Garry Kent Marshall (born November 13, 1934) is an American actor, director, writer and producer. His credits include creating Happy Days and directing Nothing In Common, Pretty Woman, Runaway Bride, and The Princess Diaries.

Marshall was born in the New York City borough of the Bronx, the son of Marjorie Irene (née Ward), a tap dance teacher who ran a tap dance school, and Anthony Wallace Marshall, a director of industrial films and later a producer. He is the brother of actress/director Penny Marshall and Ronny Marshall Hallin, a TV producer. His father was of Italian descent, his family having come from Abruzzo, and his mother was of English and Scottish descent; his father changed his last name from "Masciarelli" to "Marshall" before Garry was born. Marshall was baptized Presbyterian and also raised in the Lutheran religion for a time. He attended De Witt Clinton High School and Northwestern University and is a member of the Alpha Tau Omega fraternity, where he wrote a sports column for The Daily Northwestern.

Marshall began his career as a joke writer for such comedians as Joey Bishop and Phil Foster, and then became a writer for the Tonight Show with Jack Paar. In 1961 he moved to Hollywood, where he teamed up with Jerry Belson as a writer for television. The pair worked on The Dick Van Dyke Show, The Joey Bishop Show, The Danny Thomas Show, and The Lucy Show. They then adapted Neil Simon's play The Odd Couple for television. On his own, Marshall created Happy Days, Laverne and Shirley (starring his sister Penny), and Mork & Mindy, which were produced by his associates Thomas L. Miller, Robert L. Boyett, and Edward K. Milkis. He was also a co-creator of the short-lived sitcom Makin' It, which was also produced by the three men.