Ronnie Foster (born May 12, 1950) is an American funk and soul-jazz organist, and record producer. His albums recorded for Blue Note Records in the 1970s have gained a cult following after the emergence of acid-jazz.

Born in Buffalo, New York, Foster has performed as a sideman with a wide range of musicians. He frequently worked with guitarist George Benson, including playing electric piano, mini-moog, and composing “Lady” on Benson’s 1976 album Breezin’. Foster has also played organ with Chet Atkins, Grant Green, Grover Washington, Jr., Stanley Turrentine, Roberta Flack, Earl Klugh, Harvey Mason, Jimmy Smith, and Stevie Wonder. His producing credits include albums by Brazilian artists Djavan, Guilherme Arantes and Pepeu Gomes. Foster was the musical director for “Smokey Robinson Presents: Human Nature” which appeared at The Venetian Resort Hotel Casino in Las Vegas from 2009–2015.