Kai-Ōizumi Station (甲斐大泉駅, Kai-Ōizumi-eki) is a railway station in Ōizumi-Nishiide in the city of Hokuto, Yamanashi Prefecture, Japan. With an elevation of 1,274 m (4,180 ft) on the southern slopes of Mount Yatsugatake, Kai-Ōizumi Station is the third highest station on the JR East rail network.
The station consists of two ground-level opposed side platforms, connected by a level crossing. The station has a Midori no Madoguchi staffed ticket office.