1980 (releases)


 * 2 January - Actor Catherine Bailey was born.
 * 2 - Actor David Gyasi was born.
 * 5 January - The Horns of Nimon Part 3 was first broadcast.
 * 12 January - The Horns of Nimon Part 4 was first broadcast, bringing the season to an end six weeks earlier than planned due to the cancellation of HOMEVID: Shada. This was the final story to feature the original 1960s arrangement by Delia Derbyshire of the Doctor Who theme music, specifically the arrangement introduced in the 1967 serial The Macra Terror; the final use of the diamond-shaped series logo and Bernard Lodge "tunnel" opening sequence; and the end of Graham Williams' term as producer and of Douglas Adams as a member of the writing team. It was David Brierley's last televised performance as the voice of K9 (although he voiced the character for the incomplete Shada).
 * 24 January - Doctor Who and the Underworld was first published.
 * 24 - The American edition of Doctor Who and the Android Invasion was published by Pinnacle Books.
 * 4 February - Script editor and writer David Whitaker died.
 * 9 February - Actor Heron Carvic died.
 * 21 February - Doctor Who and the Invasion of Time was first published.
 * 18 March - Actor Sophia Myles was born.
 * 20 March - Doctor Who and the Stones of Blood was first published.
 * 20 - Target Books reissued the 1976 non-fiction book REF: The Making of Doctor Who.
 * The American edition of Doctor Who and the Seeds of Doom was published by Pinnacle Books. This was the last re-print of a Doctor Who novelisation by Pinnacle. As of 2009 it stood as the last American edition of a Doctor Who novel.
 * 19 April - Actor Tony Beckley died.
 * 24 April - Doctor Who and the Androids of Tara was first published.
 * 25 April - Actor Samuel Barnett was born.
 * 26 May - Doctor Who and the Power of Kroll was first published.
 * The BBC announced that K9 would be leaving Doctor Who during the next season. According to The Television Companion by David J. Howe and Stephen James Walker, the response to this announcement by fans inspired John Nathan-Turner to pitch the idea of a spin-off series featuring the character, which later became K9 and Company.
 * 4 June - Actor Philip Olivier was born.
 * 26 June - Doctor Who and the Armageddon Factor was first published. Due to the inability of Target Books to come to an agreement with Douglas Adams, this ultimately was the last of the Key to Time- arc serials to be novelised. The remaining serial, The Pirate Planet, was not officially novelised.
 * 26 - Junior Doctor Who and the Brain of Morbius was first published. This was a short version of Doctor Who and the Brain of Morbius and was the second of two such books released (a paperback edition of Junior Doctor Who and the Giant Robot was also released in 1980). Reportedly the book was originally to have been released in 1978.
 * Doctor Who Magazine began publishing Doctor Who-universe comics written by future comics superstar writer Alan Moore.
 * The Doctor Who Annual 1981 was published. Beginning this year the annual, previously published each September, moved to August.
 * 5 August - Actor Sophie Winkleman was born.
 * 6 August - Actor Barry Justice died.
 * 7 August - The final issue of Doctor Who Weekly was published; it changed to a monthly magazine in September.
 * 7 - Actor Norman Atkyns died.
 * 8 August - Actor Simon Lack died.
 * 21 August - Doctor Who and the Keys of Marinus and Doctor Who and the Nightmare of Eden were first published. For the first time in several years, Target Books released more than one book on the same day.
 * 30 August - The Leisure Hive Episode 1 was first broadcast, launching a longer-than-usual Season 18. It was Tom Baker's final season and the first series produced by John Nathan-Turner. Among the many changes evident with this episode were the introduction of a radically different arrangement of the Doctor Who theme by Peter Howell and a new neon-tubing style series logo. A modified costume was also introduced for the Doctor. Season 18 was the last truly "season-long" series, as during the Davison era the show aired from January to March only (two episodes per week) and was subject to an ever-decreasing number of episodes thereafter.
 * Doctor Who Magazine began publishing as a monthly publication, initially changing its title from Doctor Who Weekly to Doctor Who: A Marvel Monthly.
 * John Nathan-Turner approached Peter Davison about taking over from Tom Baker as the star of Doctor Who.
 * 6 September - The Leisure Hive Part 2 was first broadcast.
 * 13 September - The Leisure Hive Part 3 was first broadcast.
 * 20 September - The Leisure Hive Part 4 was first broadcast.
 * 27 September - Meglos Part 1 was first broadcast, featuring the return of Jacqueline Hill to Doctor Who after more than 15 years, albeit as another character. John Leeson returned as the voice of K9.
 * 4 October - Meglos Part 2 was first broadcast.
 * 11 October - Meglos Part 3 was first broadcast.
 * 16 October - Doctor Who and the Horns of Nimon was first published. (Although the series branding changed to a new logo, the previous logo was still used by Target Books for several more volumes.)
 * 18 October - Meglos Part 4 was first broadcast.
 * 24 October - At a press conference, the BBC announced that Tom Baker would be leaving Doctor Who at the end of the current season.
 * 25 October - Full Circle Episode 1 was first broadcast, launching what became known as the E-Space Trilogy. Matthew Waterhouse debuted as new companion Adric.
 * The BBC announced that Peter Davison had been cast as the Fifth Doctor.
 * REF: A Day with a TV Producer, a non-fiction work profiling John Nathan-Turner and the production of The Leisure Hive, was published.
 * 1 November - Full Circle Part 2 was first broadcast.
 * 8 November - Full Circle Part 3 was first broadcast.
 * 13 November - Junior Doctor Who and the Brain of Morbius was published in paperback.
 * 15 November - Full Circle Part 4 was first broadcast.
 * 16 November - Actor Alexa Havins was born.
 * 19 November - Actor Adele Silva was born.
 * 22 November - State of Decay Part 1 was first broadcast.
 * 29 November - State of Decay Part 2 was first broadcast.
 * 4 December - Doctor Who and the Monster of Peladon was first published.
 * 6 December - State of Decay Part 3 was first broadcast.
 * 8 December - Ex-Beatle John Lennon was shot and killed by Mark David Chapman outside his home in New York City.
 * 13 December - State of Decay Part 4 was first broadcast.
 * 30 December - Tom Baker and Lalla Ward married; Baker was in the midst of filming The Keeper of Traken, while Ward's final episodes as Romana had not yet been broadcast.
 * Actor Eliza Dushku was born.
 * Marvel Premiere issue 57 was published by Marvel Comics in the United States. This comic, featuring Fourth Doctor comic strip reprints from Doctor Who Weekly, was the first American comic ever published based upon the Doctor Who TV series (a previous comic published in the mid-60s by another US publisher was based upon the Dr. Who and the Daleks movie, not the TV series). This comic, and three issues that followed, led to the launching of a monthly Doctor Who title by Marvel in 1984.

Unknown dates

 * The Adventures of K9, a children's book series by David Martin, was published by Sparrow Books.
 * Tom Baker and Lalla Ward appeared as the Fourth Doctor and Romana in a series of commercials for Australian television, advertising Prime Computers (a room-sized computer system for business). While most of the commercials featured them in their standard character roles, the final commercial in the series had Romana flirting with the Doctor and ended with the Doctor proposing marriage to her.
 * Actor Johnson Bayly died.
 * Writer Tom MacRae was born.