St. Josaphat Ukrainian Catholic Cathedral is a Ukrainian Catholic cathedral located in Parma, Ohio, in the United States. The cathedral grew out of a parochial school which opened in 1951 and a parish erected in 1959. Construction on the cathedral began in 1982, and was completed in 1985. It was dedicated in 1988, the thousand-year anniversary of the arrival of Christianity in Ukraine. The cathedral is the seat for the Ukrainian Catholic Eparchy of Saint Josaphat in Parma, which was erected in 1983 during construction of the building.