Mo Money Mo Problems

"Mo Money Mo Problems" is a song by American rapper the Notorious B.I.G., released as the second single from his second studio album, Life After Death (1997) on July 15, 1997, by Bad Boy Records and Arista Records. It features guest performances from fellow American rappers Mase and Puff Daddy; all three rappers co-wrote the song with Stevie J, who also co-produced it with Puff Daddy. "Mo Money Mo Problems" contains a sample and an interpolation of "I'm Coming Out" by Diana Ross, hence Bernard Edwards and Nile Rodgers are credited as songwriters; the sampled portions are heard in the production, while the hook is interpolative and performed by Kelly Price in an uncredited appearance.

Released posthumously, "Mo Money Mo Problems" topped the Billboard Hot 100 for two weeks in 1997, replacing "I'll Be Missing You" at the top of the chart, Puff Daddy's own tribute to the rapper. The song is the Notorious B.I.G.'s second posthumous number-one single, following "Hypnotize", making him the only artist in Hot 100 history to have two number-one singles posthumously. It was the sixth song to hit number one posthumously for a credited artist. It received a nomination for the Grammy Award for Best Rap Performance by a Duo or Group in 1998.