List of Doctor Who supporting characters

Over the course of its twenty-six years on television, the long-running British science fiction television series Doctor Who has not only seen changes in the actors to play Doctor Who, but in the supporting cast as well. This is not an attempt to make a comprehensive list of all supporting characters or alien races in Doctor Who, but merely the most significant.

with the First Doctor

 * Susan Foreman (Carole Ann Ford) (Seasons 1, 2 )
 * Barbara Wright (Jacqueline Hill) (Season 1-3)
 * Ian Chesterton (William Russell) (Seasons 1-3)
 * Vicki (Maureen O'Brien) (Seasons 2, 3)
 * Steven Taylor (Peter Purves) (Seasons 2, 3)
 * Katarina (Adrienne Hill) (Season 3)
 * Sara Kingdom (Jean Marsh). (Season 3)
 * Dorothea "Dodo" Chaplet (Jackie Lane) (Season 3)
 * Ben Jackson (Michael Craze) (Seasons 3, 4)
 * Polly (Anneke Wills), (Seasons 3, 4)

with the Second Doctor

 * Ben Jackson (Season 4)
 * Polly (Season 4)
 * James Robert "Jamie" McCrimmon (Frazer Hines) (Seasons 5, 6)
 * Victoria Waterfield (Deborah Watling) (Season 4, 5)
 * Zoe Herriot (Wendy Padbury) (Season 6)

with the Third Doctor

 * Dr. Elizabeth "Liz" Shaw (Caroline John) (Season 7)
 * Josephine "Jo" Grant (Katy Manning) (Season 8-10)
 * Sarah Jane Smith (Elizabeth Sladen) (Season 11)

with the Fourth Doctor

 * Sarah Jane Smith (Season 12-14)
 * Harry Sullivan (Ian Marter) (Season 12)
 * Leela (Louise Jameson) (Seasons 14, 15)
 * K-9 Mark I (voice of John Leeson) (Season 15)
 * K-9 Mark II (voice of John Leeson [Seasons 16 and 18]), voice of David Brierley [Season 17])
 * Romanadvoratrelundar ("Romana") (Mary Tamm [Season 16]; Lalla Ward [Season 17, 18])
 * Adric (Matthew Waterhouse) (Season 18)
 * Nyssa (Sarah Sutton) (Season 18)
 * Tegan Jovanka (Janet Fielding) (Season 18)

with the Fifth Doctor

 * Adric (Season 19)
 * Nyssa of Traken (Seasons 19, 20)
 * Tegan Jovanka (Seasons 19-21)
 * Vislor Turlough (Mark Strickson) (Seasons 20, 21)
 * Perpugilliam "Peri" Brown (Nicola Bryant) (Season 21)
 * Kamelion (voice of Gerald Flood) (Season 20, 21)

with the Sixth Doctor

 * Perpugilliam "Peri" Brown (Nicola Bryant) (Seasons 21-23)
 * Melanie "Mel" Bush (Bonnie Langford) (Season 23)

with the Seventh Doctor

 * Melanie "Mel" Bush (Season 24)
 * Dorothy "Ace" McShane (Sophie Aldred) (Seasons 24-26)

with the Eighth Doctor

 * Dr. Grace Holloway (Daphne Ashbrook) (1996 telemovie)

with the Ninth Doctor

 * Rose Tyler (Billie Piper) (Series 1)

Recurring or significant villains

 * The Meddling Monk (Peter Butterworth)
 * The Master (Roger Delgado; Peter Pratt; Geoffrey Beevers; Anthony Ainley; Eric Roberts)
 * Davros (Michael Wisher; David Gooderson; Terry Molloy)
 * Omega (Stephen Thorne; Ian Collier)
 * The Black Guardian (Valentine Dyall)
 * Sil (Nabil Shabin)
 * The Rani (Kate O'Mara)
 * The Valeyard (Michael Jayston)
 * The War Chief (Edward Brayshaw)

Other recurring or important characters

 * Brigadier Lethbridge-Stewart (Nicholas Courtney)
 * Sergeant Benton (John Levene)
 * Captain Mike Yates (Richard Franklin)
 * Borusa (John Arnatt; Philip Latham; Angus McKay; Leonard Sachs)
 * The Inquisitor (Lynda Bellingham)
 * Sabalom Glitz (Tony Selby)

Significant alien species

 * Autons
 * Cybermen
 * Daleks
 * Ice Warriors (from Mars)
 * Ogrons
 * Rutan Host
 * Sea Devils
 * Silurians
 * Sontarans
 * Yeti
 * Zygons

Characters from Doctor Who spin-offs

 * Absalom Daak
 * Beep the Meep
 * Bernice "Benny" Summerfield
 * Charlotte "Charley" Pollard
 * Erimem
 * Evelyn Smythe
 * Frobisher
 * Iris Wildthyme
 * K-9 Mark III