Windir (Primal Warrior in English) was a black metal band from Sogndal, Norway. The band combined black metal with folk music and mythology. The band was formed in 1994 and released its debut album in 1997. Windir was a project of vocalist and multi-instrumentalist Terje "Valfar" Bakken.

Windir produced four albums in their almost ten years of existence. The band broke up when Valfar died of hypothermia. Many of Windir's lyrics are written in Sognamål.