Bad Meets Evil is an American hip hop duo from Detroit, Michigan that consists of rappers Royce da 5'9" (Bad) and Eminem (Evil). They are best known for collaborating on a self-titled song that appeared on Eminem's major-label debut album The Slim Shady LP in 1999, their early association with Dr. Dre and his label Aftermath Entertainment.

The duo recorded numerous well received underground songs including the popular song "Renegade" which would later be used on Jay-Z's The Blueprint album with Royce's verses replaced by Jay-Z. They have also recorded numerous freestyles together, including a 12-minute long battle. Footage of a Bad Meets Evil concert filmed in September 1998 in Boston at the Lyricist Lounge has also been leaked onto the Internet.
Bad Meets Evil split up in early 2000s, after Royce fell out with Eminem's group, D12. They have since reunited and released their EP Hell: The Sequel on June 14, 2011, which debuted at number 1 in the Billboard 200 charts. Final numbers for the first week sales of the EP were 171,000 via Sound Scan.