Joe Weaver (August 27, 1934 – July 5, 2006) was an American Detroit blues, electric blues and R&B pianist, singer and bandleader. His best known recording was "Baby I Love You So" (1955), and he was a founding member of both the Blue Note Orchestra and the Motor City Rhythm & Blues Pioneers. Over his lengthy but staggered career, Weaver worked with various musicians including the Four Tops, Marvin Gaye, John Lee Hooker, Nathaniel Mayer, the Miracles, Martha Reeves, Nolan Strong & the Diablos, Andre Williams, Nancy Wilson, and Stevie Wonder. In addition, Weaver was a session musician in the early days of Motown Records and played in the house band at Fortune Records. He was a key figure in the 1950s Detroit R&B scene.