Kōge (郡家町 Kōge-chō) was a town located in Yazu District, Tottori, Japan.
On March 31, 2005 Kōge was merged with the towns of Funaoka and Hattō, all from Yazu District, to form the new town of Yazu.
As of 2003, the town had an estimated population of 10,163 and a density of 118.82 persons per km². The total area was 85.53 km².