The 3,7 cm KPÃÂV vz. 34 () (designated 3,7 cm PaK 34(t) in German service) was an anti-tank gun produced by the à  koda Works in Czechoslovakia. à  koda's own designation for it was A3. It is not known if guns seized by Germany after the occupation of Bohemia-Moravia saw service in World War II. Slovakia acquired 113 when it declared independence from Czechoslovakia in March 1939.
It was designed to a Czech Army requirement to penetrate of armor at in 1934. It also fired a HE shell out to a maximum range of . The gun had a small shield and wooden-spoked wheels, although some were fitted with pneumatic wheels.
The ÃÂV vz. 34 fired a armor-piercing shell at a velocity of . The vz.34 comprised the main armament of a number of Czech/German armored vehicles.
Armored vehicles:
<nowiki>*</nowiki>Another source quotes penetration of a vertical plate of thick armor at .