Keep on Your Mean Side is the debut album by UK based indie rock band The Kills. Originally released on March 10, 2003, through Domino Recording Company, it was later reissued on May 4, 2009, with five additional bonus tracks.

The Kills are an English-American rock duo formed by American singer Alison "VV" Mosshart and English guitarist Jamie "Hotel" Hince. They are signed to Domino Records. Their first four albums, Keep On Your Mean Side, No Wow, Midnight Boom, and Blood Pressures, all reached the UK Albums Chart. Their fifth studio album, Ash & Ice, was released in 2016 and reached the top 20 of the UK Albums Chart.