is a female-only secondary school in Hatsukaichi, Hiroshima, Japan. It was founded in 1929.
The school has a marching band and color guard, majorette club, and a non-marching band. More school activities include kendo, volleyball, softball, soccer, and gymnastics.
The student body and faculty travel to Hawaii as an additional event.
Sanyo receives foreign exchange students from several countries and sends exchange students to various countries.