"Who's Making Love" is a song written by Stax Records staffers Homer Banks, Bettye Crutcher, Don Davis and Raymond Jackson and recorded by singer Johnnie Taylor. Released on the Stax label in the late summer of 1968, it became Taylor's breakthrough single, reaching number one on the Billboard Hot R&B singles chart and number five on the Billboard Hot 100. It became one of the few singles Taylor would become primarily known for in the mainstream. The song featured the Stax house band, Booker T. & the M.G.'s, and Isaac Hayes (on keyboards). It was Taylor's best-selling single before the release of "Disco Lady" almost a decade later.