Mater Dei High School, after a title of Mary (Latin for Mother of God), may refer to:
Mater Dei High School (Breese, Illinois) Mater Dei Catholic High School (Chula Vista, California) Mater Dei High School (Evansville, Indiana) Mater Dei High School (New Jersey) (1961-2023) in Middletown Township, New Jersey Mater Dei High School (Santa Ana, California) Mater Dei High School (Toowoomba) (1955-1974) in Queensland, Australia
See also Mater Dei Academy, secondary school in Cork, Ireland Mater Dei Institute of Education, Dublin, Ireland Mater Dei Catholic College in Wagga Wagga, New South Wales, Australia Mater Dei (disambiguation) Mater Dei College (disambiguation)