Carl Reiner (born March 20, 1922) is an American actor, film director, producer, writer and comedian. He has won nine Emmy Awards during his career.

Reiner was born in the Bronx, New York, the son of Bessie (née Mathias) and Irving Reiner, who was a watchmaker. His parents were Jewish immigrants from the Austro-Hungarian Empire. When he was sixteen, his older brother Charlie read in the New York Daily News about a free dramatic workshop being put on by the Works Progress Administration and told him about it. He had been working as a machinist fixing sewing machines. He credits Charlie with changing his career plans. Reiner was educated at the School of Foreign Service at Georgetown University and served in the United States Army during World War II.

Reiner performed in several Broadway musicals, including Inside U.S.A., and Alive and Kicking, and had the lead role in Call Me Mister. In 1950, he was cast by producer Max Leibman in Sid Caesar's Your Show of Shows, appearing on air in skits while also working alongside writers such as Mel Brooks and Neil Simon. He also worked on Caesar's Hour with Brooks, Simon, Larry Gelbart, Mel Tolkin, Mike Stewart, Aaron Ruben, Sheldon Keller and Gary Belkin.