Overmars is a French post-metal band, formed in 2001 in Lyon.

Consisting of Xavier Théret (vocals), Antoine (guitar), Pierrick (guitar), Marion (bass), Ben (drums) and Bruno (keyboards), the band released its debut album, Affliction, Endocrine... Vertigo in 2005.

The following year saw the release of another split EP with the band Icos and an EP entitled Büccolision with Kill the Thrill.

[1] Compared to the band Swans,[2] Overmars is noted for its "oppressive, droning, oftentimes sludgy interpretation of the post-metal genre.

[3] The band's second album, Born Again, is composed of a single 40-minute song[1] and featured on NME's list of "The Twenty Heaviest (Metal) Records of All Time".