On 9 April, a number of things set in or relevant to the Doctor Who universe were released or published.
- 1966 - "The Hall of Dolls" was first broadcast on BBC1.
- 1966 - Part four of the TV Comic story Plague of the Black Scorpi was first published.
- 1977 - Part four of the TV Comic story The Fire Feeders was first published.
- 1980 - Part eight of the Doctor Who Weekly comic story Doctor Who and the Star Beast and part two of The Outsider were first published.
- 2005 - The Unquiet Dead was first broadcast on BBC One. Later, TARDIS Tales aired on BBC Three.
- 2005 - Anthology Short Trips: Seven Deadly Sins was first published by Big Finish.
- 2008 - DWC 5 was first published by IDW Publishing.
- 2009 - The Doctor Who Adventures comic story T.R.O.L. was first published.
- 2013 - Strax Field Report: Trafalgar Square was released online.
- 2014 - The Doctor Who Adventures comic story Universally Known was first published.
- 2014 - The War To End All Wars was first released by Big Finish.