David Tristan Birkin (born 21 November 1977; age 47) is a British actor and artist who portrayed René Picard in the Star Trek: The Next Generation fourth season episode "Family". Two years later he appeared as a younger version of Jean-Luc Picard in the sixth season episode "Rascals".
With the exception of his Star Trek appearances, he has appeared primarily in UK productions. In 1998, he played the role of Courfeyrac in Les Misérables. His other film credits include The Return of the Musketeers (1989, with Kim Cattrall), Impromptu (1991), Charlotte Gray (2001) and Sylvia (2003).
He was later featured in an episode of Identity (2010) and in the drama Men Don't Lie (2011).
Birkin is the son of screenwriter Andrew Birkin (Omen III, The Name of the Rose) and nephew of actress and singer Jane Birkin.