Robert "Red" Ginzler (20 July 1910, Leechburg, Pennsylvania β 29 December 1962, New York) was an American orchestrator, principally remembered for his contributions to the landmark Broadway shows Gypsy, Bye Bye Birdie and How to Succeed in Business Without Really Trying.
A frequent collaborator with fellow arrangers Sid Ramin and Don Walker, he was also billed as Seymour Robert Ginzler until his heyday in the late 1950s.
Despite his relatively short career, Ginzler became an important musical mentor for Robert Farnon, John Kander and Jonathan Tunick.
Contemporary reviewers often singled out his racy arrangements as being clever and first-class.
Ginzler's biographer quotes him as having said, βThe more music you know, the more music you love.β