Samokhodnaya Ustanovka (SU) may refer to any of these Soviet self-propelled guns:
* SU-8, experimental SPG on the chassis of the T-28 tank
* SU-14, a prototype heavy self-propelled gun built on a T-35 chassis
* SU-26, a self-propelled gun of an open-top design
* SU-76, a self-propelled gun used during and after World War II
* SU-85, a self-propelled gun used during World War II, based on the chassis of the T-34 medium tank
* SU-100, a tank destroyer armed with a powerful 100 mm anti-tank gun in a casemate superstructure
* SU-122, a self-propelled howitzer or assault gun used during World War II
* SU-152, a self-propelled heavy howitzer used during World War II
* ZSU, a Soviet self-propelled anti-aircraft weapon
* ASU-57, a small, lightly constructed airborne assault gun