Ichikawa Junior and Senior High School (市川中学校・高等学校, Ichikawa Gakuen) is a large (2500 students) private school in Moto-kita-kata (本北方), Ichikawa, Chiba, Japan.

In 1937, Yonekichi Koga (古賀米吉 Koga Yonekichi) opened the school in Yawata-aza-shinden (currently known as Higashi-sugano 4-chome), Ichikawa, Chiba.

The school has relationships with John McGlashan College in Dunedin, New Zealand, as well as others in Shanghai, China, the Philippines and Nanaimo, British Columbia, Canada.

The school also manages three kindergartens in the Ichikawa area.

This Japan school-related article is a stub.