Eureka Township is a township in Greenwood County, Kansas, United States.

Eureka Township covers an area of 58.53 square miles (151.6 km2) and contains one incorporated settlement, Eureka (the county seat).

The streams of East Branch Fall River, Kitty Creek, Spring Creek and West Branch Fall River run through this township.

Eureka Township contains one airport or landing strip, Eureka Municipal Airport.

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