Reuben "Ruby" Braff (March 16, 1927 – February 9, 2003) was an American jazz trumpeter and cornetist. Jack Teagarden was once asked about him on the Gary Moore TV show and described Ruby as "the Ivy League Louis Armstrong."

Braff was born in Boston. He was renowned for working in an idiom ultimately derived from the playing of Louis Armstrong and Bix Beiderbecke.