Larry Gelbart (b. February 25, 1928 in Chicago, Illinois, USA) is a prolific comedy writer with over 50 years of credits.

He began as a writer for Danny Thomas radio show during 1940s, and wrote for Martin and Lewis and Bob Hope. On 1950s television he worked for Sid Caesar on Your Show of Shows, along with other gifted comedy writers Woody Allen, Neil Simon, Mel Brooks, and Carl Reiner.

Larry Gelbart wrote the long-running Broadway farce A Funny Thing Happened on the Way to the Forum with Burt Shevelove and Stephen Sondheim in 1962, and collaborated with Shevelove on a series of UK movie comedies during the rest of 1960s.

In 1972, Gelbart returned to the United States, and was one of the main forces behind the creation of the TV series M*A*S*H. He wrote and produced some of the series' finest episodes, and left after the fourth season.

Gelbart also wrote the screenplays to Oh, God! and Movie Movie, and in 1982 co-wrote the Oscar-nominated screenplay for Tootsie.

Gelbart's other Broadway credits include the musical City of Angels and the Iran-contra satire Mastergate. In the early 1960s, he uttered the now-classic line, "If Hitler is alive, I hope he's out of town with a musical." TV credits include cable TV-movie Barbarians at the Gate. Gelbart wrote a memoir in 1997 called Laughing Matters.

Gelbart is sometimes known as 'Francis Burns' in the credits. The German translation of his last name means "yellow beard."

Since May 2005, Gelbart has been a contributing blogger at The Huffington Post.