"Red Flag" is a song by Canadian rock group Billy Talent. It was released in September 2006 as second single from their second album, Billy Talent II. The Canadian rock music radio station 102.1 The Edge listed "Red Flag" at #145 of their 200 Best New Rock Songs of the Millennium in 2010. The demo version of the song originally appeared in 2005 as a part of the soundtracks of a number of Electronic Arts video games, including NHL 06, Burnout Revenge, Burnout Legends and SSX On Tour. This demo was released by Atlantic Records on the Black Sampler II. The album version is different from the earlier release, with the bridge and refrain having been changed. It has also been used in the soundtrack for the 2007 movie TMNT.