St. Thomas High School or Saint Thomas High School may refer to:
St. Thomas High School (Houston, Texas) St. Thomas High School (Quebec) St. Thomas High School (Braddock, Pennsylvania) St. Thomas' High School, Jhelum St. Thomas High School, Honnavar
See also Saint Thomas Academy, Mendota Heights, Minnesota St. Thomas Aquinas High School (disambiguation) St. Thomas More High School Thomas High School (disambiguation)