| Kai-Sumiyoshi Station | |
| Native Name: | 甲斐住吉駅 |
| Native Name Lang: | ja |
| Style: | JR Central |
| Address: | Sumiyoshi 2-chome, Kōfu-shi, Yamanashi-ken |
| Country: | Japan |
| Operator: | JR Central |
| Line: | Minobu Line |
| Distance: | 83.1 kilometers from |
| Platforms: | 1 side platform |
| Status: | Unstaffed |
| Opened: | March 30, 1928 |
| Passengers: | 498 daily |
| Pass Year: | 2016 |
| Map Type: | Japan Yamanashi Prefecture#Japan |
| Map Dot Label: | Kai-Sumiyoshi Station |
is a train station on the Minobu Line of Central Japan Railway Company (JR Central) located in city of Kōfu, Yamanashi Prefecture, Japan.
Kai-Sumiyoshi Station is served by the Minobu Line and is located 83.1 kilometers from the southern terminus of the line at Fuji Station.
Kai-Sumiyoshi Station has one side platform serving a single bi-directional track. The station is unattended.
Kai-Sumiyoshi Station was opened on April 1, 1931 as a signal stop on the Fuji-Minobu Line. It was elevated to a full station on October 1, 1938. The line came under control of the Japanese Government Railways on May 1, 1941. The JGR became the JNR (Japan National Railway) after World War II. Along with the division and privatization of JNR on April 1, 1987, the station came under the control of the Central Japan Railway Company.