Loser was an American alternative rock band, formed in late 2004.

In 2005 guitarist John 5 of Marilyn Manson fame formed Loser. The band was partly co-founded by John 5's friend, producer Bob Marlette. Vocalist Joe Grah already had a significant amount of success in his home state of Texas with the band Jibe. Marlette recommended Grah to John 5, and so he hopped on a plane to Texas to see Jibe play. Grah flew back to Los Angeles and was hired on the spot. Recruiting fellow Texan musicians bassist Charles Lee and drummer Glendon Crain, Loser began working on their debut album Just Like You. The band played its first show in Hollywood, California on June 9, (6-9-05).