Chuck is the third studio album by Canadian rock band Sum 41. The album was released on October 12, 2004. It is the last album to feature guitarist Dave Baksh as he left Sum 41 on May 11, 2006. Baksh later rejoined the band in 2015. Chuck peaked at No. 2 on the Canadian Albums Chart and No. 10 on the US Billboard 200, making it the band's highest-charting album until it would be surpassed by Underclass Hero in 2007.

Sum 41 is a Canadian rock band from Ajax, Ontario. The band was formed in 1996 and currently consists of Deryck Whibley, Dave Baksh, Jason McCaslin, Tom Thacker, and Frank Zummo.