Bud Green (born Moses David Green) was an American songwriter.
In his early career, he wrote material for vaudevilles. He was a staff writer for music publishers and wrote Broadway stage scores as well as songs for other musicals.
By 1928, he had written "Alabamy Bound" and "That's My Weakness Now", which became a huge hit for Ukulele Ike and Helen Kane. Kane's version including the suggestive scat phrase "boop boop ba doo." This line and Kane's stage persona made the song synonymous with the flapper era. Kane and the song became the inspiration for the Betty Boop cartoons that debuted in 1930. The song was self-published by Green and Sam H. Stept. They were in the Brass Rail Building at 745, 7th Avenue. They then went to Hollywood to work for the movie industry. He and Stept eventually sold their company to Warner Bros. and returned to New York.
He collaborated with many artists and fellow songwriters, including Les Brown, Buddy De Sylva, Al Dubin, Ella Fitzgerald, Slim Gaillard, Ray Henderson, Ben Homer, Raymond Scott, Sam H. Stept, and Harry Warren.