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

Doctor Who Annuals

 * A New Life
 * The Hospitality on Hankus
 * The Sinister Sponge
 * Avast There!
 * The Mission
 * War on Aquatica
 * Cyclone Terror
 * The Time Snatch
 * The Eye-Spiders of Pergross
 * Detour to Diamedes
 * Double Trouble
 * Secret of the Bald Planet
 * The Sleeping Beast
 * The Sands of Tymus
 * A New Life
 * The Sea of Faces
 * Famine on Planet X
 * The Planet of Dust
 * Terror on Tantalogus
 * Flashback
 * Crocodiles from the Mist
 * X-Rani and the Ugly Mutants
 * Light Fantastic
 * Reluctant Warriors
 * Return of the Electrids
 * The Sleeping Guardians
 * Colony of Death
 * Alien Mind Games
 * A Midsummer's Nightmare
 * The Voltan Terror
 * Sweet Flower of Uthe
 * Intergalactic Cat
 * Conundrum
 * Planet of Paradise
 * Just a Small Problem

Brief Encounters

 * The Stranger, the Writer, his Wife and the Mixed Metaphor
 * The Beast Inside

Decalog and Short Trips

 * To Kill a Nandi Bear
 * The Last Broadcast
 * The Republican's Story
 * Rights
 * All Done with Mirrors
 * Scarab of Death
 * UNIT Christmas Parties: Ships That Pass
 * The Duke of Dominoes
 * Categorical Imperative
 * Observer Effect
 * Eternity
 * The Android Maker of Calderon IV
 * Old Flames
 * Ode to Joy
 * UNITed We Fall
 * The Northern Heights
 * The Baron Wastes
 * Earth
 * Callahuanca
 * Direct Action
 * One Bad Apple
 * The Bushranger's Story
 * It's a Lovely Day Tomorrow
 * The Sooner the Better
 * The Prodigal Sun
 * The Very Last Picture Show
 * The Brain of Socrates
 * The Destroyers
 * Crimson Dawn
 * People of the Trees
 * Timevault
 * The Fear
 * Suitors, Inc.
 * The Lying Old Witch in the Wardrobe
 * Return of the Spiders
 * Special Occasions: 1. The Not-So-Sinister Sponge
 * Special Occasions: 2. Do You Love Anyone Enough?
 * The Little Things
 * Special Occasions: 3. Better Watch Out, Better Take Care
 * Special Occasions: 4. Playing with Toys
 * The Clanging Chimes of Doom
 * Present Tense
 * Glass
 * Doing Time
 * Into the Silent Land
 * I Was a Monster!!!
 * Checkpoint
 * O, Darkness
 * Mauritz

TV Comic

 * 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 Annual

 * The Psychic Jungle
 * Neuronic Nightmare
 * The Body Snatcher
 * Menace on Metalupiter
 * The Rival Robots
 * The Traitor
 * The Power
 * Emsome's Castle

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