Plummer Additional is a township and single tier municipality[2] located in Algoma District in Northeastern Ontario, Canada.

The township includes the communities of Bruce Station, Cloudslee, Plummer, Rock Lake and Rydal Bank.

The town of Bruce Mines is wholly surrounded by, but politically independent of, the township; it was separated in 1903.

However, the 2010 mayoral election in Bruce Mines was won by Gordon Post, a candidate who pledged to investigate the feasibility of reamalgamating the two municipalities.

[4] Population trend:[8] The township is served by Ontario Highway 17 which traverses the south in an east–west orientation, and Ontario Highway 638, which travels the middle of the township in a north–south orientation.