**Keir Dullea** (born in Cleveland in 1936) is an American actor whose film career has been defined by complex and often introverted roles, especially in the 1960s.

He gained early recognition for his portrayal of a troubled young man in *David and Lisa* (1962). However, his most celebrated role remains that of astronaut Dave Bowman in Stanley Kubrick's *2001: A Space Odyssey* (1968), a performance that cemented his global recognition and perfectly embodies his ability to convey intelligence and quiet intensity.

Other notable films include the thriller *Bunny Lake Is Missing* (1965) and the drama *The Fox* (1967). Dullea stood out for his enigmatic aura and emotional depth, often portraying sensitive and contemplative youthful figures. Although he continued to work in film, television, and theater, his image is inextricably linked to Kubrick's space epic.