17 January (releases)

* 1970 - Episode three of Spearhead from Space was first broadcast on BBC1.
* 1970 - Part one of the TV Comic story The Arkwood Experiments was first published.
* 1974 - The novelisations of Spearhead from Space and of Doctor Who and the Silurians were first published by Target Books.
* 1976 - Part three of The Brain of Morbius was first broadcast on BBC1.
* 1976 - Part seven of the TV Comic story The Dalek Revenge was first published.
* 1980 - DWM 15 was released by Marvel Comics.
* 1981 - Part three of Warriors' Gate was first broadcast on BBC1.
* 2005 - Horror of Fang Rock was released on Region 2 DVD.
* 2007 - DWA 21 was first released by BBC Magazines.
* 2008 - DWA 47 was first released by BBC Magazines.
* 2012 - Part two of K9's Question Time was first broadcast on BBC Two.
* 2013 - DWA 303 was first released by Immediate Media Company London Limited.
* 2014 - Luna Romana was first released by Big Finish.
* 2017 - Weapons Grade Snake Oil was first released by Obverse Books.
* 2018 - Kingdom of Lies was first released by Big Finish.
* 2022 - The Collection: Season 26 was released as a Standard Edition Blu-ray box set.