Agde is a commune in the Hérault department in southern France. It is the Mediterranean port of the Canal du Midi.

Agde is located on the river Hérault, 4 kilometres (2 miles) from the Mediterranean Sea, and 750 kilometres (466 miles) from Paris. The Canal du Midi connects to the Hérault at the Agde Round Lock ("L'Écluse Ronde d'Agde") just above Agde and flows into the Mediterranean at Le Grau d'Agde.

Agde (525 BC) is one of the oldest villages in France, right behind Béziers (575 BC) and Marseille (600 BC). Agde (Agathe Tyche, "good fortune") was a 5th-century BCE Greek colony settled by Phocaeans from Massilia. The symbol of the city, the bronze Ephebe of Agde, of the 4th century BCE, recovered from the fluvial sands of the Hérault, was joined in December 2001 by two Early Imperial Roman bronzes, of a child and of Eros, which had doubtless been on their way to a villa in Gallia Narbonensis when they were lost in a shipwreck.