Studio One is an American radio anthology drama series that was also adapted to television. It was created in 1947 by Canadian director Fletcher Markle, who came to CBS from the CBC. It aired under several variant titles: Studio One in Hollywood, Studio One Summer Theatre, Westinghouse Studio One and Westinghouse Summer Theatre.

Offering a wide range of dramas, Studio One received Emmy nominations every year from 1950 to 1958. The series staged some notable and memorable teleplays among its 467 episodes. Some created such an impact, they were adapted into theatrical films. William Templeton's 1953 adaptation of George Orwell's novel Nineteen Eighty-Four, starring Eddie Albert as Winston Smith, led to the 1956 feature-film version with Edmond O'Brien in the principal role. Reginald Rose's drama "Twelve Angry Men", about the conflicts of jurors deciding a murder case, originated on Studio One on September 20, 1954; and the 1957 motion picture remake with Henry Fonda was nominated for three Academy Awards.