"I Don't Wanna Know" is a song by American R&B artist Mario Winans, featuring a rap by P. Diddy, re-recorded background vocals by Enya and sampling the synthesizer riff from Enya's song "Boadicea". It reached number 1 in the United Kingdom and in Netherlands, and number 2 in the United States, stuck for eight consecutive weeks behind the Usher singles "Yeah" and "Burn", respectively. It remains Winans' only major success to date. As a result of its eight weeks at number 2, "I Don't Wanna Know" stands in joint fifth place for the most weeks at number 2 by a song which did not go to number 1, behind Foreigner's "Waiting for a Girl Like You", Missy Elliott's "Work It", Donna Lewis's "I Love You Always Forever" and Shania Twain's "You're Still the One".

The song is based on a sample of the Fugees' 1996 hit single "Ready or Not", which itself was based on a slowed-down sample of the instrumental track "Boadicea" by Enya from her 1987 album Enya. Winans said: "I first heard 'Boadicea' at the end of the movie Sleepwalkers about five or six years ago. It's something I always wanted to produce. Then when The Fugees did it, oh my God, I loved it."

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