The War on Errorism is the ninth studio album by the American punk rock band NOFX. It was released on May 6, 2003 through Fat Wreck Chords. It was the first NOFX album to be released through Fat Wreck Chords. The album takes aim at US president George W. Bush, criticizing him and his policies. The album cover features a cartoon version of the president as a clown. The song "Franco Un-American" was the first single, garnering some airplay on major radio stations in the United States.
The album was recorded in 2003 after they left Epitaph Records in 2001, following the release of 2000's Pump Up the Valuum.