STAR is an acronym for:

• Satellite Television Asian Region, or STAR TV
• Scientific and Technological Advanced Research Labs, a fictional research organization in the DC Comics universe.
• Single-Handed Trans-Atlantic Race, also known as the OSTAR
• Situation, Task, Action, Result, an interview technique
• Shock Trauma and Rescue, or Shock Trauma Air Rescue, a synonym for air ambulance
• Society for Telescopy, Astronomy, and Radio, a non-profit New Jersey astronomy club.
• Solenoidal Tracker At RHIC, one of the four detectors at the RHIC
• Source tree adaptive routing protocol, a method of organizing wireless mesh networks
• Special Tactics and Rescue of the Singapore Police Force
• Special Tactics and Response, a synonym of SWAT
• Special Tasks and Rescue, a synonym of SWAT
• Standard Terminal Arrival Route, the route that planes follow under instrument flight rules when they approach an airport
• Standardized Testing and Reporting, a measure of school performance in California
• Star (strategies + architecture), an architecture office in the Netherlands
• STAR Math, STAR Reading, or STAR Early Literacy--periodic assessments of mathematical, reading, and early literacy abilities, respectively, created by Renaissance Learning, Inc. The acronym, which used to refer to reading, lost its meaning with the release of STAR Math.
• STAR Repair, the Best Buy Repair and Service Database, based on Clarify eFrontOffice
• S.T.A.R.S.; Special Tactics And Rescue Service, a fictional task force in the Resident Evil video game franchise
• Students Taking Action with Recognition, in STAR Events. A Program in FCCLA.
• Supplementary Tests of Achievement in Reading published by the New Zealand Council for Educational Research
• STAR, an interbank network
• StAR, the steroidogenic acute regulator protein