1971 (releases)

January

 * 2 January - Episode One of Terror of the Autons debuted on BBC1, the first appearance of The Master and Jo Grant.
 * 2 January - The third part of The Kingdom Builders was first published in TV Comic.
 * 9 January - Episode Two of Terror of the Autons debuted on BBC1.
 * 9 January - The fourth part of The Kingdom Builders was first published in TV Comic.
 * 16 January - Episode Three of Terror of the Autons debuted on BBC1.
 * 16 January - The fifth part of The Kingdom Builders was first published in TV Comic.
 * 23 January - Episode Four of Terror of the Autons debuted on BBC1.
 * 23 January - The sixth part of The Kingdom Builders was first published in TV Comic.
 * 30 January - Episode One of The Mind of Evil debuted on BBC1.
 * 30 January - The seventh part of The Kingdom Builders was first published in TV Comic.

February

 * 6 February - Episode Two of The Mind of Evil debuted on BBC1.
 * 6 February - The eighth and final part of The Kingdom Builders was first published in TV Comic.
 * 13 February - Episode Three of The Mind of Evil debuted on BBC1.
 * 20 February - Episode Four of The Mind of Evil debuted on BBC1.
 * 20 February - The Polystyle comic strip moved from TV Comic to Countdown with the first part of Gemini Plan.
 * 27 February - Episode Five of The Mind of Evil debuted on BBC1.
 * 27 February - The second part of Gemini Plan was first published in Countdown.

March

 * 6 March - Episode Six of The Mind of Evil debuted on BBC1.
 * 6 March - The third part of Gemini Plan was first published in Countdown.
 * 13 March - Episode One of The Claws of Axos debuted on BBC1.
 * 13 March - The fourth part of Gemini Plan was first published in Countdown.
 * 20 March - Episode Two of The Claws of Axos debuted on BBC1.
 * 20 March - The fifth and final part of Gemini Plan was first published in Countdown.
 * 27 March - Episode Three of The Claws of Axos debuted on BBC1.
 * 27 March - The first part of Timebenders was first published in Countdown.

April

 * 3 April - Episode Four of The Claws of Axos debuted on BBC1.
 * 3 April - The second part of Timebenders was first published in Countdown.
 * 10 April - Episode One of Colony in Space debuted on BBC1.
 * 10 April - The third part of Timebenders was first published in Countdown.
 * 17 April - Episode Two of Colony in Space debuted on BBC1.
 * 17 April - The fourth part of Timebenders was first published in Countdown.
 * 24 April - Episode Three of Colony in Space debuted on BBC1.
 * 24 April - The fifth part of Timebenders was first published in Countdown.

May

 * 1 May - Episode Four of Colony in Space debuted on BBC1.
 * 1 May - The sixth part of Timebenders was first published in Countdown.
 * 8 May - Episode Five of Colony in Space debuted on BBC1.
 * 8 May - The seventh part of Timebenders was first published in Countdown.
 * 15 May - Episode Six of Colony in Space debuted on BBC1.
 * 15 May - The eighth and final part of Timebenders was first published in Countdown.
 * 22 May - Episode One of The Dæmons debuted on BBC1.
 * 29 May - Episode Two of The Dæmons debuted on BBC1.
 * 29 May - The first part of The Vogan Slaves was first published in Countdown.

June

 * 5 June - Episode Three of The Dæmons debuted on BBC1.
 * 5 June - The second part of The Vogan Slaves was first published in Countdown.
 * 12 June - Episode Four of The Dæmons debuted on BBC1.
 * 12 June - The third part of The Vogan Slaves was first published in Countdown.
 * 19 June - Episode Five of The Dæmons debuted on BBC1.
 * 19 June - The fourth part of The Vogan Slaves was first published in Countdown.
 * 26 June - The fifth part of The Vogan Slaves was first published in Countdown.

July

 * 3 July - The sixth part of The Vogan Slaves was first published in Countdown.
 * 10 July - The seventh part of The Vogan Slaves was first published in Countdown.
 * 17 July - The eighth and final part of The Vogan Slaves was first published in Countdown.
 * 24 July - The first part of The Celluloid Midas was first published in Countdown.
 * 31 July - The second part of The Celluloid Midas was first published in Countdown.

August

 * 7 August - The third part of The Celluloid Midas was first published in Countdown.
 * 14 August - The fourth part of The Celluloid Midas was first published in Countdown.
 * 21 August - The fifth part of The Celluloid Midas was first published in Countdown.
 * 28 August - The sixth part of The Celluloid Midas was first published in Countdown.

September

 * 4 September - The seventh part of The Celluloid Midas was first published in Countdown.
 * 11 September - The eighth part of The Celluloid Midas was first published in Countdown.
 * 18 September - The ninth part of  The Celluloid Midas  was first published in Countdown.
 * 25 September - The tenth and final part of The Celluloid Midas was first published in Countdown.

October

 * 2 October - The first part of Backtime was first published in Countdown.
 * 9 October - The second part of Backtime was first published in Countdown.
 * 16 October - The third part of Backtime was first published in Countdown.
 * 23 October - The fourth part of Backtime was first published in Countdown.
 * 30 October - The fifth part of Backtime was first published in Countdown.

November

 * 6 November - The sixth part of Backtime was first published in Countdown.
 * 13 November - The seventh and final part of Backtime was first published in Countdown.
 * 20 November - The first part of The Eternal Present was first published in Countdown.
 * 27 November - The second part of The Eternal Present was first published in Countdown.

December

 * 4 December - The third part of The Eternal Present was first published in Countdown.
 * 11 December - The fourth part of The Eternal Present was first published in Countdown.
 * 18 December - The fifth part of The Eternal Present was first published in Countdown.
 * 25 December - The sixth part of The Eternal Present was first published in Countdown.

Unknown dates

 * The 1971 Countdown Holiday Special, featuring the story The Thing from Outer Space, was released.
 * The 1971 TV Comics Annual, featuring the stories Castaway and Levitation, was released
 * The story Doctor Who Fights Masterplan "Q" was released in fifteen parts through a promotion with Nestlé on the back of chocolate wrappers.