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| QUEEN ALEXANDRA'S IMPERIAL MILITARY NURSING SERVICE | |
| QUEEN ALEXANDRA'S ROYAL NAVAL NURSING SERVICE | |
| QUEEN MARY'S AUXILIARY ARMY CORPS | |
| QUEENSLAND CAMERON HIGHLANDERS | |
| QUEENSLAND LINES OF COMMUNICATION AREA | |
| QUEENSLAND MILITARY FORCES | |
| QUEENSLAND UNIVERSITY REGIMENT | |
R unit names | |
S unit names | |
T unit names | |
U unit names | |
| U BOATS | |
| U HEAVY BATTERY | |
| UN PEACEKEEPING FORCES | |
| UNAMIR - UN ASSISTANCE MISSION IN RWANDA | |
| UNIFIL - UN INTERIM FORCE IN LEBANON | |
| UNITAF UNIFIED TASK FORCE IN SOMALIA | |
| | BT UNITED NATIONS PEACEKEEPING FORCES | |
| UNITED NATIONS | |
| UNITED NATIONS PEACEKEEPING FORCES | |
| UNITED PROTESTANT ASSOCIATION | |
| UNITED STATES AIR FORCE | |
| UNITED STATES ARMY | |
| UNITED STATES ARMY VESSELS | |
| UNITED STATES FORCES | |
| UNITED STATES MARINE CORPS UNITED STATES NAVY | |
| UNITED STATES NAVY SHIPS | |
| UNIVERSITY OF NEW SOUTH WALES REGIMENT | |
| UNMCTT UNITED NATIONS MINE CLEARING TRAINING TEAM, AFGHANISTAN/PAKISTAN | |
| UNSCOM UNITED NATIONS SPECIAL COMMISSION, IRAQ | |