This page lists appearances of Gwen Cooper in the order in which she experienced them. This timeline is based upon observations of the Doctor Who universe and the events that occur during each of these stories. From these observations we have attempted to build a concise timeline. It is assumed that for each novel, comic, audio or television series, their published, broadcast or numbered order is the order they occur in.
- Gwen joins Torchwood Three.
- Gwen's first day on the job.
- Gwen is still inexperienced with weapons. Set 66 years after 1941.
- Ianto keeps something secret in the hub.
- Gwen begins an affair with Owen Harper.
- Set three months after Everything Changes.
- Set in October 2007.
- Set 14 years after 1992, can be attributed to rounding.
- Captain Jack Harkness places this story in the week ending December 24th.
- Owen is visibly upset by the events of Out of Time in this story. He calls off his affair with Gwen.
- Continues where Captain Jack Harkness left off. Jack disappears from Torchwood.
- Gwen has started taking charge more in Jack's absence, in comparison to Captain Jack Harkness, where Owen was said to be second-in-command. Gwen is now engaged to Rhys.
- Occurs on Friday 20th of June, 114 years after 1894. Gwen has her first and only encounter with Tommy Brockless, who is annually defrosted for the last time. Thus, she has been at Torchwood for no longer than exactly one year.
- Set between Meat and Adam.
- Continues where Reset left off. Owen is resurrected, but with no lifesigns.
- Set three days after Reset.
- Set after Owen's undeath and before Gwen's wedding.
- Gwen mentions the Nostrovite, placing this story after Something Borrowed.
- Set in 2009, before Exit Wounds.
- Continues where Fragments left off. Owen and Tosh die.
- Gwen attempts to send a message to Owen and Tosh in the afterlife.
- Martha meets Jack for the first time since Owen and Tosh's funeral.
- The door to the Hub is still damaged from the Dalek attack.
- PROSE: Bay of the Dead
- PROSE: Into the Silence
- PROSE: The House That Jack Built
- PROSE: Risk Assessment
- PROSE: The Undertaker's Gift
- PROSE: Consequences: The Wrong Hands
- PROSE: Consequences: Virus
- AUDIO: Department X
- AUDIO: Ghost Train
- AUDIO: Asylum
- AUDIO: Golden Age
- AUDIO: The Dead Line
- PROSE: Consequences: Consequences
- AUDIO: The Devil and Miss Carew
- AUDIO: Submission
- AUDIO: Outbreak
- Norton Folgate is aware that Ianto will die soon.
- TV: Children of Earth: Day One
- TV: Children of Earth: Day Two
- TV: Children of Earth: Day Three
- TV: Children of Earth: Day Four
- TV: Children of Earth: Day Five
- Shrouded and The House of the Dead are set in the six-month gap at the end of Children of Earth: Day Five. Shrouded takes place at Ianto's funeral after Ianto dies in Day Four. Jack leaves Earth at the end of Children of Earth: Day Five. Days One through Five flow into one another.
- 6 months later, Jack leaves Earth.
- Prequel to The New World.
- Jack returns to Earth.
- Jack and Gwen are taken to America.
- TV: Dead of Night
- TV: Escape to LA
- TV: The Categories of Life
- TV: The Middle Men
- TV: Immortal Sins
- TV: End of the Road
- Jack and Gwen return to the UK, along with Esther after End of the Road. The New World through End of the Road flow into one another.
- Takes place a few months after End of the Road.
- Continues where The Gathering left off.
- Having been "dumped" by the crew of the Ice Maiden, Jack has returned to duty at Torchwood Cardiff.
- AUDIO: Aliens & Sex & Chips & Gravy
- AUDIO: Orr
- AUDIO: Superiority Complex
- AUDIO: Love Rat
- AUDIO: Zero Hour
- AUDIO: The Empty Hand
- AUDIO: Poker Face
- AUDIO: Tagged
- AUDIO: Escape Room
- AUDIO: Herald of the Dawn
- AUDIO: Future Pain
- After Day One ~ Before Fragments
- PROSE: Something in the Water
- PROSE: Trace Memory
- COMIC: The Legacy of Torchwood One!
- COMIC: Jetsam
- COMIC: Rift War!
- PROSE: Harm's Way
- PROSE: Black Water
- PROSE: Mrs Acres
- PROSE: The Beauty of Our Weapons
- PROSE: The Book of Jahi
- COMIC: Captain Jack and the Selkie
- PROSE: Who by Fire
- PROSE: Gordian
- COMIC: Broken
- COMIC: Fated to Pretend
- TV: Web of Lies
- COMIC: The Return of the Vostok
- AUDIO: The Death of Captain Jack
- AUDIO: We Always Get Out Alive
- AUDIO: Dissected
- AUDIO: Tropical Beach Sounds and Other Relaxing Seascapes #4
- Jack, Gwen, Ianto, Owen and Tosh are all present in the hub. Jack and Ianto are in a relationship.