Camblain-Châtelain (French pronunciation: [kɑ̃blɛ̃ ʃatlɛ̃]) is a commune in the Pas-de-Calais department in the Hauts-de-France region of France.

[3] Camblain-Châtelain is a farming and light industrial village some 7 miles (11 km) southwest of Béthune and 33 miles (53 km) southwest of Lille, at the junction of the D341 and the D70 roads, by the banks of the river Clarence.

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