AST
AST is a three-letter abbreviation that stands for a number of different things.
- In medicine it refers to the enzyme aspartate transaminase.
- In computer science it means abstract syntax tree.
- AST Research, Inc manufactured personal computers between 1980 and 1999. The name was then owned by AST Computers, LLC.
- In aviation, it means Advanced Supersonic Transport.
- AST is an abbreviation for the time zone Atlantic Standard Time.