The Italian Catholic diocese of Castellammare di Stabia, on the Bay of Naples, existed until 1986. In that year it became part of the archdiocese of Sorrento-Castellammare di Stabia.
Previous to Ursus, present at the Roman synod under Pope Symmachus, in 499, no register was kept of the bishops of this city. Among its bishops were:
In 1818 Pope Pius VII united with this see the diocese of Torre Patria (diocese of Lettere-Gragnano), the ancient Liternum.
This article incorporates text from a publication now in the public domain: Herbermann, Charles, ed. (1913). "". Catholic Encyclopedia. New York: Robert Appleton.