JST
JST stands for:
- British Aerospace Jetstream 31/32/41 , variants of the aircraft type Handley Page Jetstream (IATA aircraft type code)
- Japan Science and Technology Agency , Japanese institution for the advancement of science
- Japan Solderless Terminals , manufacturer of electromechanical components
- Japan Standard Time , the time zone used in Japan
- Jetstar Airways , an Australian airline (ICAO code)