Andy Davidson is a fictional character in the BBC television programme Torchwood, portrayed by Tom Price, a spin-off from the long-running series Doctor Who. Andy, an officer with the South Wales Police, is a supporting character who first appears in Torchwood's premiere episode "Everything Changes" and recurs regularly from thereon. Though initially only credited as 'PC Andy', the character's surname 'Davidson' was given in novels and online media and eventually confirmed by dialogue in Children of Earth, "Day Three" (2009). Like Gwen's partner, Rhys, Andy is used by the production team as an everyman character who grounds the series in a recognisable real-world setting. The character had originally been slated to be killed off in the first series, though the production team had a change of heart, believing him to work well as a supporting character. Both cast and crew, as well as professional reviewers have spoken of the character's role in providing comic relief and an outsider's perspective on the Torchwood Institute.

Torchwood is a British science fiction television programme created by Russell T Davies. A spin-off of the 2005 revival of Doctor Who, it aired from 2006 to 2011. The show shifted its broadcast channel each series to reflect its growing audience, moving from BBC Three to BBC Two to BBC One, and acquiring American financing in its fourth series when it became a co-production of BBC One and Starz. Torchwood is aimed at adults and older teenagers, in contrast to Doctor Who's target audience of both adults and children. As well as science fiction, the show explores a number of themes, including existentialism, LGBTQ+ sexuality, and human corruptibility.