Lawrence Joseph Elgart (March 20, 1922 – August 29, 2017) was an American jazz bandleader. With his brother Les, he recorded Bandstand Boogie, the theme to the long-running dance show American Bandstand.
Elgart was born in 1922 in New London, Connecticut, four years younger than his brother, Les. Their mother was a concert pianist; their father played piano as well, though not professionally. Both brothers began playing in jazz ensembles in their teens, and while young Larry played with jazz musicians such as Charlie Spivak, Woody Herman, Red Norvo, Freddie Slack and Tommy Dorsey.