The A-19 is a World War 2 era towed howitzer of Soviet origin. It was used alongside the larger caliber ML-20 as a corps gun. Due to its quality it remained in use after World War 2. Vehicle mounted versions of the ordnance were used in the ISU-122 self-propelled gun and IS-2 and IS-3 heavy tanks.

The A-19 was designed as a long range weapon and is fitted with a long barreled 122mm howitzer without muzzle brake. A shield gives the crew of 9 men some protection from small arms fire over the frontal arc. The original two wheel split trail carriage used large rigid wheels. After a few years production the carriage of the ML-20 was used.

The A-19 fires 122mm shells out to 20.4 km. The rate of fire is 3 to 4 rounds per minute. If needed the A-19 can be used for direct fire, but it's size and weight make it inconvenient to use in this role. It proved to be able to knock out the latest German tanks.

Artillery tractors are used to move the A-19 since the A-19 is too heavy to be moved by hand. The improved M1937 model with the ML-20 carriage has pressurized tires and is easier to tow.

The A-19 was widely used by Soviet forces during World War 2. After the war it remained in use and was replaced by the more capable M-46. Surplus weapons were widely exported to Soviet allies and remained in use in the Middle East, Africa and Asia as late as the 1980's. Small numbers may still remain in reserve.