Seton LaSalle Catholic High School is a private, Roman Catholic high school in Mt. Lebanon, Pennsylvania, a suburb of Pittsburgh, Pennsylvania. It is located in the Roman Catholic Diocese of Pittsburgh. In 2016, under the direction of new school board President Tom Datillo, Seton LaSalle simplified the format of its name, changing the school's name from "Seton-La Salle Catholic High School" to "Seton LaSalle Catholic High School".