| Koizumi Station | |
| Native Name: | 古泉駅 |
| Native Name Lang: | ja |
| Style: | Iyotetsu |
| Address: | Nishikoizumi, Masaki Town, Iyo District, Ehime Prefecture 791-3134 |
| Country: | Japan |
| Platforms: | 1 side platform |
| Tracks: | 1 |
| Structure: | At grade |
| Code: | IY30 |
| Passengers: | 2,346 |
| Pass Year: | FY2019 |
| Map Type: | Japan Ehime Prefecture#Japan |
| Map Dot Label: | Koizumi Station |
is a passenger railway station located in the town of Masaki, Ehime Prefecture, Japan. It is operated by the private transportation company Iyotetsu.
The station is served by the Gunchū Line and is located 6.6 km from the terminus of the line at .
The station consists of a single island platform. It used to be an unmanned station surrounded by farmland, but since Emifull MASAKI, a large shopping center, opened nearby, it was staffed in September 2008 after installing a simple station staff office and a toilet. During most of the day, trains arrive every fifteen minutes.[1]
The station was opened on March 9, 1967.