SU-100 - Soviet anti-tank self-propelled artillery mount of the Second World War period, a class of tank destroyers, medium in weight. It was created on the basis of the T-34-85 medium tank by the Uralmashzavod design bureau in late 1943 - early 1944 as a further development of the SU-85 ACS due to the latter's insufficient capabilities in the fight against German heavy tanks. Serial production of the SU-100 was launched at Uralmashzavod in August 1944 and continued until early 1948. In addition, in 1953-1956, its production under the designation SD-100 under a Soviet license was carried out in Czechoslovakia. A total of 770 installations were collected there. In total, 4011 self-propelled guns of this type were produced in the USSR and Czechoslovakia.

The first combat use of the SU-100 took place in January 1945, and later the SU-100 was used in a number of operations in the Great Patriotic War and the Soviet-Japanese War, but in general, their combat use was limited. After the war, the SU-100 was repeatedly modernized and remained in service with the Soviet army for several decades. SU-100s were also supplied to the allies of the USSR and participated in a number of post-war local conflicts, including the most active - during the Arab-Israeli wars. By the end of the 20th century, the SU-100 was withdrawn from service in most of the countries that used it, but, nevertheless, in some of them, as of 2007, it is still in service.