T
- Vic Tablian
- Ahmed, Pyramids of Mars (1975)
- Mary Tamm
- Romana - Key to Time arc
- Catherine Tate
- Donna Noble, The Runaway Bride (2006); Partners in Crime-Journey's End (2008), The End of Time (2009–2010)
- Shirin Taylor
- Camper, The Stones of Blood (1978)
- Customer, Dragonfire (1987)
- Owen Teale
- Maldak, Vengeance on Varos (1985)
- Stacey Tendeter
- Naia, Underworld (1978)
- David Tennant
- The Doctor, "The Christmas Invasion" (2005) - "The End of Time" (2009–2010)
- Malcolm Terris
- Etnin, The Dominators (1968)
- Co-Pilot, The Horns of Nimon (1979) - (1980)
- Talfryn Thomas
- Mullins, Spearhead from Space (1970)
- Dave, The Green Death (1973)
- William Thomas
- Martin, Remembrance of the Daleks (1988)
- Mr Cleaver, "Boom Town" (2005)
- Eric Thompson
- Gaston/Viscount de Learns, The Massacre of St Bartholomew's Eve (1966)
- Stephen Thorne
- Azal, The Dæmons (1971)
- Omega, The Three Doctors (1972/3)
- First Ogron, Frontier in Space (1973)
- Kastrian Eldrad, The Hand of Fear (1976)
- Will Thorp
- Toby Zed, The Impossible Planet-The Satan Pit (2006)
- Royston Tickner
- Steinberger P. Green, The Daleks' Master Plan (1965)
- Robbins, The Sea Devils (1972)
- Malcolm Tierney
- Doland, Terror of the Vervoids (1986)
- John Tillinger
- Simon, The Massacre of St Bartholomew's Eve (1966)
- Alan Tilvern
- Forester, Planet of Giants (1964)
- Norman Tipton
- Idas, Underworld (1978)
- Richard Todd
- Sanders, Kinda (1982)
- Jenny Tomasin
- Tasambeker, Revelation of the Daleks (1985)
- Geoffrey Toone
- Hepesh, The Curse of Peladon (1972)
- Pip Torrens
- Rocastle, "Human Nature"-"The Family of Blood" (2007)
- Russell Tovey
- Alonso Frame, "Voyage of the Damned" (2007), The End of Time (2010)
- Harry Towb
- Osgood, The Seeds of Death (1969)
- McDermott, Terror of the Autons (1971)
- Primi Townsend
- Mula, The Pirate Planet (1978)
- Chris Tranchell
- Roger Colbert, The Massacre of St Bartholomew's Eve (1966)
- Jenkins, The Faceless Ones (1967)
- Commander Andred, The Invasion of Time (1978)
- Frederick Treves
- Lieutenant Brotadac, Meglos (1980)
- Ray Trickett
- Ancient Haemovore, The Curse of Fenric (1989)
- David Troughton
- Extra, The Enemy of the World (1967–68)
- Moor, The War Games (1969)
- King Peladon, The Curse of Peladon (1972)
- Professor Hobbes, Midnight (2008)
- Patrick Troughton
- The Doctor, The Power of the Daleks-(1966)-The War Games-(1969), The Three Doctors (1972/3), The Five Doctors (1983), The Two Doctors (1985)
- Yee Jee Tso
- Chang Lee, Doctor Who (1996)
- Peter Tuddenham
- Computer (voice), The Ark in Space (1975)
- The Mangradora Helix (voice), The Masque of Mandragora (1976)
- Brain (voice), Time and the Rani (1987)
- Patrick Tull
- Kroton Voices, The Krotons (1968)
- Ben Turner
- King Louis XV, "The Girl in the Fireplace" (2006)
Read more about this topic: List Of Doctor Who Cast Members