Fort William and Rainy River was a federal electoral district represented in the Canadian House of Commons from 1917 to 1925. It was located in the province of Ontario. This riding was created in 1914 from parts of Thunder Bay and Rainy River riding.
It consisted of the soutrhern parts of the territorial districts of Kenora, Rainy River and Thunder Bay.
The electoral district was abolished in 1924 when it was redistributed into Fort William ridings.