Pike Bay Township is a township in Cass County, Minnesota, United States. The population was 1,643 as of the 2000 census. Pike Bay Township was named for Pike Bay of Cass Lake, and indirectly for Zebulon Pike, an explorer.

Cass County is a county in the central part of the U.S. state of Minnesota. As of the 2020 census, the population was 30,066. Its county seat is Walker. The county was formed in 1851, and was organized in 1897.