Port du Légué, Maritime port in Saint-Brieuc and Plérin, France.

Port du Légué is a commercial harbor situated along the Gouët River, featuring working docks and a marina accommodating around 200 boats. The facility includes repair and maintenance infrastructure designed to service larger fishing and commercial vessels.

During the Second World War, German forces arriving on 18 June 1940 turned the port's lock into a military and administrative Hafenkommandantur, filtering goods entering the harbour. In 1915 the Chaffoteaux brothers, fleeing the invaded Ardennes, set up a boiler factory in the former Sébert foundry on the port, producing shells and locomotive parts during the First World War. That workshop was the origin of Chaffoteaux et Maury, later bought by Italy's Ariston Thermo in 2001, which closed the Ploufragan plant in 2009.

The port's Breton name is al Lege, and its quays host the lougre Le Grand Léjon, a traditional sailing boat kept as maritime heritage. The Chaffoteaux brothers, refugees from the Ardennes in 1915, set up a boiler factory in the former Sébert foundry here, making shells and locomotive parts during the First World War.

The port welcomes private sailing and power boats up to 59 feet (18 meters) with a maximum draft of around 10 feet (3 meters). Maintenance services are available on-site, making it convenient for visiting boaters to service their vessels.

The port handles a diverse range of goods including animal feed, lumber, and fertilizers for imports, while exporting minerals and grains. This variety reveals how the harbor serves as a crossroads for different types of regional trade.