Fourth Doctor/Appearances

A comprehensive but by no means complete list of appearances by the Fourth Doctor.

Season 11

 * Planet of the Spiders (cameo; introduction)

Season 12

 * Robot
 * The Ark in Space
 * The Sontaran Experiment
 * Genesis of the Daleks
 * Revenge of the Cybermen

Season 13

 * Terror of the Zygons
 * Planet of Evil
 * Pyramids of Mars
 * The Android Invasion
 * The Brain of Morbius
 * The Seeds of Doom

Season 14

 * The Masque of Mandragora
 * The Hand of Fear
 * The Deadly Assasin
 * The Face of Evil
 * The Robots of Death
 * The Talons of Weng-Chiang

Season 15

 * Horror of Fang Rock
 * The Invisible Enemy
 * Image of the Fendahl
 * The Sun Makers
 * Underworld
 * The Invasion of Time

Season 16

 * The Ribos Operation
 * The Pirate Planet
 * The Stones of Blood
 * The Androids of Tara
 * The Power of Kroll
 * The Armageddon Factor

Season 17

 * Destiny of the Daleks
 * City of Death
 * The Creature from the Pit
 * Nightmare of Eden
 * The Horns of Nimon
 * Shada (incomplete; never broadcast)

Season 18

 * The Leisure Hive
 * Meglos
 * Full Circle
 * State of Decay
 * Warriors' Gate
 * The Keeper of Traken
 * Logopolis (regenerates)

Season 19

 * Castrovalva (reprise of previous story)
 * Earthshock (flashback; archival footage)

Season 20

 * Mawdryn Undead (flashback; archival footage)
 * The Five Doctors (cameo using un-aired archival footage from Shada)

Season 21

 * Resurrection of the Daleks (flashback; archival footage)

Doctor Who Mini-episode

 * Dimensions in Time (not generally regarded as canonical)

Big Finish - Doctor Who Audio Dramas

 * The Kingmaker (cameo)

Other

 * Expedition Earth: The Time Machine
 * Doctor Who and the Pescatons

Virgin Missing Adventures

 * Evolution
 * The Romance of Crime
 * System Shock
 * Managra
 * The English Way of Death
 * The Shadow of Weng-Chiang
 * A Device of Death
 * The Well-Mannered War

Virgin New Adventures

 * Timewyrm: Revelation (ghost/mental projection)

BBC Past Doctor Adventures

 * Eye of Heaven
 * Last Man Running
 * Millennium Shock
 * Corpse Marker
 * Tomb of Valdemar
 * Heart of TARDIS
 * Festival of Death
 * Asylum
 * Psi-ence Fiction
 * Drift
 * Wolfsbane
 * Match of the Day

Telos Doctor Who Novellas

 * Ghost Ship

Early Comic strip stories

 * Death Flower
 * Return of the Daleks
 * The Wreckers
 * The Emperor's Spy
 * The Sinister Sea
 * Woden's Warriors
 * The Space Ghost
 * The Dalek Revenge
 * Virus
 * Treasure Trail
 * Hubert's Folly
 * Counter-Rotation
 * Mind Snatch
 * The Hoaxers
 * The Tansbury Experiment
 * The Mutant Strain
 * Double Trouble
 * Dredger
 * Jackals of Space
 * The False Planet
 * The Fire Feeders
 * Kling Dynasty
 * The Sky Warrior
 * The Orb
 * The Mutants
 * The Devil's Mouth
 * The Aqua-City
 * The Snow Devils
 * The Space Garden
 * The Eerie Manor
 * Guardian of the Tomb
 * The Image Makers

Doctor Who Magazine

 * The Iron Legion
 * City of the Damned
 * K9's Finest Hour
 * The Star Beast
 * The Dogs of Doom
 * The Time Witch
 * Dragon's Claw
 * The Collector
 * Dreamers of Death
 * Starbeast II
 * The Life Bringer
 * War of the Words
 * Spider-God
 * The Deal
 * End of the Line
 * The Freefall Warriors
 * Junkyard Demon
 * The Neutron Knights