Blendecques (French pronunciation: [blɑ̃dɛk]; West Flemish: Blendeke) is a commune in the Pas-de-Calais department in the Hauts-de-France region in northern France.

[3] The town is situated 3 miles (5 km) south of Saint-Omer, at the junction of the D77, D210 and D211 roads.

The river Aa flows through the commune.

[4] The town has a football team and a basketball team.

This Pas-de-Calais geographical article is a stub.