David John Tennant (né McDonald; 18 April 1971) is a Scottish actor. He is best known for portraying the tenth incarnation of the Doctor in the sci-fi series Doctor Who (2005–2010; 2013). In 2022, he returned to the show as the fourteenth incarnation. His other notable screen roles include DI Alec Hardy in the crime drama series Broadchurch (2013–2017) and its 2014 remake, Kilgrave in the superhero series Jessica Jones (2015–2019), Crowley in the fantasy series Good Omens (2019–present), and various fictionalised versions of himself in the comedy series Staged (2020–2022).

Tennant has worked extensively on stage, including a portrayal of the title character in a 2008 Royal Shakespeare Company production of Hamlet that was later adapted for television. He is also a voice actor, featuring in the animated series DuckTales (2017–2021) as the voice of Scrooge McDuck. In 2015, he received the National Television Award for Special Recognition.