"I'll Supply the Love" is a song written by David Paich and recorded by Toto, with lead vocals by Bobby Kimball. It was issued on the band's eponymous debut album, and released as a single in January 1979. It peaked at number 45 on the U.S. Billboard Hot 100, where it spent nine weeks on the chart.
Internationally, the song reached No. 92 in Australia, No. 73 in Canada, and No. 29 in New Zealand.
Cash Box said it has "power guitar chords, rhythmic changes, impassioned singing and strong chorus." Billboard said that "David Paich's knack for writing great hooks is evident in this uptempo rocker which features tasty instrumentation and high vocals." Record World called it a "sterling effort" with "brisk chording and vocals."
Classic Rock History critic Brian Kachejian rated it as Toto's sixth greatest song, calling it a "knockout song."