The Centennial Lake Provincial Nature Reserve (also known as Centennial Lake Provincial Park) is a provincial park[3] located in the municipality of Greater Madawaska, Renfrew County, in Eastern Ontario, Canada.

[2][4][5][6][7] The 530-hectare (1,300-acre) reserve was created in 1989 and is managed by Ontario Parks.

The majority of the park is a section of land north of Black Donald Lake surrounding Oakhill Lake and bordered on the east by the Black Donald Creek; another part is the largest island in Black Donald Lake, and the remaining 3 parts are portions of three smaller islets in the same lake.

[3][5] The park protects unusual geological features and many rare plant species, including the Purple cliffbrake (Pellaea atropurpurea).

This Eastern Ontario geographical article is a stub.