| Koyoshi Station | |
| Native Name: | 子吉駅 |
| Native Name Lang: | ja |
| Address: | Otoshi-14-8 Tamanoike Yurihonjōshi, Akita-ken 015-0044 |
| Country: | Japan |
| Coordinates: | 39.3507°N 140.0598°W |
| Operator: | Yuri Kōgen Railway |
| Line: | Yuri Kōgen Railway Chōkai Sanroku Line |
| Distance: | 4.5 km from |
| Platforms: | 1 side platform |
| Status: | Unstaffed |
| Opened: | August 1, 1922 |
| Passengers: | 16 |
| Pass Year: | FY2018 |
| Map Type: | Japan Akita Prefecture#Japan |
| Map Dot Label: | Koyoshi Station |
is a railway station in the city of Yurihonjō, Akita Prefecture, Japan, operated by the third-sector railway operator Yuri Kōgen Railway.
Koyoshi Station is served by the Chōkai Sanroku Line, and is located 4.5 kilometers from the terminus of the line at Ugo-Honjō Station.
The station has one side platform, serving one bi-directional track. The station is unattended.
Koyoshi Station opened on August 1, 1922 as the on the Yokojō Railway. It was elevated to a full station and given its present name on October 24, 1926. The Yokojō Railway became the Japanese Government Railways (JGR) Yashima Line on September 1, 1937. The JGR became the Japan National Railway (JNR) after World War II. The Yashima Line was privatized on 1 October 1985, becoming the Yuri Kōgen Railway Chōkai Sanroku Line, at which time the station re-assumed its original name. A new station building was completed in December 2011.