St. Mary's Catholic Model High School is an independent, co-educational, Catholic, day and boarding school, located in Port Harcourt, Rivers State, Nigeria. As its name indicates, its patron saint is Mary, mother of Jesus. Its motto is "Faith, Knowledge and Love". The school was founded and officially opened on 25 September 2006. The proprietor is His Lordship, Most Rev. Camillus Archibong Etokudoh.