Eraclea (Italian pronunciation: [eraˈklɛːa]) is a small city and comune in the Metropolitan City of Venice, Veneto, northern Italy. It is located on the Adriatic coast between the towns of Caorle and Jesolo.

The Republic of Venice had its capital based in Eraclea from its founding until 742 AD, when it was replaced by Malamocco. According to Greek mythology, it was founded by the hero and demi-god Heracles.

Eraclea Mare is, together with Jesolo and Caorle, one of the main seaside resorts on the Venetian coast facing the Adriatic Sea. A steady growth of foreign tourists, especially from Germany, has been recently recorded.

In 2009, Eraclea Mare was awarded the "3 Sails" by the environmental NGO Legambiente. The city was awarded the "Blue Flag" by the Foundation for Environmental Education every year from 2007 to 2017 for the cleanliness of its beaches and seawater.

Eraclea Mare is known for its pinewood and the Laguna del Mort 'Lagoon of the Dead'. The Lagoon, an unusual natural formation, was caused by the overflowing of the Piave river in 1935, whose bed was modified in its last stretch after a large flood. The Lagoon stretches between the Eraclea's Lido and the mouth of the Piave river and it is a sea-lagoon, being supplied with water only by the flood-tides. Still uncontaminated, the Mort is characterized by shallow and calm waters with a sandy and muddy seabed, rich in phytoplankton.

The city's economy is mostly based on agriculture and tourism, because of its 6 km-long beach (Eracleamare).

The town is served by Trenitalia services to Venice and Trieste from San Donà di Piave, and by Venice Marco Polo Airport and Treviso Airport to the west and south, respectively.

By road, Eraclea is accessible from Venice via the A4 through San Donà di Piave to the north.