Mount Temple Comprehensive School is a secondary school in Clontarf, Dublin, Ireland. The school operates under the patronage of the Church of Ireland Archbishop of Dublin, and has, as a primary objective, the provision of state-funded second-level education to the Protestant population of northern Dublin, while accepting pupils of all religions and none. The school was established in 1972 following the amalgamation of Mountjoy School, Royal Hibernian Marine School in coastal Clontarf, and Bertrand & Rutland School.

Clontarf is an affluent coastal suburb on the Northside of Dublin in the city's Dublin 3 postal district. Historically, there were two centres of population, one on the coast towards the city, and the fishing village of Clontarf Sheds, further north on the coast at what is now Vernon Avenue. Clontarf has a range of retail businesses in several locations, mainly centred on Vernon Avenue. It adjoins Fairview, Marino, Killester and Raheny. Clontarf is in the jurisdiction of Dublin City Council.