Anti-Flag is a punk band from Pittsburgh, Pennsylvania, formed in 1988. Despite relatively modest beginnings and a back catalog of independent labels, the band has risen to steady popularity, having performed tours on four continents and signed to a major label. The current lineup includes Justin Sane (vocals/guitar), Chris #2 (vocals/bass), Chris Head (guitar), and Pat Thetic (drums). Past members include Lucy Fester, Andy Flag, and Jamie Cock.

New Red Archives released their first album, Die for the Government, in 1996. Andy Flag also left the band that year because of personal disputes between himself and Justin. Chris Head began filling in on bass in 1997 and then moved to guitar after Jamie Cock took over bass in 1998. The current lineup finalized in 1999 when Chris #2 replaced Jamie on bass. During this time they released albums on Go Kart Records and Fat Wreck Chords, as well as their own label, A-F Records. Of these, Underground Network (recorded by legendary punk producer Mass Giorgini), is widely considered as their "breakthrough" album, successfully connecting the band with its largest audience to that point.

On October 8, 2004, U.S. Representative Jim McDermott gave a speech in the House of Representatives, praising Anti-Flag for working to encourage young people to register and vote.

In 2005 Anti-Flag signed a two-album record contract with major label RCA, though their label A-F Records remains independent. Their first major-label album, For Blood and Empire, was released on March 21, 2006.

On November 25th, 2007 Anti-Flag revealed on their official site that their new album will be titled The Bright Lights of America. It was produced by Tony Visconti and was released on April 1, 2008.