1989

July

 * 24 - 26 - The Sixth Doctor met Melanie Bush for the first time. (PDA: Business Unusual)

October

 * 13 - Raine Creevy met the Seventh Doctor for the first time. (BFA: Crime of the Century)

Unknown dates

 * The Seventh Doctor and Ace returned to Perivale. (DW: Survival)
 * Bobby Prescott and a number of other people tried and failed to stop a mob from destroying a library during riots in New York. (NA: Cat's Cradle: Warhead)
 * The Ninth Doctor suggested that Rose Tyler and he go to Marbella in this year to avoid the Daleks at the Battle of the Game Station in 200,100. (DW: The Parting of the Ways)
 * Amy Pond and Rory Williams were born. (DW: The Beast Below, The Vampires of Venice)

January

 * 04 - DW: The Greatest Show in the Galaxy Episode 4 was first broadcast, concluding the twenty-fifth anniversary season.
 * 19 - DWN: Doctor Who - Delta and the Bannermen was first published.
 * REF: The Doctor Who File was published in paperback.
 * 28 - Lara Goodison was born.

February

 * 16 - DWN: Doctor Who - The War Machines was first published.
 * 18 - John Bailey, who played the Commander in DW: The Sensorites, Edward Waterfield in DW: The Evil of the Daleks and Sezom in DW: The Horns of Nimon, died in London.

March

 * 16 - DWN: Doctor Who - Dragonfire was first published.
 * Two Doctor Who Classics reprint volumes were published: DWN: The Dæmons/The Time Monster and DWN: The Mind of Evil/The Claws of Axos.
 * John Wyse died.

April

 * REF: Doctor Who: The Time-Travellers' Guide was published in paperback.
 * 02 - Clare Thomas was born.
 * 08 - Adam Kurakin was born.
 * 12 - Gerald Flood, who portrayed King John in DW: The King's Demons and provided the voice of Kamelion, died from a heart attack.
 * 20 - DWN: Doctor Who - Attack of the Cybermen was first published.
 * 25 - George Coulouris, who played Arbitan in DW: The Keys of Marinus, died in London from a heart attack after a long battle with Parkinson's Disease.

May

 * 18 - TME: Doctor Who - The Nightmare Fair was first published. This was the first of a new spin-off line by Target Books dubbed "The Missing Episodes". These were novels based upon the cancelled Season 23, which was delayed a year due to the BBC-ordered hiatus and then replaced by what became DW: The Trial of a Time Lord. Although based upon a teleplay, the fact it was never produced makes this, in effect, the first original-to-print Doctor Who novel in which the Doctor himself was the lead character.
 * Target Books published two final Doctor Who Classics reprint volumes before abandoning the venture: DWN: The Face of Evil/The Sunmakers and DWN: The Seeds of Doom/The Deadly Assassin.
 * 26 - Doctor Who: Voyager was published by Marvel Comics. This was a graphic novel collecting, in colourized form, the 1985 Doctor Who Magazine comic arc Voyager, and was likely the first single-story Doctor Who graphic novel (albeit not featuring original material).

June

 * 15 - DWN: Doctor Who - Mindwarp was first published. This was the fourth and final novelisation based upon segments of DW: The Trial of a Time Lord. It was also the final Sixth Doctor story to be novelised; plans for a novelisation of DW: Revelation of the Daleks were made, but the book was never published and that story remains officially unnovelised.

July

 * 20 - DWN: Doctor Who - The Chase was first published. Written by John Peel, The Chase was the first of a series of Dalek story novelisations by Peel commissioned after Target Books reached an agreement with Terry Nation to allow his remaining Dalek stories to be adapted as novels. (before this, DW: The Chase and other Nation-penned Dalek episodes were expected to remain in limbo, novelisation-wise). Around the time of this book's release, it was announced that a similar agreement had been reached with Eric Saward regarding his two Dalek serials, but ultimately these two stories were never adapted.

August

 * 03 - The final studio recording session for the 1963-89 series of Doctor Who was undertaken as work was completed on DW: Ghost Light. Discounting a voiceover session conducted in November, this marked the end of BBC production on the series until work on the revival commenced in 2004.
 * 04 - Maurice Colbourne died.
 * 17 - TME: Doctor Who - The Ultimate Evil was first published. It was the second release in the "Missing Episodes" line.
 * 29 - The second volume of Doctor Who: The Scripts was published: DW: The Tomb of the Cybermen.

September

 * 06 - DW: Battlefield Episode 1 was first broadcast, launching Season 26, the final season of the 1963-89 series. Nicholas Courtney returned for the first time since DW: The Five Doctors, and UNIT took an active role in a story for the first time since DW: The Android Invasion. Jean Marsh, who had played companion Sara Kingdom, returned in a different role.
 * 13 - DW: Battlefield Episode 2 was first broadcast.
 * 16 - Sylvester McCoy appeared as The Doctor in a skit on The Noel Edmunds Saturday Roadshow. David Banks also appeared as the Cyberleader in what was his final television appearance to date as a Cyberman.
 * 20 - DW: Battlefield Episode 3 was first broadcast. It was the first appearance of Bessie since DW: The Five Doctors and since DW: Robot in a regular episode.
 * 21 - DWN: Doctor Who - Mission to the Unknown was first published. It was part one of a two-volume adaptation of DW: The Daleks' Master Plan, the only two-part novelisation ever issued by Target.
 * 27 - DW: Battlefield Episode 4 was first broadcast. It was the final appearance of Nicholas Courtney in a Doctor Who story, though he later appeared in the independent spin-off Downtime, as well as SJA: Enemy of the Bane. It was the final appearance of UNIT until DW: Aliens of London. It was also the final appearance of Bessie to date.

October

 * The Ultimate Interview: Colin Baker Talks with David Banks was first released on cassette by Silver Fist Productions.
 * 04 - DW: Ghost Light Episode 1 was first broadcast.
 * 11 - DW: Ghost Light Episode 2 was first broadcast.
 * 17 - This date was the tenth anniversary of Doctor Who Magazine.
 * 18 - DW: Ghost Light Episode 3 was first broadcast.
 * 19 - DWN: Doctor Who - The Mutation of Time was first published, concluding the adaptation of DW: The Daleks' Master Plan.
 * 25 - DW: The Curse of Fenric Episode 1 was first broadcast.

November

 * 01 - DW: The Curse of Fenric Episode 2 was first broadcast.
 * 08 - DW: The Curse of Fenric Episode 3 was first broadcast.
 * 15 - DW: The Curse of Fenric Episode 4 was first broadcast.
 * 16 - DWN: Doctor Who - Silver Nemesis was first published.
 * 22 - DW: Survival Episode 1 was first broadcast.
 * 23 - Sylvester McCoy recorded the monologue that ended episode 3 of DW: Survival and, ultimately, the original 1963-89 Doctor Who series. This was a late addition to the serial by John Nathan-Turner, who expected it to be the final episode. Ironically this was also the anniversary of the debut of Doctor Who in 1963. It was also one of the few times since the 1960s that a major element of a televised serial was produced while the serial in question had already begun airing.
 * 29 - DW: Survival Episode 2 was first broadcast.
 * The Doctor Who: The Scripts release of DW: The Talons of Weng-Chiang was first published.

December

 * James Hall died.
 * 06 - DW: Survival Episode 3 was first broadcast. The twenty-sixth season finale ultimately proved to be the final episode of the original series, and the last weekly episode to be broadcast until 2005. It was the final use of the Keff McCulloch theme music arrangement, while the current series logo continued to be used for merchandise and books until 1996 and it and a version of the 1987 opening credits sequence were used again in the 1993 special DW: Dimensions in Time. It was the final twenty-five-minute episode produced (although The Sarah Jane Adventures revived the format in 2007). Although producer John Nathan-Turner later said he was aware the series was going off the air, and Sophie Aldred, in the documentary Thirty Years in the TARDIS said she was told it was cancelled, the BBC did not make any cancellation announcement, and it was widely assumed, and hoped, by fans that a twenty-seventh season would air in 1990. It was the final regular-series appearance of Sophie Aldred and Anthony Ainley (though both reprised their characters in later productions not directly considered part of continuity).
 * 12 - Howard Lang, who played Horg in DW: An Unearthly Child, died.
 * 21 - DW: Doctor Who - The Greatest Show in the Galaxy was first published. The title of this release ended up being ironic, as it became the first Target Books novelisation to be published after the de facto end of the original 1963-89 series.
 * 23 - IHP: Nineveh was released.
 * REF: The Doctor Who Programme Guide, first published in two volumes in 1981, was reissued in a single-volume, expanded and revised edition. Author Jean-Marc Lofficier followed this release with several more reference volumes over the next decade.
 * The Doctor Who: The Scripts release of DW: The Daleks was first published. The next release in this series did not occur until 1992.

Unknown dates

 * Pioneer Books published the second edition of The Doctor and the Enterprise by Jean Airey. An unauthorised crossover between Doctor Who, Star Trek, and The Wizard of Oz, the book had previously been published in a small-press edition in 1982; this new version edited out most overt references to Star Trek character names.
 * Daniel Kaluuya was born.
 * Aaron Hanley was born.
 * 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. This release featured unique rearrangements of the Doctor Who theme by Mark Ayres, Dominic Glynn, and Keff McCulloch that had been created for various Doctor Who Appreciation Society conventions in the 1980s. One of these, the "Latin Version", was later adopted by BBC Video as the theme for its "Years" series of video retrospectives.