctor Who. |
| Peter J. Hammond | 2 | "Small Worlds" | "From Out of the Rain" | |
| James Moran | 2 | "Sleeper" | "Children of Earth: Day Three" | Was approached to write for Doctor Who on the strength of his Sleeper script. Co-wrote Children of Earth: Day Three with series creator, Russell T. Davies. |
| Toby Whithouse | 1 | " Greeks Bearing Gifts" | Wrote "School Reunion", "The Vampires of Venice" and "The God Complex" for Doctor Who. | |
| Paul Tomalin | 1 | "They Keep Killing Suzie" | ||
| Dan McCulloch | 1 | " They Keep Killing Suzie" | ||
| Jacquetta May | 1 | " Random Shoes" | ||
| Noel Clarke | 1 | " Combat" | Played Mickey Smith in Doctor Who. | |
| J.C. Wilsher | 1 | "Reset" | ||
| Matt Jones | 1 | "Dead Man Walking" | Wrote "The Impossible Planet" and "The Satan Pit" for Doctor Who. | |
| Joseph Lidster | 1 | "A Day in the Death" | A long time Doctor Who audio writer, this was his first televised script. Wrote the 2008 Torchwood radio play Lost Souls. |
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| Phil Ford | 1 | "Something Borrowed" | Also wrote the Online Alternate Reality Game. Head writer for series 2 of The Sarah Jane Adventures. Wrote the animated serial "Dreamland" and co-wrote "The Waters of Mars" for Doctor Who. |
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| Doris Egan | 1 | "Rendition" | ||
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