The Caudron C.23 was a French long range twin engine night bomber, flown in the last year of World War I. Post-war some machines were modified to carry passengers.

It was a large five bay biplane, with fabric covered, constant chord, unswept wings with angled tips.

There was no stagger, so the sets of parallel interplane struts were vertical; flying wires braced each bay.

The tailplane, angular in plan and of very low aspect ratio, was mounted on top of the fuselage and its elevators had cut-outs for rudder movement.

[1] The bomber had a fixed tailskid undercarriage, with mainwheels in pairs, their axles mounted on longitudinal bars attached to the wing, under the engines, by N-form struts.