No Warning is a Canadian hardcore punk band formed in 1998 in Toronto, Canada. The group was established under the name As We Once Were by the singer Ben Cook, the guitarist Matt DeLong, the bassist Christian Wylde, and the drummer Alan "Yeti" Riches. Their early recordings include two demos (1998) and the track “The Sound and the Fury” (1999), featured on a Redstar Records compilation. After adopting the name No Warning, they released the EP No Warning (2001). The band achieved recognition with the album Ill Blood (2002). They signed with Machine Shop Records and released the recording Suffer, Survive (2004), performing on tour with artists including Linkin Park, Sum 41, and Papa Roach. The ensemble became inactive in late 2005, during which time Cook performed with the band Fucked Up and the guitarist Jordan Posner joined Terror. No Warning resumed activity in 2013 and released the singles “Resurrection of the Wolf” (2013) and “Friends in High Places” (2015). Their discography includes the album Torture Culture (2017).