Yorishima (寄島町 Yorishima-chō) was a town located in Asakuchi District, Okayama, Japan.
On March 21, 2006 Yorishima was merged with the towns of Kamogata and Konkō, all from Asakuchi District, to form the new city of Asakuchi.
As of 2003, the town had an estimated population of 6,529 and a density of 724.64 persons per km². The total area was 9.01 km².