This page lists the various incarnations and other versions of the Doctor in order. This timeline is based upon observations of the Doctor Who universe and the events that occur during each of these stories.
By most accounts, the existence and relative placements of the numbered Doctors are all but undisputed. However, there exist unnumbered Doctors that exist in potential futures, or even in the past prior to the First Doctor. As well as that, several stories are not so clear as to what version of the Doctor featured in their events.
As a Time Lord, the Doctor was initially limited to a regeneration cycle of thirteen lives. However, the Eleventh Doctor was enabled to regenerate further as a result of additional regeneration energy provided by his fellow Time Lords. Noting his uncertainty as to how many times he could now regenerate, the Twelfth Doctor, first incarnation of the new cycle, speculated that he could potentially "keep on regenerating forever."
- See also: The Doctor's age
Before the Original Edit
- The Timeless Child
- The earliest known incarnations of the Doctor.
- Eight incarnations prior to the First Doctor, at least one of them was Patience's husband. May have been the Other, who may have reincarnated into the First Doctor. The Thirteenth Doctor later recalled these incarnations in order to overload the Matrix, shortly after learning of her previous "Timeless Child" incarnations, suggesting a connection.
- First "Morbius Doctor" (Christopher Barry)
- Second "Morbius Doctor" (Robert Banks Stewart)
- Third "Morbius Doctor" (Christopher Baker)
- Fourth "Morbius Doctor" (Philip Hinchcliffe)
- Fifth "Morbius Doctor" (Douglas Camfield)
- Sixth "Morbius Doctor" (Graeme Harper)
- Seventh "Morbius Doctor" (Robert Holmes)
- Eighth "Morbius Doctor" (George Gallaccio)
All Thirteen Edit
- By his own word, the "original" Doctor. (TV: The Five Doctors, Time Upon a Time)
- In an alternate timeline, he died on Grace Alone. (AUDIO: The First Wave)
- The Doctor (The Five O'Clock Shadow)
- Alternately: The Doctor (Auld Mortality), El Jefe
- Clone: Second Doctor (clone)
- Alternately: Previous Doctor (Exile) (Nicholas Briggs), Second Doctor (Inferno Earth)
- Alternately: The Doctor (Sympathy for the Devil) (David Warner), Third Doctor (Inferno Earth) (Jack Kine), The Doctor (Exile) (Arabella Weir), The Doctor (Who's Who? Earth) (Jon Pertwee)
- Clone: Fourth Doctor (clone)
- Encountered and merged with the Watcher just prior to his regeneration. (TV: Logopolis)
- The Doctor (The Colour of Monsters)
- Clone: Sixth Doctor (Dalek duplicate), Sixth Doctor (clone)
- Alternately: Burner Doctor, Theta Sigma (Forever)
- Alternately: Eighth Doctor (Grace Holloway's husband), Eighth Doctor (cyborg), Doc Gallifrey, Joe Smith, Tardis Tails, Quiquaequod, Johann Schmidt (Paul McGann), Eighth Doctor (Obverse)
- The ninth incarnation notably fought in the Last Great Time War while abandoning the title of "doctor". Rejected by his succeeding incarnations before being accepted by the Eleventh Doctor. (TV: The Day of the Doctor)
- Alternatively: Ninth Doctor (Doctor Who and the Time War)
- Briefly became the human John Smith.
- The father of Jenny. (TV: The Doctor's Daughter)
- Died in Donna's World. (TV: Turn Left)
- Once regenerated and kept the same face, an act which also produced the Meta-Crisis Tenth Doctor and the DoctorDonna. (TV: The Stolen Earth/Journey's End)
- The last incarnation of the Doctor's original regeneration cycle, it was in this form that the Doctor was originally destined to die permanently, on the planet Trenzalore. (TV: The Name of the Doctor)
- Duplicate: Eleventh Doctor (Ganger)
- Traveling back to ancient Gallifrey, assumed the role of the figure known as the Other. (COMIC: The Lost Dimension)
- Briefly held the identity of John Smith.
- On the brink of dying of old age, the Doctor's life was saved when Clara Oswald convinced the Time Lords to provide him with additional regeneration energy, granting him a "whole new regeneration cycle" (TV: The Time of the Doctor) with an indeterminate amount of regenerations. (TV: Kill the Moon, Hell Bent, The Doctor Falls)
A new cycle Edit
- The product of "regeneration number thirteen." (TV: The Time of the Doctor)
- Alternately: Twelfth Doctor#Multi-Doctor event
- Duplicate: Twelfth Doctor (Shadow World)
- A potential successor to the Thirteenth Doctor.
- From the future relative to the Seventh Doctor. He believes he is the last incarnation.
- Resembling an elderly version of the Fourth Doctor, this incarnation serves as curator of the National Gallery, having retired from his adventurous ways.
- Following an encounter with the Thirteenth Doctor, Ruth Clayton resumes her true identity as the Doctor. Lee Clayton and Gat are both killed during the ordeal, while the Doctor escapes in her TARDIS. (TV: Fugitive of the Judoon)
Unidentified Doctors Edit
- Familiar with the Daleks.
- An incarnation who works for the Time Lords.
- After the Sixth Doctor.
Future Doctors Edit
- From the future relative to the Seventh Doctor, this incarnation is based on the Doctor portrayed by Nicholas Briggs in the Audio Visuals fan productions.
- After the Eighth Doctor, this incarnation is an allusion to the Ninth Doctor (Rowan Atkinson) from NOTVALID: The Curse of Fatal Death.
- After the Eighth Doctor.
Seven Keys to Doomsday Edit
- Previous Doctor (Seven Keys to Doomsday) (Nicholas Briggs)
- The Doctor (Seven Keys to Doomsday) (Trevor Martin)
The Cabinet of Light Edit
Clive's Doctors Edit
- A potential Doctor recorded by Clive Finch, this incarnation is described as a tall, bald black woman wielding a flaming sword. (PROSE: Rose)
- A potential Doctor recorded by Clive Finch, this incarnation is described as a young girl or boy in a hi-tech wheelchair with a robot dog at their side. (PROSE: Rose)
"Last Doctors" Edit
- An incarnation of the Doctor from the far future and father of Miranda Dawkins. Was assassinated by rebels on the night of his daughter's birth. (COMIC: Miranda)
- The final incarnation of the Doctor died during the War in Heaven. His corpse became the Relic. (PROSE: Alien Bodies)
Alternate universes Edit
The Infinity Doctors Edit
Full Fathom Five Edit
False Negative Edit
- A possible future version of the Doctor. (AUDIO: The Carrionite Curse) Primarily an adversary of the Sixth Doctor, the Valeyard is, according to the Master, an amalgamation of the Doctor's darker sides from between his twelfth and final incarnations. (TV: The Ultimate Foe) According to the Valeyard himself, he was created as a result of experiments conducted by the final incarnation of the Doctor as he attempted to break the regeneration cycle's limit of thirteen lives. (AUDIO: Trial of the Valeyard)
- A human time traveller and inventor of TARDIS, this character was adapted from the First Doctor. A potentially unreliable account suggests that Dr. Who is the Other. (PROSE: Human Nature) According to a theory by Peter Cushing, Dr. Who is a future incarnation of the Doctor who was forced to relive his earlier adventures by the Celestial Toymaker.