"Keep on Your Mean Side" is a song by the American rock band The Black Keys. It features a gritty sound that combines elements of blues and rock, showcasing the band's signature style. The lyrics convey themes of resilience and self-assertion, encouraging listeners to embrace their inner strength. The track is part of the album Rubber Factory, released in 2003. Known for its raw production and energetic instrumentation, the song exemplifies the band's ability to blend traditional blues influences with modern rock sensibilities, making it a standout piece in their discography.