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 Assassin
 * 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 Key to Time)

 * 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)

Specials

 * The Next Doctor (archive material)

Series 3

 * The Mad Woman in the Attic (flashback, archive)

Other

 * Prime Computer TV commercial series, Australia. (Non canonical)

Big Finish Doctor Who Audio Dramas

 * The Kingmaker (cameo)

The Companion Chronicles

 * The Beautiful People
 * The Catalyst
 * The Stealers from Saiph
 * Empathy Games
 * The Pyralis Effect
 * The Time Vampire

BBC Audio

 * Hornets' Nest (announced)

Other

 * The Time Machine
 * Doctor Who and the Pescatons

Target Novelisations

 * All televised Fourth Doctor stories have been adapted as novels, with the exception of The Pirate Planet, City of Death, Shada, Dimensions in Time
 * The Pescatons - novelisation of 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)
 * The Dying Days (cameo)

Virgin Bernice Summerfield New Adventures

 * Beige Planet Mars (cameo)

BBC Eighth Doctor Adventures

 * The Eight Doctors (cameo)

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
 * Wonderland (cameo)

Doctor Who Annuals
Doctor Who Annual 1976
 * A New Life
 * The Hospitality on Hankus
 * The Sinister Sponge
 * Avast There!
 * The Mission

Doctor Who Annual 1977
 * War on Aquatica
 * Cyclone Terror
 * The Time Snatch
 * The Eye-Spiders of Pergross
 * Detour to Diamedes
 * Double Trouble
 * Secret of the Bald Planet

Doctor Who Annual 1978
 * The Sleeping Beast
 * The Sands of Tymus
 * A New Life
 * The Sea of Faces

Doctor Who Annual 1979
 * Famine on Planet X
 * The Planet of Dust
 * Terror on Tantalogus
 * Flashback
 * The Crocodiles from the Mist

Doctor Who Annual 1980
 * X-Rani and the Ugly Mutants
 * Light Fantastic
 * Reluctant Warriors
 * Return of the Electrids
 * The Sleeping Guardians

Doctor Who Annual 1981
 * Colony of Death
 * Alien Mind Games
 * A Midsummer's Nightmare
 * The Voton Terror
 * Sweet Flower of Uthe

Doctor Who Annual 1982
 * Inter-Galactic Cat
 * Conundrum
 * Planet of Paradise
 * Just a Small Problem

The Amazing World of Doctor Who

 * The Vampires of Crellium
 * On the Slippery Trail

Daily Mirror

 * Doctor Who and the Hell Planet

TV Comic

 * The Magic Box (TVC Holiday Special 1975)
 * Which Way Out? (TVC Holiday Special 1976)
 * Master of the Blackhole (TVC Annual 1977)
 * Milena (TVC Annual 1979)

Doctor Who Magazine

 * The Two-Timer
 * Stowaway
 * Evil Egg
 * Sands of Time
 * Mind-Jump
 * The Hole Truth
 * Breakdown
 * Pathfinders
 * The Final Analysis

Brief Encounters

 * The Stranger, The Writer, His Wife and the Mixed Metaphor (DWM 196)
 * Down to Earth (DWM Issue 208)
 * Farewells (DWYB 1993)
 * The Changeling Years (DWYB 1994)
 * The Beast Inside (DWYB 1995)

Virgin Decalogs and Short Trips

 * The Duke of Dominoes (Decalog)
 * Scarab of Death (Decalog)
 * Crimson Dawn (Decalog 2)
 * People of the Trees (Decalog 2)
 * UNITed We Fall (Decalog 3)
 * Timevault (Decalog 3)
 * Old Flames (Short Trips)
 * Glass (Short Trips)
 * Rights (Short Trips)
 * One Bad Apple (More Short Trips)
 * Return of the Spiders (More Short Trips)
 * Special Occasions: 1. The Not-So-Sinister Sponge (Short Trips and Side Steps)
 * The Android Maker of Calderon IV (Short Trips and Side Steps)
 * Special Occasions: 2. Do You Love Anyone Enough? (Short Trips and Side Steps)
 * Special Occasions: 3. Better Watch Out, Better Take Care (Short Trips and Side Steps)
 * Special Occasions: 4. Playing with Toys (Short Trips and Side Steps)
 * I Was a Monster!!! (Zodiac)
 * The Lying Old Witch in the Wardrobe (Companions)
 * The Fear (A Universe of Terrors)
 * Mauritz (A Universe of Terrors)
 * The Brain of Socrates (The Muses)
 * The Glass Princess (The Muses)
 * Doing Time (Steel Skies)
 * O, Darkness (Steel Skies)
 * Eternity (Steel Skies)
 * All Done with Mirrors (Past Tense)
 * To Kill a Nandi Bear (Past Tense)
 * The Northern Heights (Life Science)
 * The Destroyers (Life Science)
 * The Bushranger's Story (Repercussions)
 * The Republican's Story (Repercussions)
 * Categorical Imperative (Monsters)
 * Observer Effect (2040)
 * The Baron Wastes (2040)
 * The Little Things (A Christmas Treasury)
 * The Clanging Chimes of Doom (A Christmas Treasury)
 * Present Tense (A Christmas Treasury)
 * It's a Lovely Day Tomorrow (A Christmas Treasury)
 * UNIT Christmas Parties: Ships That Pass (A Christmas Treasury)
 * Suitors, Inc. (Seven Deadly Sins)
 * The Sooner the Better (A Day in the Life)
 * The Last Broadcast (A Day in the Life)
 * Earth (The Solar System)
 * The Prodigal Sun (The History of Christmas)
 * Ode to Joy (The History of Christmas)
 * Callahuanca (The History of Christmas)
 * The Very Last Picture Show (Farewells)
 * Into the Silent Land (Farewells)
 * Direct Action (The Centenarian)
 * Checkpoint (The Centenarian)
 * Life from Lifelessness (Destination Prague)
 * The Dogs of War (Destination Prague)
 * Nanomorphosis (Destination Prague)
 * The End of Now (Destination Prague)
 * The Dragons of Prague (Destination Prague)
 * Attachments (Snapshots)
 * My Hero (Snapshots)
 * Plight of the Monkrah (Snapshots)
 * In Case of Emergencies (Snapshots)
 * Puppeteer (Snapshots)
 * The Glarn Strategy (Snapshots)
 * The Nobility of Faith (The Ghosts of Christmas)
 * Dear Great Uncle Peter (The Ghosts of Christmas)
 * All Snug in Their Beds (The Ghosts of Christmas)
 * Machine Time (Defining Patterns)
 * Mutiny (Defining Patterns; guest appearance)
 * Stanley (Defining Patterns)
 * Good Queen, Bad Queen, I Queen, You Queen (The Quality of Leadership)
 * Only Connect (Transmissions)
 * Breadcrumbs (Transmissions)
 * Child's Play (How The Doctor Changed My Life)
 * The Last Thing You Ever See (How The Doctor Changed My Life)
 * The Monster in the Wardrobe (How The Doctor Changed My Life)
 * Those Left Behind (How The Doctor Changed My Life)
 * Time Shear (How The Doctor Changed My Life)
 * Insider Dealing (How The Doctor Changed My Life)
 * Planet of the Elves (Christmas Around the World)
 * Christmas Every Day (Christmas Around the World)
 * The Doctor's Cross Word (Christmas Around the World)
 * Autaia Pipipi Pia (Christmas Around the World)
 * Conscription (Christmas Around the World)
 * Shamans (Indefinable Magic)
 * Hello Goodbye (Indefinable Magic)
 * Blessed Are the Peacemakers (Indefinable Magic)

Interactive novels

 * The Vortex Crystal

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

TV Comic Special Issues

 * The Sea Devil

Doctor Who Annual
Doctor Who Annual 1976
 * The Psychic Jungle
 * Neuronic Nightmare

Doctor Who Annual 1977
 * The Body Snatcher
 * Menace on Metalupiter

Doctor Who Annual 1978
 * The Rival Robots
 * The Traitor

Doctor Who Annual 1979
 * The Power
 * Emsone's Castle

Doctor Who Annual 1980
 * Terror on Xaboi
 * The Weapon

Doctor Who Annual 1981
 * Every Dog Has His Day

Doctor Who Annual 1982
 * Plague World

Doctor Who Magazine

 * The Iron Legion
 * City of the Damned
 * Timeslip
 * The Star Beast
 * The Dogs of Doom
 * The Time Witch
 * Dragon's Claw
 * The Collector
 * Dreamers of Death
 * The Life Bringer
 * War of the Words
 * Spider-God
 * The Deal
 * End of the Line
 * The Free-Fall Warriors
 * Junkyard Demon
 * The Neutron Knights
 * Party Animals (cameo)
 * Time & Time Again
 * Victims
 * Black Destiny
 * Death to the Doctor! (flashback)
 * Also: TV Action! (alternate universe version in which Tom Baker appears as himself)

Doctor Who Magazine back-up comics stories

 * K-9's Finest Hour
 * Touchdown on Deneb-7

Doctor Who Yearbook

 * Rest and Re-Creation
 * The Naked Flame
 * Star Beast II
 * Junkyard Demon II

Doctor Who Summer Special

 * The Seventh Segment

Doctor Who (IDW)

 * The Forgotten
 * The Time Machination (cameo)