Westrehem (French pronunciation: [wɛstʁ(ə)ɛm]) is a commune in the Pas-de-Calais department in the Hauts-de-France region of France[3] about 12 miles (19 km) west of Béthune and 34 miles (55 km) southwest of Lille.

It is surrounded by the communes of Ligny-lès-Aire, Fontaine-lès-Hermans and Febvin-Palfart.

Westrehem is located 16 km northwest of Bruay-la-Buissière, the largest nearby city.

Barry Or and azure, in chief in fess 3 annulets gules.

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