The Frog Lake Massacre was part of the Cree uprising during the North-West Rebellion in western Canada. Led by Wandering Spirit, young Cree men attacked officials, clergy and settlers in the small settlement of Frog Lake in the District of Saskatchewan in the North-West Territories on 2 April 1885. Nine settlers were killed in the incident.

The Cree (Cree: Néhinaw, Néhiyaw, etc.; French: Cri) are a North American Indigenous people. They live primarily in Canada, where they form one of that country's largest First Nations.

In Canada, over 350,000 people are Cree or have Cree ancestry. The major proportion of Cree in Canada live north and west of Lake Superior, in Ontario, Manitoba, Saskatchewan, Alberta and the Northwest Territories. About 27,000 live in Quebec.In the United States, Cree people historically lived from Lake Superior westward. Today, they live mostly in Montana, where they share the Rocky Boy Indian Reservation with Ojibwe (Chippewa) people.The documented westward migration over time has been strongly associated with their roles as traders and hunters in the North American fur trade.