St. Pius X was a pope who was canonized.
St. Pius X may also refer to:
Africa
Asia
Australia and New Zealand
Canada
Europe
- International Seminary of Saint Pius X, a theological seminary for the Society of Saint Pius X in Écône, Valais, Switzerland.
- Saint Pius X Catholic High School, Rotherham, a secondary school in Rotherham, England
- St Pius X College, Magherafelt, a secondary school in Northern Ireland
- St. Pius X National School, a primary school in Dublin, Ireland
- A Catholic primary school in Middlesbrough, England
United States
- St. Pius X Parish School, Santa Fe Springs, California
- Saint Pius X Catholic High School (Kansas City, Missouri), a secondary school in Missouri
- Saint Pius X High School (Lower Pottsgrove Township, Pennsylvania), a secondary school in Pennsylvania
- St. Pius X Catholic High School (DeKalb County, Georgia), a secondary school in Georgia
- St. Pius X High School (Albuquerque), a secondary school in New Mexico
- St. Pius X High School (Festus, Missouri), a secondary school in Missouri
- St. Pius X High School (Houston, Texas), a secondary school in Texas
- St. Pius X Minor Seminary (Galt, California), a former minor seminary in the Diocese of Sacramento
- St. Pius X School, a primary school in South Yarmouth, Massachusetts
- St. Pius X School of Liturgical Music, a former music school in New York City
- St. Pius X School, Chula Vista, a primary school in California
- St. Pius X Seminary (Dubuque, Iowa), Minor seminary associated with Loras College, Dubuque, Iowa
- A Catholic middle school in St. Joseph County, Indiana, located in the Roman Catholic Diocese of Fort Wayne-South Bend
- A primary and middle school in Cedar Mill, Oregon.