Leftöver Crack is an American punk rock band formed in 1998, following the breakup of Choking Victim. The band is currently signed to Tankcrimes for CD releases, and Alternative Tentacles for vinyl releases. Leftöver Crack spans several different music genres including hardcore punk, ska, and crust punk. They write mostly political lyrics of a radical leftist nature, opposing religion, capitalism, and authority. Members of Leftöver Crack reside in the C-Squat on 155 Avenue C in the Lower East Side of Manhattan. Natives of New York City, band members have a well-documented history of back-and-forth conflict with the NYPD which precedes the band's formation. The name "Leftöver Crack" is explained by Stza as being "an oxymoron", based on the idea that crack cocaine addicts are known for vigorous use and are unlikely to have any "leftover" crack.

Scott Sturgeon, also known as Stza Crack or simply Stza, is an American musician and artist who has fronted several ska-punk bands in the New York City area, the best-known being Choking Victim and Leftöver Crack. The stage name Stza is a tribute to the Wu-Tang Clan, members of which would take their stage names from the Supreme Alphabet of the Five-Percent Nation, such as GZA and RZA - Stza's name would therefore be Self Truth ZigZagZig Allah.