| | | |
| NORTH SHORE REGIMENT | |
| NORTH SYDNEY REGIMENT | |
| NORTH VIETNAMESE FORCES | |
| NORTH WEST MURRAY BORDERERS | |
| NORTH WESTERN VICTORIAN REGIMENT | |
| NORTHERN COMMAND | |
| NORTHERN RIVER LANCERS | |
| NORTHERN TERRITORY FORCE | |
| NORTHERN TERRITORY FORCE ORDNANCE WORKSHOP | |
| NORTHERN TERRITORY LINES OF COMMUNICATION AREA | |
| NORTHERN VICTORIAN REGIMENT | |
| NORTHWESTERN AREA | |
| NSW AMC | |
| NSW L OF C AREA | |
| NSW MR | |
| NSW SCOTTISH REGIMENT | |
| NSWMF | |
| NW CMD | |
O unit names | |
| OCUS | |
| OFFICER CADET TRAINING UNITS | |
| OFFICER TRAINING UNITS | |
| OPERATION HABITAT, IRAQ | |
| OPERATIONAL CONVERSION UNITS | |
| OPERATIONAL TRAINING UNITS | |
| OPERATIONAL TRAINING UNIT, BAIRNSDALE | |
| OPERATIONAL TRAINING UNIT, EAST SALE | |
| OPERATIONAL TRAINING UNIT, MILDURA | |
| OPERATIONAL TRAINING UNIT, TOCUMWAL | |
| OPERATIONAL TRAINING UNIT, WAGGA WAGGA | |