Chuck Lorre (born Charles Michael Levine October 18, 1952) is a writer, director, producer and composer who has created many American sitcoms, including Grace Under Fire, Cybill, Dharma & Greg, Two and a Half Men and The Big Bang Theory. Lorre also served as an executive producer of the sitcom Roseanne, and currently serves as an executive producer for CBS's Mike & Molly.

In 2007, Lorre co-created The Big Bang Theory (with Bill Prady), which follows two young nerdy physicists living next door to an attractive young woman. Each episode usually focuses on the daily lives of the men and two of their equally nerdy friends, with a dose of absurdity from the relationship with their normal neighbor. The two main protagonists, Sheldon and Leonard, are named after the actor and television producer Sheldon Leonard. The show is the second highest rated comedy series in America.