"Sir" Mack Rice (born Bonnie Rice on 10 November 1933, in Clarksdale, Mississippi), is a nationally prominent American songwriter, whose compositions have been performed by many well-known artists, including The Staple Singers, Ike and Tina Turner, Albert King, Johnnie Taylor, Shirley Brown, Rufus Thomas, Etta James, Billy Eckstine, Eddie Floyd, Buddy Guy, The Rascals, Wilson Pickett, Albert Collins, Busta Rhymes, Lynyrd Skynyrd,Otis Clay and The Blues Brothers (in Blues Brothers 2000).

Some of his better known songs include "Betcha Can't Kiss Me (Just One Time)," "Cheaper to Keep Her," "Money Talks," "Cold Women With Warm Hearts," "Do the Funky Penguin, Pt. 1," "It Sho Ain't Me," "Respect Yourself," "Santa Claus Wants Some Lovin'," among others. His best known composition and only hit as a solo performer is "Mustang Sally."

Rice began his work in the R&B field in the 1950s based out of Detroit, performing with the Five Scalders in 1956 and with the Falcons from 1957 to 1963. He performed as a solo vocalist in the years to follow, but his biggest successes were as songwriter for other artists on labels like Stax and others in the 1960s and following decades. He began his solo vocalist career at Stax in 1967, recording on Atco beginning in 1968.