Janesville Township is a township in Greenwood County, Kansas, USA.

Janesville Township covers an area of 144.04 square miles (373.1 km2) and contains one incorporated settlement, Hamilton.

According to the USGS, it contains four cemeteries: Homer Creek, Ott, Prairie Chapel and Township.

Janesville Township contains one airport or landing strip, King Ranch Airport.

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