Cancer Bats are a Canadian hardcore punk band from Toronto, Ontario.

The band is composed of vocalist Liam Cormier, guitarist Scott Middleton, drummer Mike Peters and bassist Jaye R. Schwarzer.

In the French Immersion and Pneumonia Hawk videos the band parodied some of Dallas Green's City and Colour songs.

Fellow Alexisonfire members George Pettit and Wade MacNeil performed guest vocals on the tracks "Pneumonia Hawk" and "Deathsmarch" respectively, and also appeared in the videos for the songs that included their respective contributions.

Members of Cancer Bats have also appeared in music videos by other bands, including '"Hey, It's Your Funeral Mama"' and "Waterwings" by Alexisonfire, "Vices" by Silverstein, "Chelsea Smile" by Bring Me the Horizon and "St. Andrew's" by Bedouin Soundclash.