Caorle (Italian pronunciation: [ˈkaːorle]; Venetian: Càorle) is a coastal town in the Metropolitan City of Venice, Veneto, northern Italy, located between the estuaries of the Livenza and Lemene rivers. It is situated on the Adriatic Sea between two other tourist towns, Eraclea and Bibione.

The ancient name of the city was Caprulae (possibly because of the wild goats that grazed in this area, or in honour of pagan goddess Capris); Caorle was founded in the 1st century BC by Romans. Many archeological findings confirm this attribution, for instance the sacrificial altar called Ara Licovia (Licovian Altar, from the Roman Licovi family), today housed in the cathedral. A safe zone between the estuaries of the Livenza (Latin: Liquentia) and Lemene (Latin: Romantinum) rivers, Caorle gained importance when people from Concordia Sagittaria arrived as refugees during the Barbarian Invasions. In that period a Paleo-Christian church was built, some remains of which are today kept in the cathedral's museum. In the 11th century the cathedral was built, which still stands today. It was once the seat of a bishopric. During the following centuries, Caorle became one of the nine important cities of the Republic of Venice; evidence to that effect are the many Istrian flagstones which compose some monuments in the city, and also the ancient structure of the city with bridge and canals, like a little Venice. At the end of the Republic of Venice, with the Napoleonic invasions, Caorle went into decline; the last diocesan bishop of the diocese was moved in 1807 to Chioggia and the territory of the diocese was attached in 1818 to the Patriarchate of Venice. No longer a residential bishopric, Caorle/Caprulae is today listed by the Catholic Church as a titular see.

Caorle was an important strategic location during World War I, until the Italian Army started its counteroffensive from the Piave.

Since the beginning of the 20th century the territory around Caorle has been deeply modified. Most of the woods of the "Selva Lupanica" were cut to give room to fields for cultivation, rivers were embanked, and marshes were reclaimed. This brought a landscape of wide flat areas, with no trees even along the rivers course. Along the coast, sedimentation and erosion constantly modify the scenery.

The landscape is still rather wild, with changing sandbanks and the fishing valleys.

The Cathedral of St. Stephen was built in 1038, an example of Romanesque and of the Byzantine-Ravennate style. Its façade is simple; near the central door there are two bas-reliefs (St. Agatonicus on the left, St. William on the right); the interior is organized with a nave and two side aisles, divided by pillars and columns which support semi-circular arches, and it has a truss-beam roof. It contains many masterpieces of the Venetian school of art, the most important of which is The Last Supper, painted by Gregorio Lazzarini (master of famous painter Tiepolo). The central apse has the remains of a 17th-century fresco; above the see there is the "Pala d'oro" (golden altar-piece), given by the queen Catherine Cornaro when, after a shipwreck, she found refuge in the Caprulan coasts. It is made up of a set of six panels, two for the Annunciation (Archangel Gabriel and Blessed Virgin Mary) and the other four for the prophets and Christ. From the roof, a 15th-century crucifix hangs above the modern high altar (the ancient one was sold along with many others; only four altars remain today).

Outside, the characteristic bell tower, dating to 1048, rises to a height of 48 meters. It is a typical example of Romanesque style, but it has a cylindrical structure, and it is surmounted by a cone-shaped cusp, that makes it unique in the world.

The cathedral owns a liturgical museum, inaugurated on September 13, 1975 by Patriarch Albino Luciani (future Pope John Paul I) in the old bishops' chapel; it keep vestments, altar cloths and holy vessels of the Caprulan bishops, and of the Pope John XXIII, who was very attached to Caorle since he was also Patriarch of Venice. When he became Pope, his servants were two Caprulan brothers. In the museum, there are also a precious silver "Capitular Cross", six icons of the apostles (which formed the ancient iconostasis), painted by Venetian school of art in the 12th - 13th centuries, and a silver-gold reliquary, said of "the most precious Blood", which, according to tradition, contains some of the ground on which the bleeding Jesus Christ passed before he was crucified. Another important piece of the museum is the St Stephen reliquary, which contains the skull of Saint Stephen, Patron of Caorle.