St. Patrick's Church, Catholic church in New Orleans, Louisiana, US

St. Patrick's Church is a Gothic Revival church at 724 Camp Street, with a fairly simple exterior and a highly ornate interior. Its single bell tower rises 185 feet (56 m); the nave is 85 feet (26 m) tall, with slender columns supporting fan vaulting and sixteen stained glass windows in a half-dome above the altar.

Bishop Leo-Raymond de Neckere established the parish in 1833 in Faubourg St. Mary, the "American Quarter" settled by English-speaking Irish immigrants; the church was completed in 1840. During the 1849–1851 rebuilding of St. Louis Cathedral it served as pro-cathedral of the diocese. Pastor James Mullon, whose portrait hangs at the back, led the parish through Know Nothing violence and the Union occupation under General Butler.

The church holds Catholic services in English, reflecting how Irish and American settlers created their own religious community separate from the French-speaking population downtown.

The church stands at 724 Camp Street, between Julia and Girod Streets, less than half a mile from Canal Street and within walking distance of downtown hotels and the French Quarter. It sits on relatively high ground near the river, outside the area that flooded after Hurricane Katrina. The Tridentine Mass in Ecclesiastical Latin is offered daily, weekdays and Sundays, according to the 1962 Roman Missal.

The bell tower rises 185 feet, and some 19th-century aerial views of New Orleans were painted from its roof. The nave interior reaches 85 feet, with slender columns supporting fan vaulting and sixteen stained glass windows set in a half-dome above the altar.