Mark Goddard is an American actor whose career spans television, film, and theater. After studying acting at the Pasadena Playhouse, he gained recognition for his role as Major Don West in the television series Lost in Space (1965–1968). Goddard also appeared in episodic television, made-for-TV movies, and stage productions, balancing roles in both science fiction and dramatic genres. His work demonstrates adaptability across formats, sustaining a career that integrates mainstream television visibility with theatrical discipline and periodic independent film projects.