The 24-year-old, whose battle against drug addiction has overshadowed her recording successes, had been due to appear at the Rock En Seine festival in Paris.
"Amy Winehouse was regrettably unable to perform at the Rock En Seine show in Paris due to illness," her spokesman said in a statement late on Friday.
- more on this story
Preview and Purchase Amy Winehouse CDs
Tim Gartland - Right Amount of Funky
The Blues: Corky Siegel - Symphonic Blues No. 6
Quick Flicks: The Million Eyes of Sumuru
Bob James & Dave Koz - Just Us
Watch Metallica Saved My Life Documentary Preview
Richie Kotzen Almost Joined Nine Inch Nails
Arcade Fire Preview 'Pink Elephant' With 'Year Of The Snake' Video
Secret Monkey Weekend Announce New Don Dixon Produced Album
Powerwolf and Dragonforce Announce North American Tour
Ben Kweller Teams With The Flaming Lips For Nell Smith Tribute Song
Giant Share 'A Night To Remember' Lyric Video
The Eagles Announce Final Sphere Las Vegas Shows