Airlines — J
- JNAJin Air
- TQMJM Family Aviation
- JMCJMC Airlines
- JDGJoanas Avialinijos
- JHNJohnson Air
- JONJohnsons Air
- JMJJohnston Airways
- JMMJoint Military Commission
- JMTJomartaxi Aereo
- ODIJonsson
- JAVJordan Aviation
- JCIJordan International Air Cargo
- JVKJorvik
- ENZJota Aviation
- JOYJoy Air
- JSJJS Air
- JESJS Aviation
- JURJu-Air
- JFSJuanda Flying School
- JUCJuba Cargo Services & Aviation Company
- JUBJubba Airways
- DKEJubilee Airways
- DKHJuneyao Airlines
- JPUJupiter Airlines
- MEYJustair Scandinavia
- DOJJustice Prisoner and Alien Transportation System
- JSRJusur airways