Overkill is an American thrash metal band, formed in 1980 in New Jersey. They have gone through many lineup changes, leaving bassist D.D. Verni and lead vocalist Bobby "Blitz" Ellsworth as the only constant members. The band's current lineup includes Verni, Ellsworth, Dave Linsk on lead guitar, Derek Tailer on rhythm guitar and Jason Bittner on drums. Along with Nuclear Assault and Anthrax, whose one-time lead guitarist Dan Spitz was also an early member of Overkill, the band is one of the most successful East Coast thrash metal bands, and they are often called "the Motörhead of thrash metal", based on their unique playing style, which was influenced by punk rock and the new wave of British heavy metal (NWOBHM). The band has a notable mascot named "Chaly" (a skeletal bat with a skull-like face, horns, bony wings and green eyes) who has appeared on many of their album covers.

Overkill has released twenty studio albums.