Nibinamik First Nation (Ojibway language: ᓃᐱᓇᒥᐦᐠ (Niibinamik, "Summerbeaver"); unpointed: ᓂᐱᓇᒥᐠ), also known as Summer Beaver Band, is a small Oji-Cree First Nation reserve in Northern Ontario, located on the Summer Beaver Settlement that is connected to the rest of the province by its airport, and a winter/ice road that leads to the Northern Ontario Resource Trail.

Summer Beaver began as an intentional community in 1975 when a group of Anglican people, related by kinship, decided to leave Lansdowne House, a Catholic settlement.

Violence had reached epic proportions in Lansdowne House in the 1970s and the community was divided along religious lines.

The Summer Beaver people felt that they could make a better life for themselves and their children back at Nibinamik Lake.

The Canadian government was wary of this move, and offered nothing in the way of support for quite some time.