The de Bange 90 mm cannon (Mle 1877) was a type of field artillery piece developed in France by Colonel Charles Ragon de Bange in 1877, and adopted by the French Army that same year.

[1] The cannon lacked a recoil system, meaning that the entire carriage moved backward when fired.

A number of these weapons were issued to some third-line British Territorial Force batteries at the start of World War I, for training and home defence duties, because of a shortage of more modern field guns.

[5] In addition to its land role the de Bange 90 mm was converted to arm DEMS (Defensively Equipped Merchant Ships) against the U-boat threat during WWI.

Conversion began in 1916 and a total of 1,740 guns were given naval mounts of which 1,430 were installed aboard French ships.