1989 (releases)

January

 * January - DWM 145 was released.
 * 4 January - The Greatest Show in the Galaxy Part Four debuted on BBC1.
 * 19 January - PROSE: Doctor Who - Delta and the Bannermen was first published.
 * 19 January - REF: The Doctor Who File was published in paperback.

February

 * 9 February - DWM 146 was released.
 * 16 February - PROSE: Doctor Who - The War Machines was first published.

March

 * 9 March - DWM 147 was released.
 * 16 March - PROSE: Doctor Who - Dragonfire was first published.
 * 16 March - Two Doctor Who Classics reprint volumes were published: PROSE: The Dæmons / The Time Monster and PROSE: The Mind of Evil / The Claws of Axos.

April

 * April - REF: Doctor Who: The Time-Travellers' Guide was published in paperback.
 * 13 April - DWM 148 was released.
 * 20 April - PROSE: Doctor Who - Attack of the Cybermen was first published.

May

 * 11 May - DWM 149 was released.
 * 18 May - PROSE: Doctor Who - The Nightmare Fair was first published.
 * 18 May - Target Books published two final Doctor Who Classics reprint volumes before abandoning the venture: PROSE: The Face of Evil/The Sunmakers and PROSE: The Seeds of Doom/The Deadly Assassin.
 * 26 May - Doctor Who: Voyager was published by Marvel Comics.

June

 * 8 June - DWM 150 was released.
 * 15 June - PROSE: Doctor Who - Mindwarp was first published.

July

 * July - DWM 151 was released.
 * 20 July - PROSE: Doctor Who - The Chase was first published.

August

 * 10 August - DWM 152 was released.
 * 17 August - PROSE: Doctor Who - The Ultimate Evil was first published.
 * 29 August - The second volume of Doctor Who: The Scripts was published: The Tomb of the Cybermen.

September

 * 6 September - Battlefield Part One debuted on BBC1.
 * 13 September - Battlefield Part Two debuted on BBC1.
 * 14 September - DWM 153 was released.
 * 20 September - Battlefield Part Three debuted on BBC1.
 * 21 September - PROSE: Doctor Who - Mission to the Unknown was first published.
 * 27 September - Battlefield Part Four debuted on BBC1.
 * The Ultimate Interview: Colin Baker talks with David Banks was first released on cassette by Silver Fist Productions.

October

 * October - Doctor Who Magazine Tenth Anniversary Special was published.
 * 4 October - Ghost Light Part One debuted on BBC1.
 * 7 October - The First issue of The Incredible Hulk Presents was published, featuring the COMIC: Once in a Lifetime.
 * 11 October - Ghost Light Part Two debuted on BBC1.
 * 12 October - DWM 154 was released.
 * 14 October - The Incredible Hulk Presents 2# was published, featuring the first part of COMIC: Hunger from the Ends of Time!.
 * 18 October - Ghost Light Part Three debuted on BBC1.
 * 19 October - PROSE: Doctor Who - The Mutation of Time was first published.
 * 21 October - The Incredible Hulk Presents 3# was published, featuring the second and last part of COMIC: Hunger from the Ends of Time!.
 * 25 October - The Curse of Fenric Part One debuted on BBC1.
 * 28 October - The Incredible Hulk Presents 4# was published, featuring the COMIC: War World!.

November

 * 1 November - The Curse of Fenric Part Two debuted on BBC1.
 * 4 November - The Incredible Hulk Presents 5# was published, featuring the COMIC: Technical Hitch.
 * 8 November - The Curse of Fenric Part Three debuted on BBC1.
 * 9 November - DWM 155 was released.
 * 11 November - The Incredible Hulk Presents 6# was published, featuring the COMIC: A Switch in Time!.
 * 15 November - The Curse of Fenric Part Four debuted on BBC1.
 * 16 November - PROSE: Doctor Who - Silver Nemesis was first published.
 * 18 November - The Incredible Hulk Presents 7# was published, featuring the COMIC: The Sentinel!.
 * 22 November - Survival Part One debuted on BBC1.
 * 25 November - The Incredible Hulk Presents 8# was published, featuring the first part of COMIC: Who's That Girl!.
 * 29 November - Survival Part Two debuted on BBC1.
 * The Doctor Who: The Scripts release of The Talons of Weng-Chiang was first published.

December

 * December - DWM 156 was released.
 * December - The London World of Doctor Who Exhibition closed.
 * 2 December - The Incredible Hulk Presents 9# was published, featuring the COMIC: Who's That Girl!.
 * 6 December - Survival Part Three debuted on BBC1.
 * 9 December - The Incredible Hulk Presents 10# was published, featuring the COMIC: The Enlightenment of Ly-Chee the Wise.
 * 16 December - The Incredible Hulk Presents 11# was published, featuring the COMIC: Slimmer!.
 * 21 December - Doctor Who - The Greatest Show in the Galaxy was first published.
 * 23 December - The twelve and final issue of The Incredible Hulk Presents was published, featuring the COMIC: Nineveh!.
 * 23 December - REF: The Doctor Who Programme Guide, first published in two volumes in 1981, was reissued in a single-volume, expanded and revised edition.
 * Late December - The Doctor Who: The Scripts release of The Daleks was first published.

Unknown dates

 * Unknown - The first edition of the four-track EP, Doctor Who - Variations on a Theme, was released in twelve-inch vinyl, standard CD, and as an unusual square-shaped CD.