"Peanut Butter" is a song by funk/r&b band Twennynine, released in 1979 on Elektra Records as the first single from their debut album, Best of Friends. The song peaked at No. 3 on the US Billboard Hot R&B Singles chart.
Allmusic's Alex Henderson, in his review of Best of Friends, called Peanut Butter a "goofy funk smoker".