J: Juliet
J-DEC: JICPAC-Detachment Japan
J-TENS: Joint Tactical Exploitation of National Systems
J-TRWS: Joint TESS Remote Workstation
J/T: Junior Technician
J4/LRC: Joint Logistics Readiness Center
JA: Judge Advocate
JAADS: Joint Allied Air Defense System
JAAT: Joint Air Attack Team
JAAWIN: Joint Air Force-Army Weather Information Network
JaboG: Jagdbombengeschwader

JAC: Joint Analysis Center
JACC: Joint Airborne Communications Center
JACC/CP: joint airborne communications center/command post
JAD: Joint Assessment Data
JAEIC: Joint Atomic Energy Intelligence Committee
JAG: Joint Action Group
JAG: Judge Advocat General

JAG: Judge Advocate General
JAI: Joint Administrative Instruction
JAIEG: Joint Atomic Information Exchange Group
JAIS: Japan Air Intelligence System
JAMIP: Joint Analytic Model Improvement Program

JAN: Joint Army-Navy
JANAF: Joint Army, Navy, Air Force Publication
JANAP: Joint Army/Navy Publication
JANNAF: Joint Army, Navy, NASA, Air Force
JAO: Joint Area of Operations
JAOC: Joint Air Operations Center
JAOP: Joint Air Operations Plan
JAPC: Joint Attrition and Penetration Committee
JAPIC: Joint Air Photographic Interpretation Centre
JAR: JIC Analysis Report
JARCC: joint air reconnaissance control center
JARIC: Joint Aerial Reconnaissance Intelligence Center
JARIC: Joint Air Reconnaissance Intelligence Centre
JARIC: Joint Air Reconnaissance Interpretation Center
JAROC: Joint Allied Refugee Operations Center
JARP: Joint Aerospace Reserve Program
JASDF: Japanese Air Self-Defense Forces