St. Thomas More High School may refer to various Catholic high schools named for Thomas More:
St Thomas More High School in Westcliff-on-Sea, Essex, England St. Thomas More High School in the Roman Catholic Archdiocese of Philadelphia St. Thomas More Catholic High School (Louisiana) St. Thomas More High School (South Dakota) Saint Thomas More High School (Milwaukee) St. Thomas More Catholic High School in Spokane, Washington St. Thomas More School (Connecticut) St. Thomas More High School (Champaign, Illinois) St. Thomas More Catholic Secondary School in Hamilton, Ontario