Shimokoshiki (下甑村 Shimokoshiki-son ) was a village located in Satsuma District, Kagoshima, Japan.
On October 12, 2004 Shimokoshiki was merged with the towns of Hiwaki, Iriki, Kedōin and Tōgō, and the villages of Kamikoshiki, Kashima and Sato, all from Satsuma District, and the old city of Sendai, to form the new city of Satsumasendai.
As of 2003, the village had an estimated population of 2,750 and the density of 47.72 persons per km2. The total area was 57.63 km2.