1974 (releases)

January

 * 5 January - The Time Warrior Part Four debuted on BBC1
 * 5 January - The fourth part of COMIC: The Amateur was released.
 * 12 January - Invasion of the Dinosaurs Part One debuted on BBC1.
 * 12 January - The fifth part of COMIC: The Amateur was released.
 * 17 January - Target Books released Doctor Who and the Auton Invasion by Terrance Dicks and Doctor Who and the Cave-Monsters by Malcolm Hulke.
 * 19 January - Invasion of the Dinosaurs Part Two debuted on BBC1.
 * 19 January - The sixth part of COMIC: The Amateur was released.
 * 26 January - Invasion of the Dinosaurs Part Three debuted on BBC1.
 * 26 January - The seventh and final part of COMIC: The Amateur was released.

February

 * 2 February - Invasion of the Dinosaurs Part Four debuted on BBC1.
 * 2 February - The first part of COMIC: The Disintegrator was released.
 * 9 February - Invasion of the Dinosaurs Part Five debuted on BBC1.
 * 9 February - The second part of COMIC: The Disintegrator was released.
 * 16 February - Invasion of the Dinosaurs Part Six debuted on BBC1.
 * 16 February - The third part of COMIC: The Disintegrator was released.
 * 23 February - Death to the Daleks Part One debuted on BBC1.
 * 23 February - The fourth part of COMIC: The Disintegrator was released.

March

 * 2 March - Death to the Daleks Part Two debuted on BBC1.
 * 2 March - The fifth and final part of COMIC: The Disintegrator was released.
 * 9 March - Death to the Daleks Part Three debuted on BBC1.
 * 9 March - The first part of COMIC: The DisintegratorIs Anyone There? was released.
 * 16 March - Death to the Daleks Part Four debuted on BBC1.
 * 16 March - The second part of COMIC: The DisintegratorIs Anyone There? was released.
 * 23 March - The Monster of Peladon Part One debuted on BBC1.
 * 23 March - The third part of COMIC: The DisintegratorIs Anyone There? was released.
 * 27 March - Doctor Who and the Doomsday Weapon and Doctor Who and the Day of the Daleks were first published by Target Books.
 * 30 March - The Monster of Peladon Part Two debuted on BBC1.
 * 30 March - The fourth part of COMIC: The DisintegratorIs Anyone There? was released.

April

 * 6 April - The Monster of Peladon Part Three debuted on BBC1.
 * 6 April - The fifth part of COMIC: The DisintegratorIs Anyone There? was released.
 * 12 April - The Doctor Who Exhibition at Longleat House was opened.
 * 13 April - The Monster of Peladon Part Four debuted on BBC1.
 * 13 April - The sixth part of COMIC: The DisintegratorIs Anyone There? was released.
 * 14 April - The Blackpool Doctor Who Exhibition was opened.
 * 20 April - The Monster of Peladon Part Five debuted on BBC1.
 * 20 April - The seventh part of COMIC: The DisintegratorIs Anyone There? was released.
 * 27 April - The Monster of Peladon Part Six debuted on BBC1.
 * 27 April - The eighth part of COMIC: The DisintegratorIs Anyone There? was released.

May

 * 4 May - Planet of the Spiders Part One debuted on BBC1.
 * 4 May - The ninth part of COMIC: The DisintegratorIs Anyone There? was released.
 * 11 May - Planet of the Spiders Part Two debuted on BBC1.
 * 11 May - The tenth and final part of COMIC: The DisintegratorIs Anyone There? was released.
 * 18 May - Planet of the Spiders Part Three debuted on BBC1.
 * 18 May - The first part of COMIC: The DisintegratorSize Control was released.
 * 25 May - Planet of the Spiders Part Four debuted on BBC1.
 * 25 May - The second part of COMIC: Size Control was released.

June

 * 1 June - Planet of the Spiders Part Five debuted on BBC1.
 * 1 June - The third part of COMIC: Size Control was released.
 * 8 June - Planet of the Spiders Part Six debuted on BBC1.
 * 8 June - The fourth part of COMIC: Size Control was released.
 * 15 June - The fifth part of COMIC: Size Control was released.
 * 22 June - The sixth part of COMIC: Size Control was released.
 * 29 June - The seventh and final part of COMIC: Size Control was released.

July

 * 6 July - The first part of COMIC: The Magician was released.
 * 13 July - The second part of COMIC: The Magician was released.
 * 20 July - The third part of COMIC: The Magician was released.
 * 27 July - The fourth part of COMIC: The Magician was released.

August

 * 3 August - The fifth part of COMIC: The Magician was released.
 * 10 August - The sixth part of COMIC: The Magician was released.
 * 17 August - The seventh and final part of COMIC: The Magician was released.
 * 24 August - The first part of COMIC: The Metal-Eaters was released.
 * 31 August - The second part of COMIC: The Metal-Eaters was released.

September

 * September - The Doctor Who Annual 1975 was published.
 * 7 September - The third part of COMIC: The Metal-Eaters was released.
 * 14 September - The fourth part of COMIC: The Metal-Eaters was released.
 * 21 September - The fifth part of COMIC: The Metal-Eaters was released.
 * 28 September - The sixth part of COMIC: The Metal-Eaters was released.

October

 * 5 October - The seventh and last part of COMIC: The Metal-Eaters was released.
 * 12 October - The first part of COMIC: Lords of the Ether was released.
 * 17 October - Doctor Who and the Dæmons and Doctor Who and the Sea-Devils were first published by Target Books.
 * 19 October - The second part of COMIC: Lords of the Ether was released.
 * 26 October - The third part of COMIC: Lords of the Ether was released.

November

 * 2 November - The fourth part of COMIC: Lords of the Ether was released.
 * 9 November - The fifth part of COMIC: Lords of the Ether was released.
 * 16 November - The sixth part of COMIC: Lords of the Ether was released.
 * 21 November - Doctor Who and the Abominable Snowmen was first published by Target Books.
 * 23 November - The seventh part of COMIC: Lords of the Ether was released.
 * 30 November - The eighth and final part of COMIC: Lords of the Ether was released.

December

 * 7 December - The first part of COMIC: The Wanderers was released.
 * 14 December - The second part of COMIC: The Wanderers was released.
 * 16 December - The stage play Doctor Who and the Daleks in Seven Keys to Doomsday premiered at the Adelphi Theatre.
 * 21 December - The third part of COMIC: The Wanderers was released.
 * 28 December - Robot Part One debuted on BBC1.
 * 28 December - The fourth part of COMIC: The Wanderers was released.

Unknown dates

 * Doctor Who Holiday Special 1974 was relased by Polystyle.
 * The 1974 TV Comic Holiday, featuring the story Signal S.O.S., was released
 * The 1974 Countdown Annual, featuring the story The Hungry Planet, was released.