Bainghen (; ) is a commune in the Pas-de-Calais department in the Hauts-de-France region of France.
A small farming commune, some east of Boulogne, at the junction of the D206 and the D206e roads.
The Chemin de fer de Boulogne ÃÂ Bonningues (CF de BB) opened a station at Bainghen on 22 April 1900. Passenger services were withdrawn on 31 December 1935. They were reinstated in November 1942. The CF de BB closed in 1948.