St. Xavier Parish Commercial School, officially The Convent School, was a private secondary school in Cincinnati, Ohio, United States. Founded in 1904 by the Sisters of Notre Dame de Namur, it remained open until 1960. It was associated with St. Francis Xavier Church of the Roman Catholic Archdiocese of Cincinnati. Fr. Francis J. Finn, S.J., served as its first director. Tuition was $50 a year during the 1950s.