Lac La Croix First Nation (Ojibwe: Negwaakwaani-zaaga'igan) is a Saulteaux First Nation band government who reside in the Rainy River District of northwestern Ontario, Canada, along the Ontario-Minnesota border. It is approximately 200 km northwest of Thunder Bay, Ontario. As of January 2008, the First Nation had a registered population of 398 people, of which their on-Reserve population was 273.