First Doctor/Appearances

The following is a comprehensive but not definitive list of the First Doctor's appearances.

Season 1

 * The Pilot Episode (non-canonical; introduction)
 * An Unearthly Child (introduction)
 * The Daleks
 * The Edge of Destruction
 * Marco Polo
 * The Keys of Marinus
 * The Aztecs
 * The Sensorites
 * The Reign of Terror

Season 2

 * Planet of Giants
 * The Dalek Invasion of Earth
 * The Rescue
 * The Romans
 * The Web Planet
 * The Crusade
 * The Space Museum
 * The Chase
 * The Time Meddler

Season 3

 * Galaxy 4
 * The Myth Makers
 * The Daleks' Master Plan
 * The Massacre of St Bartholomew's Eve
 * The Ark
 * The Celestial Toymaker (largely absent)
 * The Gunfighters
 * The Savages
 * The War Machines

Season 4

 * The Smugglers
 * The Tenth Planet (largely absent; regenerates)
 * The Power of the Daleks (cameo)

Season 9

 * Day of the Daleks (flashback; archival photo)

Season 10

 * The Three Doctors (extended cameo)

Season 13

 * The Brain of Morbius (flashback: archival photo)

Season 19

 * Earthshock (flashback; archival material)

Season 20

 * Mawdryn Undead (flashback; archival footage)
 * The Five Doctors (also, archival material)
 * Resurrection of the Daleks (flashback; archival material)

Doctor Who Mini-episode

 * Dimensions in Time (cameo; not played by live actor; not regarded as canon)

Virgin New Adventures

 * Timewyrm: Revelation (ghost/mental projection)
 * Nightshade (flashback)
 * All-Consuming Fire (cameo)
 * Lungbarrow (flashback)

Virgin Missing Adventures

 * The Sorcerer's Apprentice
 * Venusian Lullaby
 * The Plotters
 * The Empire of Glass
 * The Man in the Velvet Mask

BBC Eighth Doctor Adventures

 * The Eight Doctors

BBC Past Doctor Adventures

 * The Witch Hunters
 * City at World's End
 * Byzantium!
 * The Eleventh Tiger
 * Salvation
 * Bunker Soldiers
 * Ten Little Aliens
 * The Time Travellers

Telos Doctor Who Novellas

 * Time and Relative
 * Frayed

Early Comic Strip Stories

 * The Klepton Parasites
 * The Therovian Quest
 * The Hijackers of Thrax
 * On the Web Planet
 * The Gyros Injustice
 * Challenge of the Piper
 * Moon Landing
 * Time in Reverse
 * Lizardworld
 * The Ordeals of Demeter
 * Enter: The Go-Ray
 * Shark Bait
 * A Christmas Story
 * The Didus Expedition
 * Space Station Z-7
 * Plague of the Black Scorpi
 * The Trodos Tyranny
 * The Secret of Gemino
 * The Haunted Planet
 * The Hunters of Zerox
 * The Underwater Robot
 * Return of the Trods
 * The Galaxy Games
 * The Experimenters
 * Prisoners of Gritog
 * Guests of King Neptune
 * The Gaze of the Gorgon
 * Prisoners of the Kleptons
 * The Caterpillar Men
 * Deadly Vessel
 * Kingdom of the Animals

Later Comic Strip Stories

 * Timeslip (regressed from Fourth Doctor to earlier self)
 * Planet of the Dead (impersonation)
 * Flashback (virtual reality "time travel")
 * Food for Thought
 * Are You Listening?
 * A Religious Experience
 * Operation Proteus
 * Happy Deathday (virtual reality?)