"You Know I'm No Good" is a song written and performed by English singer Amy Winehouse from her second and final studio album, Back to Black (2006).

Originally recorded as a solo track, it was remixed with guest vocals from the Wu-Tang Clan member Ghostface Killah.

The video features Winehouse in numerous settings including a bar, a bedroom, and a bathtub.

Video was shot by director of photography Adam Frisch and the sets were built at 3 Mills Studios in East London.

A UK edit of the remix featuring Ghostface Killah was also sent to radio, and to download services, and the original full-length US version, featuring Ghostface Killah name-checking Kelly Clarkson amongst others, also received airplay in the United States, where it was added to numerous Rhythmic radio stations.

[5] Billboard found that the track—"in original form—could be no better"; however, it acknowledged that the Ghostface Killah remix added a "ferocious discordant sputter at the midsection.

Winehouse performed the song at the 50th Annual Grammy Awards ceremony while in London, along with her hit single "Rehab".