A gas lighter that includes a valve that connects to a nozzle, a lever for controlling the opening of the valve, a piezoelectric system that includes a first and second electrode, where the first electrode is arranged downstream and on the side in relation to the nozzle, and a control member adapted to drive the opening of the valve and the creation of an electric arc when it is actuated. The second electrode is formed by a projection integral with the lever, the projection being made of electrically-conductive material. The top of the projection is arranged downstream of the nozzle and is substantially opposite the first electrode in relation to the central axis (Z) of the nozzle during the actuation of the control member in order to be at a distance from the first electrode.