| | | |
| ORDNANCE PROVISION SECTIONS | |
| ORDNANCE SMALL CRAFT PARKS | |
| ORDNANCE STORE COMPANIES | |
| ORDNANCE UNITS | |
| ORDNANCE VEHICLE PARKS | |
| OTU BAIRNSDALE | |
| OTU EAST SALE | |
| OTU MILDURA | |
| OTU TOCUMWAL | |
| OTU WAGGA | |
| OTU WILLIAMTOWN | |
| OTUS | |
| OXLEY REGIMENT | |
P unit names | |
| PACIFIC ISLANDS DEPOT BATTALION | |
| PACIFIC ISLANDS REGIMENT | |
| PACK TRANSPORT COMPANIES | |
| PAPUAN INFANTRY BATTALION | |
| PARATROOP UNITS | |
| PARRAMATTA AND BLUE MOUNTAINS REGIMENT | |
| PAY UNITS PERSIAN FORCES | |
| PERSONNEL MOVEMENT UNITS | |
| PETROL SUPPLY UNITS | |
| PHILANTHROPIC ORGANISATIONS | |
| PHOTOGRAPHIC INTERPRETATION UNITS | |
| PHOTOGRAPHIC RECONNAISSANCE UNITS | |
| PHOTOGRAPHIC UNITS | |
| PHYSICAL AND RECREATION TRAINING SCHOOL, FRANKSTON | |
| PIONEER TRAINING BATTALION | |
| PIONEER UNITS | |