Trinity Catholic High School was a regional, coeducational Catholic school for grades 9-12 located in Stamford, Connecticut. The school closed at the end of the 2019–2020 academic year. It served parts of Fairfield County, Connecticut and Westchester County, New York. The school was a member of the FCIAC athletic conference. Trinity Catholic was accredited by the New England Association of Schools and Colleges, Inc. and the Connecticut Department of Education. It is located in the Roman Catholic Diocese of Bridgeport.