List of Famous people who died at 51

Thayer David was an American film, stage and television actor. He was best known for his work on the ABC serial Dark Shadows (1966–1971), and as the fight promoter Miles Jergens in the film Rocky (1976). He also appeared as Count Saknussemm in the film Journey to the Center of the Earth (1959) and as Dragon in The Eiger Sanction (1975). His raspy distinctive voice narrated many voice-overs in commercials and instructional films.

Siegfried Böhm was an East German politician and long-term finance minister of East Germany. He was in office for nearly fourteen years between 1966 and 1980.

Nils Bengt Folke Ekerot was a Swedish actor best known for portraying Death in The Seventh Seal (1957) directed by Ingmar Bergman. In 1956, he directed the world premiere of Long Day's Journey into Night, the masterpiece of US playwright Eugene O'Neill.

Patrick (Pat) McGuigan was an Irish singer born in Clones, County Monaghan.

Hugh Everett III was an American physicist who first proposed the many-worlds interpretation (MWI) of quantum physics, which he termed his "relative state" formulation. In contrast to the then-dominant Copenhagen interpretation, the MWI posits that the Schrödinger equation never collapses and that all possibilities of a quantum superposition are objectively real.

Arthur P. Jacobs was a press agent turned film producer responsible for such films in the 1960s and 1970s as the Planet of the Apes series, Doctor Dolittle, Goodbye, Mr. Chips, Play It Again, Sam and Tom Sawyer through his company APJAC Productions.

Norbert Christian (1925–1976) was a German film and television actor.