Al Rinker (December 20, 1907 – June 11, 1982) was a musician who began his career as a teen performing with Bing Crosby in the early 1920s in Spokane, Washington in various musical groups. In 1925 the pair moved on to Los Angeles, eventually forming the Rhythm Boys trio with singer/songwriter/pianist Harry Barris. Barris wrote the songs Mississippi Mud, I Surrender, Dear, and Wrap Your Troubles in Dreams among others. The singing group worked with Paul Whiteman's Big Band for three years.