Landerneau (French pronunciation: [lɑ̃dɛʁno]; Breton: Landerne, pronounced [lãnˈdɛrne]) is a commune in the Finistère department of Brittany in north-western France.

It lies at the mouth of the Elorn River which divides the Breton provinces of Cornouaille and Léon, 22 km (14 mi) east of Brest.

The name is from Lan Terneo and can mean "(religious) enclosure of St Ténénan (Welsh: Tyrnog)": allegedly a Welshman who also had llans in the Vale of Clwyd in North Wales and in Somerset, and who moved to Brittany in the 7th century.

His first store applies a hard competition with other supermarket chains with local made products and lower prices.

The Breton noble made reference to a big silver metal disc on top of the Saint Houardon Church, well known in the surroundings as "the moon of Landerneau".

A picturesque feature of the town centre is the sixteenth-century house-lined bridge (the Pont de Rohan) across the Elorn.

The first theory is from a 1796 theater drama, "Alexandre Duval's Les Héritiers", after a famous sailor declared dead is back to his hometown, Landerneau.