Holy Trinity College (Irish: Coláiste na TrÃÂonóide Naofa) is an 11âÂÂ18 mixed Roman Catholic secondary school and sixth form in Cookstown, County Tyrone, Northern Ireland. It was established in 1994 through the amalgamation of St PatrickâÂÂs High School and Our LadyâÂÂs High School, which had originally opened in 1965 as separate boysâ and girlsâ Voluntary Secondary Schools.
The school first opened in September 1965 as two separate institutions:
St PatrickâÂÂs Boys Secondary Intermediate School, an all-boys school, and Our LadyâÂÂs Girls Secondary School, located in the adjacent building. These were later renamed St PatrickâÂÂs High School and Our LadyâÂÂs High School. In 1993, the two schools officially merged to form Holy Trinity College, a co-educational Catholic secondary school serving students aged 11âÂÂ18.
In 2023, construction began on a new ã35 million facility at the rear of the existing Chapel Street site. Designed to accommodate up to 1,300 pupils, the new building includes modern classrooms, sports facilities, and a central courtyard. Construction was completed in October 2025, after which the original school buildings were demolished as part of Phase 2 of the redevelopment.
The school offers instruction at both GCSE and A-level. In 2018, 55.1% of its entrants achieved five or more GCSEs at grades A* to C, including the core subjects English and Maths. Also in 2018, 52.5% of its entrants to the A-level exam achieved A*-C grades.