Blessed Trinity Catholic High School, Catholic high school in Roswell, United States

Blessed Trinity Catholic High School is a secondary school in suburban Atlanta that sits on spacious grounds with multiple athletic fields, a theater, and modern educational facilities. The campus provides space for both classroom learning and various extracurricular activities on its wide property.

Archbishop John Francis Donoghue broke ground on the school on January 29, 1999, after the 1990s growth of Atlanta's Catholic population prompted the archdiocese to create Catholic Construction Services, Inc. in 1997. Construction was briefly halted by the discovery of a shallow grave of Confederate soldiers, then resumed and finished in 2000. The school opened in August 2000 with 219 students, 164 freshmen and 55 sophomores, and held its first graduation on May 24, 2003.

The school's name comes from the Catholic doctrine of the Trinity, and its teams compete as the Titans. The Blessed Trinity Theatrical Alliance stages three shows a year, and its 2014 production of Cats had a cast of 112 and drew more than 650 people on opening night. The a cappella group, the Blessed Trinitones, rehearses after school.

Blessed Trinity is an operating Archdiocesan high school, so campus access is tied to the school day and its events rather than general tourism. Athletic contests and the three annual BTTA shows, staged in the fall, winter and spring, are the usual occasions when outsiders come onto the grounds. The campus lies in Roswell, a northern suburb of Atlanta.

Construction of Blessed Trinity was briefly halted when a shallow grave of Confederate soldiers from the Civil War was discovered on the site, then resumed and finished in 2000. The school opened that August with 219 students, 164 freshmen and 55 sophomores.