The SU-12 (Russian: СУ-12) self-propelled gun battery (gun truck) was created in 1934 by the Union of Soviet Socialist Republics by mounting a 76 mm regimental gun M1927 onto a modified GAZ-AAA truck, and was in production from 1933 to 1935.

It had a four-man crew, including the driver, and the gun could rotate 270 degrees.

This was corrected in the SU-1-12 model which added a front shield and roof armor of 4mm thickness.

Most SU-12 units were decommissioned by 1938, but the Su-1-12 models served in the Battle of Lake Khasan, the Battles of Khalkhin Gol, and in the Winter War against Finland.

[1][3] By 1941 only 3 were left in service and had been supplanted by tracked SPGs.