Ardres (French pronunciation: [aʁdʁ]; West Flemish: Aarden; Picard: Arde) is a commune in the Pas-de-Calais department in northern France.

Ardes was located next to the Pale of Calais, held by the English from 1346 to 1558, and as a result was an important trading and military post.

The 1520 meeting between Henry VIII of England and Francis I of France known as the Field of the Cloth of Gold was held just over the border at the English-controlled town of Balinghem.

Major tourist attractions at Ardres include the Chapelle des Carmes and the Eglise Notre Dame de Grâce.

The Chemin de fer d'Anvin à Calais opened a railway station at Ardres in 1881.