The Tatra OA vz.30 was a Czechoslovak armored car of the interwar period. The first prototypes were built in the early 1930s, and mass production lasted from 1933 to 1934, culminating in 51 vehicles. The vehicle was powered by a single 32 hp Tatra 71 T-52 engine. Armament consisted of two 7.92 mm ZB vz.26 machine guns.

The Tatra OA vz.30 armored car was designed as a successor to the OA vz.27. From 1934 to 1939, it was the primary vehicle of its type in the Czechoslovak army. It was based on the chassis of the Tatra T-72 truck. The Tatra OA vz.30 featured a three-axle chassis, topped by a hull protected by armor plates up to 5.5 mm thick. The armament was housed in a rotating turret on top of the hull and in the front, near the driver's station. After the dissolution of Czechoslovakia, vehicles of this type entered service with Slovakia, Romania, Hungary, and—possibly—Germany. Within the Slovak armed forces, Tatra OA vz.30 vehicles played a marginal role in the September Campaign of 1939 and in the first months of Operation Barbarossa in 1941.