B
- Annette Badland
- Margaret Blaine, "Aliens of London" - "World War Three", "Boom Town" (2005)
- John Bailey
- Commander, The Sensorites (1964)
- Edward Waterfield, The Evil of the Daleks (1967)
- Sezon, The Horns of Nimon (1979)
- David Bailie
- Dask, The Robots of Death (1977)
- Colin Baker
- Commander Maxil, Arc of Infinity (1983)
- The Doctor, The Caves of Androzani (1984) - The Trial of a Time Lord: The Ultimate Foe (1986)
- George Baker
- Login, Full Circle (1980)
- Matt Baker
- Himself, "Aliens of London" (2005)
- Tom Baker
- The Doctor, Planet of the Spiders (1974) - Logopolis (1981)
- David Banks
- Cyberleader, Earthshock (1982), The Five Doctors (1983), Attack of the Cybermen (1985), Silver Nemesis (1988)
- Yasmin Bannerman
- Jabe, "The End of the World" (2005)
- Peter Barkworth
- Leader Clent, The Ice Warriors (1967)
- Thelma Barlow
- Lady Thaw, "The Lazarus Experiment" (2007)
- Tim Barlow
- Tyssan, Destiny of the Daleks (1979)
- Lynda Baron
- The Gunfighters (1966) Sang 'Ballad of the Last Chance Saloon' offscreen.
- Wrack, Enlightenment (1983)
- Val, Closing Time (2011)
- Patrick Barr
- Hobson, The Moonbase (1967)
- Ray Barrett
- Bennett/Koquillion, The Rescue (1965)
- Michael Barrington
- Sir Colin Thackeray, The Seeds of Doom (1976)
- Keith Barron
- Captain Striker, Enlightenment (1983)
- John Barrowman
- Captain Jack Harkness, "The Empty Child" - "The Parting of the Ways" (2005), "Utopia" - "Last of the Time Lords" (2007), "The Stolen Earth" - "Journey's End" (2008), The End of Time (2010)
- Morris Barry
- Tollund, The Creature from the Pit (1979)
- John Baskcomb
- Rossini, Terror of the Autons (1971)
- Timothy Bateson
- Binro, The Ribos Operation (1978)
- Lois Baxter
- Madam Lamia, The Androids of Tara (1978)
- Trevor Baxter
- Professor George Litefoot, The Talons of Weng-Chiang (1977)
- John Bay
- Earl of Leicester, The Crusade (1965)
- Geoffrey Bayldon
- Organon, The Creature from the Pit (1979)
- Terence Bayler
- Yendom, The Ark (1966)
- Major Barrington, The War Games (1969)
- Richard Beale
- Refusian (voice), The Ark (1966)
- Bat Masterson, The Gunfighters (1966)
- Broadcast and propaganda voices, The Macra Terror (1967)
- Minister of Ecology, The Green Death (1973)
- Robert Beatty
- General Cutler, The Tenth Planet (1966)
- Tony Beckley
- Harrison Chase, The Seeds of Doom (1976)
- Geoffrey Beevers
- Private Johnson, The Ambassadors of Death (1970)
- The Master, The Keeper of Traken (1981)
- Rachel Bell
- Priscilla P, The Happiness Patrol (1988)
- Lynda Bellingham
- Inquisitor, The Trial of a Time Lord (1986)
- Christopher Benjamin
- Sir Keith Gold, Inferno (1970)
- Henry Gordon Jago, The Talons of Weng-Chiang (1977)
- Colonel Hugh, "The Unicorn and the Wasp" (2008)
- Lucy Benjamin
- Young Nyssa, Mawdryn Undead (1983)
- Hywel Bennett
- Rynian, The Chase (1965)
- John Bennett
- General Finch, Invasion of the Dinosaurs (1974)
- Li H'sen Chang, The Talons of Weng-Chiang (1977)
- Alan Bennion
- Slaar, The Seeds of Death (1969)
- Izlyr, The Curse of Peladon (1972)
- Azaxyr, The Monster of Peladon (1974)
- Perry Benson
- Ice Cream Man, "The Eleventh Hour" (2010)
- Peter Benson
- Bor, Terminus (1983)
- Mark Benton
- Clive, "Rose" (2005)
- Thane Bettany
- Tarak, State of Decay (1980)
- Stewart Bevan
- Professor Cliff Jones, The Green Death (1973)
- Rodney Bewes
- Stien, Resurrection of the Daleks (1984)
- Michael Bilton
- Toligny, The Massacre of St Bartholomew's Eve (1966)
- Collins, Pyramids of Mars (1975)
- Time Lord, The Deadly Assassin (1976)
- Peter Birrel
- Draconian Prince, Frontier in Space (1973)
- Donald Bisset
- The Laird, The Highlanders (1966–1967)
- Honor Blackman
- Professor Sarah Lasky, Terror of the Vervoids (1986)
- Adam Blackwood
- Balazar, The Mysterious Planet (1986)
- Isla Blair
- Isabella, The King's Demons (1983)
- June Bland
- Berger, Earthshock (1982)
- Elizabeth Rawlinson, Battlefield (1989)
- Helen Blatch
- Voice, The Deadly Assassin (1976)
- Fabian, The Twin Dilemma (1984)
- Julian Bleach
- Davros, "The Stolen Earth" - "Journey's End" (2008)
- Brian Blessed
- King Yrcanos, The Trial of a Time Lord: Mindwarp (1986)
- Claire Bloom
- The Woman, The End of Time (2009–2010)
- Sean Blowers
- Zed, Dragonfire (1987)
- Martin Boddey
- Walker, The Sea Devils (1972)
- Philip Bond
- Ganatus, The Daleks (1964)
- Tomasz Borkowy
- Captain Sorin, The Curse of Fenric (1989)
- Miranda Borman
- Stellar, Dragonfire (1987)
- Christopher Bowen
- Mordred, Battlefield (1989)
- Lisa Bowerman
- Karra, Survival (1989)
- Roy Boyd
- Driscoll, The Hand of Fear (1976)
- Moya Brady
- Bridget, "Love & Monsters" (2006)
- John Brandon
- American Sergeant, The Tenth Planet (1966)
- Michael Brandon
- General Sanchez, "The Stolen Earth" (2008)
- Edward Brayshaw
- Colbert, The Reign of Terror (1964)
- The War Chief, The War Games (1969)
- Bernard Bresslaw
- Varga, The Ice Warriors (1967)
- Roger Brierley
- Trevor, The Daleks' Master Plan (1965)
- Voice of Drathro, The Mysterious Planet (1986)
- David Brierly
- Voice of K-9, The Creature from the Pit (1979) - Shada (Unfinished, 1980)
- Richard Briers
- Chief Caretaker / The Great Architect, Paradise Towers (1987)
- Nicholas Briggs
- Voice of the Nestene Consciousness, "Rose" (2005)
- Voices of the Daleks, "Dalek", "Bad Wolf" - "The Parting of the Ways" (2005), "Army of Ghosts" - "Doomsday" (2006), "Daleks in Manhattan" - "Evolution of the Daleks" (2007), "The Stolen Earth" - "Journey's End" (2008)
- Voices of the Cybermen, "Rise of the Cybermen" - "The Age of Steel", "Army of Ghosts" - "Doomsday" (2006), "The Next Doctor" (2008)
- Voices of the Judoon, "Smith and Jones" (2007), "The Stolen Earth" (2008)
- Eleanor Bron
- Art Gallery Visitor, City of Death (1979)
- Kara, Revelation of the Daleks (1985)
- Faith Brown
- Flast, Attack of the Cybermen (1985)
- June Brown
- Lady Eleanor, The Time Warrior (1974)
- Maurice Browning
- Karlton, The Daleks' Master Plan (1965)
- Angela Bruce
- Brigadier Winifred Bambera, Battlefield (1989)
- Brenda Bruce
- Tilda, Paradise Towers (1987)
- John Bryans
- Torvin, The Creature from the Pit (1979)
- Nicola Bryant
- Peri Brown, Planet of Fire (1984) - The Trial of a Time Lord: Mindwarp (1986)
- Sandra Bryant
- Kitty, The War Machines (1966)
- Chicki, The Macra Terror (1967)
- Jeremy Bulloch
- Tor, The Space Museum (1965)
- Hal the Archer, The Time Warrior (1973–1974)
- Hugh Burden
- Channing, Spearhead from Space (1970)
- Adrienne Burgess
- Veet, The Sun Makers (1977)
- Victoria Burgoyne
- Clare Keightley, Shada (Unfinished, 1980)
- MyAnna Buring
- Scooti Manista, "The Impossible Planet" (2006)
- Andrew Burt
- Valgard, Terminus (1983)
- Peter Butterworth
- The Meddling Monk, The Time Meddler (1965) & The Daleks' Master Plan (1966)
Read more about this topic: List Of Doctor Who Cast Members