Vanadium) is a single-action and double-action Polish semi-automatic pistol, chambered for the 9×18mm Makarov cartridge and designed by Ryszard Chełmicki and Marian Gryszkiewicz of the state research institute Ośrodek Badawczo-Rozwojowy in Radom.

There is a manual safety lever on the left side of the slide with the upward position being "Safe" and the lower position being "Fire" (there is a red dot on the slide which is hidden by the safety when in "Safe").

The P-83 has a traditional European heel magazine release and a lanyard loop on the left side at the base of the grip.

The magazine release is tensioned by the hammer spring as a simplification measure.

Civilian guns have different shaped sights, a rounded hammer and different markings on the slide: a Polish eagle followed by “RADOM wz.