Doctor Who
Cast Roles: Z
- Za (4 episodes, e.g. Derek Newark in An Unearthly Child: The Cave of Skulls)
- Zaadur (Abigail Thaw in Big Finish: Lords of the Red Planet)
- Zaal (4 episodes, e.g. Ronan Vibert in Big Finish: Fourth Doctor - The Syndicate Masterplan: Volume 2: Time's Assassin)
- Zabel (3 episodes, e.g. Rosanna Miles in Big Finish: The Story So Far Volume Two: Every Dark Thought)
- Zachary Cross Flane (2 episodes, e.g. Shaun Parkes in The Impossible Planet)
- Zadek (4 episodes, e.g. Simon Lack in The Androids of Tara: Part One)
- Zagreus (2 episodes, e.g. Jim Sangster in Big Finish: Omega)
- Zake (Terry Walsh in The Sontaran Experiment: Part One)
- Zakia Akhtar (4 episodes, e.g. Avita Jay in Big Finish: Stranded 1: Lost Property)
- Zane/Poker Dealer (8 episodes, e.g. David Blackwell in Big Finish: Wildthyme Reloaded: Comeback of the Scorchies)
- Zanith (Adrian Schiller in Big Finish: Time Works)
- Zanzibar (Nisha Nayar in Big Finish: Classic Doctors, New Monsters (Volume One): Harvest of the Sycorax)
- Zara (19 episodes, e.g. Laura Doddington in Big Finish: The Key 2 Time - Judgement of Isskar)
- Zarak (Andre Winterton in Time-Flight: Part Three)
- Zarbi Operator (33 episodes, e.g. Robert Jewell in The Web Planet)
- Zargo (4 episodes, e.g. William Lindsay in State of Decay: Part One)
- Zarodnix (2 episodes, e.g. Kenneth Colley in Big Finish: Sisters of the Flame)
- Zaroff (4 episodes, e.g. Joseph Furst in The Underwater Menace: Episode 1)
- Zaroff Guard (2 episodes, e.g. Alex Donald in The Underwater Menace: Episode 1)
- Zaroff's guard (5 episodes, e.g. Tony Handy in The Underwater Menace: Episode 2)
- Zastor (4 episodes, e.g. Edward Underdown in Meglos: Part One)
- Zastri (2 episodes, e.g. Ben Porter in )
- Zazzka (Roy Pattison in The Hand Of Fear: Part One)
- Zed (Sean Blowers in Dragonfire: Part One)
- Zeeb / Zeet (3 episodes, e.g. Pandora Clifford in )
- Zellin (Ian Gelder in Can You Hear Me?)
- Zendo / Emory (4 episodes, e.g. Raj Ghatak in Big Finish: The Time War - Series 3: State of Bliss)
- Zennox (Lucy Liemann in Big Finish: Last of the Cybermen)
- Zentos (2 episodes, e.g. Inigo Jackson in The Ark: The Steel Sky)
- Zephon (2 episodes, e.g. Julian Sherrier in The Daleks' Master Plan: Day of Armageddon)
- Zerelda / Charlotte Henries (4 episodes, e.g. Fiona Hampton in Big Finish: Diary of River Song: Series 5: The Bekdel Test)
- Zero (Hugh Fraser in Big Finish: Circular Time: Spring)
- Zeta (4 episodes, e.g. Josie White in Big Finish: Buried Memories: Pride of the Lampian)
- Zeuro (Ian Hallard in Big Finish: A Storm of Angels)
- Zeus (Ian McNeice in Big Finish: Immortal Beloved)
- Zeynep (Lisa Zahra in Big Finish: Fall to Earth)
- Zheng/Cyber Voices/Radio Announcer/ Citizen/Nurse (Nicholas Briggs in Big Finish: Spare Parts)
- Zhukov, Captain (Liam Cunningham in Cold War)
- Ziggy (3 episodes, e.g. Simon Hickson in Big Finish: Torchwood One: Before the Fall: New Girl)
- Zilda (3 episodes, e.g. Tania Rogers in The Robots of Death: Part One)
- Zimmerman (2 episodes, e.g. Philip Rham in Let's Kill Hitler)
- Ziv (Jo Woodcock in Big Finish: Starlight Robbery)
- Zixlyr (Nicholas Briggs in Big Finish: The Bride of Peladon)
- Zizmar (Alistair Lock in Big Finish: Red Dawn)
- Zoe (Mali Ann Rhys in Big Finish: Dead Man's Switch)
- Zoe Heriot (68 episodes, e.g. Wendy Padbury in The Wheel In Space: Episode 2)
- Zoe Heriot / Narrator (5 episodes, e.g. Wendy Padbury in Big Finish: The Second Doctor Volume 02: The Curator’s Egg)
- Zoe Heriot/Narrator (Wendy Padbury in Big Finish: The Isos Network)
- Zog (2 episodes, e.g. Stephanie Colburn in Stageshows: The Ultimate Adventure)
- Zogroth (Ned Porteous in The Star Beast)
- Zoldaz (Stuart Blake in State of Decay: Part Three)
- Zoltán Frid (ark Bonnar in Big Finish: The Labyrinth of Buda Castle)
- Zombie (21 episodes, e.g. Harry Damsell in The Unquiet Dead)
- Zombie King/Zombies (Billy Miller in Big Finish: Excelis Dawns)
- Zombies (David Darlington in Big Finish: Excelis Dawns)
- Zondal, the Ice Warrior (4 episodes, e.g. Roger Jones in The Ice Warriors: Three)
- Zor (Bill Mitchell in Doctor Who (Miscellaneous): Doctor Who and The Pescatons: Part Two)
- Zorelle (Shakedown) (Carole Ann Ford in Other Productions: Shakedown: Return of the Sontarans)
- Zorya / Tasja (Beth Chalmers in Big Finish: Nightmare Country)
- Zreeg (John Hopkinson in The Star Beast)
- Zsa Zsa Straus (4 episodes, e.g. Leonie Schliesing in Big Finish: Seventh Doctor New Adventures: Volume 1: The Trial of a Time Machine)
- Zu-Zana (2 episodes, e.g. Susannah Constantine in Bad Wolf)
- Zuko (Max Arthur in Planet of Fire: Part Two)
- Zy/Ogron 5/Barman (James Joyce in Big Finish: The Romance of Crime)
- Zygon (16 episodes, e.g. Keith Ashley in Terror of the Zygons: Part One)
- Zygon, Voice (3 episodes, e.g. Nicholas Briggs in The Day of The Doctor)