List of Famous people who born in 1921

Robert Ellis Scott was an American stage, film and television support actor who appeared in over 100 films between 1938 and 1994, according to the Internet Movie Database. Sometimes he was credited as Mark Roberts, Bob Scott, Robert E. Scott, or Robert Scott.

Marshal Ri Ul-sol was a North Korean politician and military official. He played an important role in the administrations of Kim Il-sung and Kim Jong-il, achieving the rank of Marshal of the Korean People's Army. He was responsible for the safety of top North Korean leaders and their families as Commander of the Guard.

Armando Peverelli was an Italian racing cyclist. He rode in the 1949 Tour de France.

Piero Regnoli (1921–2001) was an Italian screenwriter and film director. Born in 1921, Regnoli worked in the film industry between 1953 and 1991 where he wrote over 110 screenplays and directed 11 films. Regnoli's work ranged from sword-and-sandal films, westerns, horror and sexy comedies. His final film where he was officially credited as a director was La principessa sul pisello in 1976. Regnoli did uncredited direction on the 1986 melodrama Giuro che ti amo starring Nino D'Angelo.

Henry Kenneth Bulmer was a British author, primarily of science fiction.

Eduardo Renato Caianiello was an Italian physicist. He contributed to scientific research, especially quantum theory and cybernetics. He was also a pioneer in the theory of neural networks. His Caianiello's equation formalized the theory of Hebbian learning.

Wilmer C. "Bill" Butler, ASC is an American cinematographer. He shot The Conversation (1974), Jaws (1975), and three Rocky sequels. He completed 1975's One Flew Over the Cuckoo's Nest after Haskell Wexler was fired from the production, and was subsequently nominated for an Academy Award for Best Cinematography.