Keir Atwood Dullea (/ˈkɪər dʊˈleɪ/; born May 30, 1936) is an American actor. He is best known for his roles of astronaut David Bowman in the 1968 movie 2001: A Space Odyssey and its 1984 sequel, 2010: The Year We Make Contact.
His other movie roles include Bunny Lake Is Missing (1965) and Black Christmas (1974).