Audruicq (French pronunciation: [odʁɥik]; West Flemish: Ouderwijk) is a commune in the Pas-de-Calais department in northern France.

[3] A town located 11 miles (18 km) southeast of Calais, at the junction of the D224 with the D309 road.

Baldwin II, Count of Flanders named it a city in 1175, rebuilding the castle and converting the surrounding marshland to tillable soil.

After continuously changing authority between the 13th century and the 17th century, Audruicq finally became a French town after the Peace of Nijmegen in 1678.

Audruicq is twinned with: Hawkhurst in Kent, England, since 1998.