The Diocese of Wilmington is a Latin Church ecclesiastical territory – or diocese, of the Catholic Church in the eastern United States. The diocese comprises the entire state of Delaware and the Eastern Shore Region of Maryland.

Alfred Allen Paul Curtis was an American prelate of the Roman Catholic Church. He served as bishop of the Diocese of Wilmington in Delaware (1886–1896) and as an auxiliary bishop of the Archdiocese of Baltimore in Maryland (1897–1908). Curtis had served as an Episcopal priest before converting to Catholicism.