SRT may stand for:

• State Railway of Thailand, Thailand's state-owned railway operator
• Street and Racing Technology, DaimlerChrysler's SRT performance tuning engineering group, produces high performance vehicles
• SRT division algorithm
• Single Rope Technique - a method used in caving and potholing to descend and ascend vertical drops.
• SRT - Singapore Repertory Theatre
• Special Relativity Theory
• Standard Radio & Telefon AB was a Swedish computer manufacturer, they developed an advanced mainframe as well as a computer terminal called Alfaskop that became an export success. A bit much of a success, since an export of a system for air traffic control to Moscow caused a diplomatic incident.
• Silver Ring Thing US-based sexual abstinence program
• SubRip subtitle file format for video subtitles.
• Scarborough RT
• Sludge Retention Time
• Special Response Team
• Special/(Primary) Response Teams in the game Full Metal Panic - A fictional combat unit

SRT