Powassan (/pəˈwɑːsən/) is a municipality in the Canadian province of Ontario, located near North Bay.

The municipality includes the population centres of Powassan and Trout Creek, both along Highway 11.

The village of Powassan began in/about 1880 with the construction of a sawmill and a grist mill.

A construction camp for the Northern and Pacific Junction Railway was established at Powassan in 1885.

[3] On November 30, 1904, a Royal Proclamation was issued that declared that Powassan was a separate and new municipality.