St. Leo may refer to one of several saints named Leo, or:

• St Leo's Catholic College, Sydney
• St Leo's College, University of Queensland, Brisbane

• Saint Leo's Elementary School (Brantford), Ontario
• St. Leo's Roman Catholic Church, Mimico

• St Leo's College, Carlow

• St. Leo, Florida
• Saint Leo Abbey
• St. Leo, Kansas
• St. Leo, Minnesota
• Saint Leo, West Virginia

• Saint Leo University, St Leo, Florida
• St. Leo the Great School, Oakland, California
• St. Leo the Great School, San Jose, California
• St.Leo's Parish School, Elmwood Park, New Jersey
• St. Leo Catholic School, Winston-Salem, North Carolina
• St. Leo Primary School, KwaZulu-Natal Province, South Africa

• Saint Leo the Great Parish, within the Roman Catholic Diocese of San Jose, California
• St.Leo's Roman Catholic Church, Elmwood Park, New Jersey
• Chapel of St Leo, Żurrieq, Malta

• St. Leo's (soccer team), an early twentieth century American soccer team

This disambiguation page lists articles associated with the title St. Leo.
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