Koishiwara (小石原村 Koishiwara-mura) was a village located in Asakura District, Fukuoka, Japan.
On March 28, 2005 Koishiwara was merged with the village of Hōshuyama, also from Asakura District, to form the new village of Tōhō.
As of 2003, the village had an estimated population of 1,193 and a density of 40.62 persons per km². The total area was 29.37 km².