1972

Unknown dates

 * Oskar Steinmann dies. (NA: Just War)
 * Noel Coward dies, an event he knew the date of due to his status as a time traveller. (EDA: Mad Dogs and Englishmen)
 * The Alliance of Shades is disbanded. (DW: Dreamland)

January

 * 01 - DW: Day of the Daleks Episode 1 is first broadcast, launching Season 9, and marking the first major appearance of the Daleks since DW: The Evil of the Daleks in 1967.
 * 08 - DW: Day of the Daleks Episode 2 is first broadcast.
 * 15 - DW: Day of the Daleks Episode 3 is first broadcast.
 * 22 - DW: Day of the Daleks Episode 4 is first broadcast.
 * 25 - An up-and-coming actor named Tom Baker makes his American TV debut with an appearance on The Tonight Show with Johnny Carson, promoting his film Nicholas and Alexandra. In retrospect, this is the first known appearance of any Doctor actor on a major American TV programme (discounting appearances on UK-produced shows like The Avengers and Danger Man that aired in the US).
 * 29 - DW: The Curse of Peladon Episode 1 is first broadcast. A notable member of the cast is David Troughton, son of Second Doctor actor Patrick Troughton; the younger Troughton would continue his involvement in the franchise into the 21st century.

February

 * 05 - DW: The Curse of Peladon Episode 2 is first broadcast.
 * 12 - DW: The Curse of Peladon Episode 3 is first broadcast.
 * 19 - DW: The Curse of Peladon Episode 4 is first broadcast.
 * 26 - DW: The Sea Devils Episode 1 is first broadcast.

March

 * 04 - DW: The Sea Devils Episode 2 is first broadcast.
 * 11 - DW: The Sea Devils Episode 3 is first broadcast.
 * 18 - DW: The Sea Devils Episode 4 is first broadcast.
 * 25 - DW: The Sea Devils Episode 5 is first broadcast.

April

 * 01 - DW: The Sea Devils Episode 6 is first broadcast.
 * 08 - DW: The Mutants Episode 1 is first broadcast.
 * 15 - DW: The Mutants Episode 2 is first broadcast.
 * 20 - The first edition of REF: The Making of Doctor Who is first published by Piccolo Books. Written by Terrance Dicks and Malcolm Hulke, this is the first nonfiction work about the series, and predates Dicks and Hulke's later contributions to the Target Books line. The book is later published in a revised edition by Target in 1976.
 * 22 - DW: The Mutants Episode 3 is first broadcast.
 * 29 - DW: The Mutants Episode 4 is first broadcast.

May

 * 06 - DW: The Mutants Episode 5 is first broadcast.
 * 13 - DW: The Mutants Episode 6 is first broadcast.
 * 20 - DW: The Time Monster Episode 1 is first broadcast.
 * 27 - DW: The Time Monster Episode 2 is first broadcast.

June

 * 03 - DW: The Time Monster Episode 3 is first broadcast.
 * 10 - DW: The Time Monster Episode 4 is first broadcast.
 * 17 - DW: The Time Monster Episode 5 is first broadcast.
 * 24 - DW: The Time Monster Episode 6 is first broadcast, concluding the 9th season.

September

 * After missing the 1972 edition, World Distributors publishes Doctor Who Annual 1973. Beginning this year each book includes the year in the title (always the next year after publication).

October

 * 4 - Colin Gordon, who played the Commandant in DW: The Faceless Ones, dies in Haslemere.
 * 22 - Jack Melford, who played King Menelaus in DW: The Myth Makers, dies in Poole, England.

December

 * "Who is the Doctor" a rock version of the Doctor Who theme with spoken lyrics performed by Jon Pertwee, is first released on Purple Records in the UK.
 * 30 - DW: The Three Doctors Episode 1 is first broadcast, launching Doctor Who's 10th season. Patrick Troughton as the Second Doctor and (in a much-reduced role) William Hartnell as the First Doctor returned for this story celebrating the tenth anniversary of Doctor Who. This is the only time during Jon Pertwee's era that a new season has begun prior to Jan. 1.

Unknown dates

 * Shaun Dingwall, who plays Pete Tyler in Series 1 and 2 of the revived Doctor Who is born in London.