Aerospace
- Airlines
- Jet Airways, an airline based in India serving domestic and international routes
- JetLite, a subsidiary of Jet Airways
- JetBlue Airways, an airline based in New York
- Jetel, a defunct Canadian airline
- Jetstar Airways, an Australian airline servicing domestic and international routes
- Windjet, an Italian airline, ICAO code "JET"
- Other
- jet aircraft
- jet engine
- rocket engine
Read more about this topic: Jet