Karin Olofsdotter Bång, also known as Bång-Karin (1720–1790), was a Swedish spiritual ecstatic leader. She was the leader of an apocalyptic cult together with , vicar of the Lillhärdal parish in Jämtland, a cult known as the Lillhärdalsläsarna (The Lillhärdal Readers) or the Svärmeriet i Lillhärdal (The Lillhärdal Religious ecstasy), which lasted in Jämtland from 1768 until at least 1793. Karin Olofsdotter should not be confused with , who was also called Bång-Karin and also active as a religious leader in the 1770s, being active in Stockholm.