Reitz Memorial High School or simply Memorial High School (MHS) is an inter-parochial Catholic high school on the east side of Evansville, Indiana. It sits on land bought with money donated by Francis Joseph Reitz in 1922 in memory of his parents, John Augustus and Gertrude Reitz. The school officially opened its doors on January 5, 1925. It is part of the Diocese of Evansville.