Stand Off is an unincorporated community in southern Alberta, Canada within the Blood (Kainai) reserve. It is on Highway 2, approximately 43 km southwest of Lethbridge and 30 km (19 mi) north of Cardston. The people living in Stand Off and on the reserve are a part of the Blackfoot Nation of Canada and the United States. The Blood Tribe (Nation) has the largest landmass in all eleven Numbered Treaties in Canada, (1871–1921).