Sedan Township is a township in Chautauqua County, Kansas, United States.

Sedan Township covers an area of 49.82 square miles (129.0 km2) and contains one incorporated settlement, Sedan (the county seat).

According to the United States Geological Survey, it contains two cemeteries: Casement and Greenwood.

Sedan Township contains one airport, Sedan City Airport.

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