Reitz Memorial High School or simply Memorial High School (MHS), is an inter-parochial Catholic High School in Evansville, Indiana. It sits on a 13-acre (53,000 m²) tract of land off Lincoln Avenue that was bought with money donated by Francis Joseph Reitz in 1922. The school officially opened its doors on January 5, 1925. It is part of the Roman Catholic Diocese of Evansville.