Sum 41 is a Canadian punk rock band from Ajax, Ontario, Canada, active since 1996. The current members, as of 2021, are Deryck Whibley (lead vocals, rhythm guitar), Jason McCaslin (bass guitar, backing vocals), Dave Baksh (lead guitar, backing vocals), Tom Thacker (rhythm and lead guitar, keyboards, backing vocals) and Frank Zummo (drums). They’ve released six studio albums as of February 2017.

Sum 41 released their debut album, All Killer No Filler