Oskaloosa Township is a township in Jefferson County, Kansas, United States.

Oskaloosa Township covers an area of 57.61 square miles (149.21 square kilometers); of this, 0.1 square miles (0.25 square kilometers) or 0.17 percent is water.

The streams of Burr Oak Branch, Honey Creek, and Little Buck Creek run through this township.

The township contains two cemeteries: Pleasant View and Plum Grove.

This article about a location in Jefferson County, Kansas is a stub.