1980 (releases)

January

 * 3 January - DWM 13 was published.
 * 5 January - The Horns of Nimon Part Three debuted on BBC1.
 * 10 January - DWM 14 was published.
 * 12 January - The Horns of Nimon Part Four debuted on BBC1.
 * 17 January - DWM 15 was published.
 * 24 January - Doctor Who and the Underworld was first published.
 * 24 January - The American edition of Doctor Who and the Android Invasion was published by Pinnacle Books.
 * 24 January - DWM 16 was published.
 * 31 January - DWM 17 was published.

February

 * 7 February - DWM 18 was published.
 * 14 February - DWM 19 was published.
 * 21 February - Doctor Who and the Invasion of Time was first published.
 * 21 February - DWM 20 was published.
 * 28 February - DWM 21 was published.

March

 * 6 March - DWM 22 was published.
 * 13 March - DWM 23 was published.
 * 20 March - Doctor Who and the Stones of Blood was first published.
 * 20 March - Target Books reissued the 1976 non-fiction book The Making of Doctor Who.
 * 20 March - DWM 24 was published.
 * 27 March - DWM 25 was published.
 * The American edition of PROSE: Doctor Who and the Seeds of Doom was published by Pinnacle Books.

April

 * 3 April - DWM 26 was published.
 * 10 April - DWM 27 was published.
 * 17 April - DWM 28 was published.
 * 24 April - PROSE: Doctor Who and the Androids of Tara was first published.
 * 24 April - DWM 29 was published.

May

 * 1 May - DWM 30 was published.
 * 8 May - DWM 31 was published.
 * 15 May - DWM 32 was published.
 * 22 May - DWM 33 was published.
 * 26 May - PROSE: Doctor Who and the Power of Kroll was first published.
 * 29 May - DWM 34 was published.

June

 * 5 June - DWM 35 was published.
 * 12 June - DWM 36 was published.
 * 19 June - DWM 37 was published.
 * Summer - Doctor Who Magazine Summer Special 1980 was published.
 * 26 June - PROSE: Doctor Who and the Armageddon Factor was first published.
 * 26 June - PROSE: Junior Doctor Who and the Brain of Morbius was first published.
 * 26 June - DWM 38 was published.

July

 * 3 July - DWM 39 was published.
 * 10 July - DWM 40 was published. Doctor Who Weekly began publishing Doctor Who-universe comics.
 * 17 July - DWM 41 was published.
 * 24 July - DWM 42 was published.
 * 31 July - The final issue of Doctor Who Weekly (DWM 43) was published.

August

 * August - The Doctor Who Annual 1981 was published.
 * August - Doctor Who Magazine (DWM 44) began publishing as a monthly publication, initially changing its title from Doctor Who Weekly to Doctor Who: A Marvel Monthly. With a cover date indicating September 1980.
 * 21 August - PROSE: Doctor Who and the Keys of Marinus and PROSE: Doctor Who and the Nightmare of Eden were first published.
 * 30 August - The Leisure Hive Part One debuted on BBC1.

September

 * 6 September - The Leisure Hive Part Two debuted on BBC1.
 * 11 September - DWM 45 was published.
 * 13 September - The Leisure Hive Part Three debuted on BBC1.
 * 20 September - The Leisure Hive Part Four debuted on BBC1.
 * 27 September - Meglos Part One debuted on BBC1.

October

 * 4 October - Meglos Part Two debuted on BBC1.
 * 9 October - DWM 46 was published.
 * 11 October - Meglos Part Three debuted on BBC1.
 * 16 October - PROSE: Doctor Who and the Horns of Nimon was first published.
 * 18 October - Meglos Part Four debuted on BBC1.
 * 20 October - The Adventures of K9, a children's book series by David Martin, was published by Sparrow Books.
 * 25 October - Full Circle Part One debuted on BBC1.

November

 * 1 November - Full Circle Part Two debuted on BBC1.
 * 8 November - Full Circle Part Three debuted on BBC1.
 * 13 November - PROSE: Junior Doctor Who and the Brain of Morbius was published in paperback.
 * 13 November - DWM 47 was released.
 * 15 November - Full Circle Part Four debuted on BBC1.
 * 22 November - State of Decay Part One debuted on BBC1.
 * 29 November - State of Decay Part Two debuted on BBC1.

December

 * December - Marvel Premiere issue 57 was published by Marvel Comics in the United States.
 * December - DWM 48 was released.
 * 4 December - PROSE: Doctor Who and the Monster of Peladon was first published.
 * 6 December - State of Decay Part Three debuted on BBC1.
 * 13 December - State of Decay Part Four debuted on BBC1.

Unknown dates

 * Unknown - REF: A Day with a TV Producer, a non-fiction work profiling John Nathan-Turner and the production of The Leisure Hive, was published.