Lessay (French pronunciation: [lɛsɛ]) is a commune in the Manche department in north-western France.

On 1 January 2016, the former commune of Angoville-sur-Ay was merged into Lessay.

[3] Lessay is a small town in the centre of the Cotentin Peninsula, Normandy.

It was founded as a monastery but a town grew up around it over the years.

The 10th-century Lessay Abbey is one of the greatest examples of Romanesque architecture in Normandy.