"It Ain't Over 'til It's Over" is a song written, produced, and performed by American musician Lenny Kravitz for his second studio album, Mama Said (1991).

Released as the album's second single in June 1991 by Virgin, the song is a mid-tempo ballad musically inspired by Motown, Philly soul, and Earth, Wind & Fire (particularly "That's the Way of the World").

British singer Mutya Buena's 2007 song "Real Girl" contains a sample from "It Ain't Over 'til It's Over";[3] this recording peaked at No.

[4] The song was written by Kravitz while dealing with a struggling marriage to his then wife, Lisa Bonet, and was an attempt to rekindle the relationship.

[6] Larry Flick from Billboard complimented it as a "delicious slice of Philly soul/pop, flavored with lush strings, understated funk bass and guitar riffs, and Kravitz's engaging falsetto vocal.

[9] Pan-European magazine Music & Media felt the singer "sings in smooth tones, reminiscent of Curtis Mayfield and the Style Council.

"[10] Parry Gettelman from Orlando Sentinel complimented "a nice guitar solo that sounds a bit like Hall & Oates circa "She's Gone".

[12] In a 2016 retrospective review, Christopher A. Daniel from Albumism remarked that the song "marries his Curtis Mayfield-inspired falsetto with chunky Stax Records guitars and a lush MFSB-flavored (possibly Love Unlimited Orchestra) string arrangement.

"[14] The accompanying music video for "It Ain't Over 'til It's Over", directed by American film director and production executive Jesse Dylan, features Kravitz and his band performing the song.