- J5(Joint Strategic Plans & Policy Directorate)
- J-5(Plans Directorate of A Joint Staff)
- J6(Joint Information Technology Directorate (Command, Control, Communications & Computer Systems))
- J-6(Command, Control, Communications, and Computer Systems Staff Section)
- J7(Joint Operational Plans & Interoperability Directorate)
- J-7(Engineering Staff Section)
- J-7/JED(Exercises and Training Directorate of A Joint Staff)
- J8(Joint Force Structure, Resources, & Assessment Directorate)
- J-8(Director For Force Structure, Resource, and Assessment, Joint Staff)
- J9(Joint Public Affairs Directorate (Civilian-Military Cooperation))
- J-9(Civil-Military Operations Directorate of A Joint Staff)
- JA(Judge Advocate)
- J-A(Judge Advocate Directorate of A Joint Staff)
- JA/ATT(Joint Airborne/ Air Transportability Training)
- JAA(Jalalabad Airport)
- JAAA(Jayhawk Area Agency on Aging)
- JAAR(Joint After-Action Report)
- JAARS(Joint After Action Reporting System)
- JAAS(Java Authentication and Authorization Service)
- JAAT(Joint Air Attack Team)
- JAAWS(Journal of Applied Animal Welfare Science)
- JAB(Jabiru Airport)
- JAC(Jackson Hole Airport)
