SUT may refer to:
- System Under Test in the context of software testing
- Sport Utility Truck, essentially an SUV with a truck bed
- Sport Utility Tractor, a light truck similar to a semi-truck, but smaller
- Sport Utility Trailer, a travel trailer with a garage area. Also referred to as a Toy Hauler
- H2 SUT, a model of Hummer H2
- Surface and Underwater Target, an electric driven, wire guided torpedo with active and passive homing capabilities of 53.3 cm diameter made by STN Atlas for ASW and ASuW
- Schulz Und Tegener GmbH, a German motor manufacturer
- Sharif University of Technology, an Iranian university
- Shenyang University of Technology, a Chinese university
- Solar Updraft Tower, a solar chimney power plant
- Suranaree University of Technology, a Thai university
- Swinburne University of Technology in Melbourne, Australia
- Supply and Use Table, a table part of the United Nations System of National Accounts
- Society for Underwater Technology, a learned society with international membership specialising in subsea technology, science and engineering
- Step-Up Transformer, in the context of high-end audio, turntables and cartridges
- TV Shizuoka, television station in Japan