Thesyre is a band from the province of Québec in Canada. Formed in 1995, Thesyre incorporate elements of black metal, thrash metal, punk rock and industrial music. Eric Syre, as a solo artist under the name Thesyre, contributed to various tribute albums before releasing its own material to a larger public as a full band.

A first official demo recording was released in 2002, followed by a self-titled full-length in 2003. The band’s second album, Duality, was released in 2005. Thesyre signed a 2 albums deal with the legendary French label Osmose Productions.