Osaka International School of Kwansei Gakuin (OIS, 関西学院大阪インターナショナルスクール) is a co-educational international school, located in Minoh, Osaka Prefecture, Japan.

This institution educates students from kindergarten (age 4-5) through to grade 12.

It is accredited by the Western Association of Schools and Colleges and offers three International Baccalaureate (IB) programs: Primary Years Programme (PYP), Middle Years Programme (MYP), and Diploma Programme (DP).

Senior students in English and Japanese can take courses in either one of the schools.

Students from both schools also join together for athletic teams, drama casts, choirs, bands, and orchestra groups.