George Mraz (born Jiřà Mráz on September 9, 1944 in PÃsek, Protectorate of Bohemia and Moravia, now Czech Republic) is a jazz bassist and alto saxophonist. He was a member of Oscar Peterson's group, and has worked with Stan Getz, Tommy Flanagan, Chet Baker and many other important jazz musicians. He also appears with Joe Lovano, Hank Jones, and Paul Motian on Lovano's records, I'm All for You and Joyous Encounter.