Sachigo Lake First Nation (Severn Ojibwa: ᓴᒋᑯ ᓴᑲᐦᐃᑲᐣ) is an Oji-Cree First Nation band government in Unorganized Kenora District in Northwestern Ontario, Canada. It is located on Sachigo Lake, part of the Sachigo River system and Hudson Bay drainage basin, approximately 425 kilometres (264 mi) north of the town of Sioux Lookout. As of September 2011, the First Nation had a registered population of 814 people, of which the on-reserve population was 443. Sachigo Lake is policed by the Nishnawbe-Aski Police Service, an Aboriginal-based service.