| Code | Name | Region |
|---|---|---|
| AUOCN | O'connor | WA |
| AUOPI | Oenpelli | NT |
| AUS4E | Officer | VIC |
| AUOKH | Okha Fpso | WA |
| AUOLP | Olympic Dam | SA |
| AUOPH | Onkaparinga Hills | SA |
| AUONS | Onslow | WA |
| AUNTE | Northern Endeavour | NT |
| AUNGT | Northgate | QLD |
| AUNOM | Northmead | NSW |
| AUR5W | Northwood | NSW |
| AUMMT | Norton Summit | SA |
| AUNOR | Norwood | SA |
| AUNTH | Notting Hill | VIC |
| AUNOA | Nowra | NSW |
| AUNUK | Nulkaba | NSW |
| AUNLL | Nullagine | WA |
| AUNUR | Nullarbor | SA |
| AUNUB | Numbulwar | NT |
| AUNUM | Numurkah | VIC |
| AUNWD | Nunawading | VIC |
| AUNDH | Nundah | QLD |
| AUNRP | Nurioopta | SA |
| AUNOO | Nuriootpa | SA |
| AUS3N | Nutfield | VIC |
| AUUTD | Nutwood Downs | NT |
| AUNYA | Nyah | VIC |
| AUNBW | North Balwyn | VIC |
| AUNBQ | North Beach | WA |
| AUNB2 | North Bridge | NSW |
| AUNCC | North Curl Curl | NSW |
| AUNFM | North Fremantle | WA |
| AUGGN | North Geelong | VIC |
| AUNVN | North Haven | SA |
| AUNLE | North Lismore | NSW |
| AUNM2 | North Manly | NSW |
| AUNME | North Melbourne | VIC |
| AUNNN | North Narrabeen | NSW |
| AUNRD | North Richmond | NSW |
| AUNRC | North Rocks | NSW |
| AUNRE | North Ryde | NSW |
| AUNSY | North Sydney | NSW |
| AUNTB | North Tamborine | QLD |
| AUT8R | North Turramurra | NSW |
| AUNHA | Northam | WA |
| AUNTF | Northcliffe | WA |
| AUS3B | Northcote | VIC |
| AUNST | Newstead | TAS |
| AUVIC | Newtown | VIC |
| AUNGH | Nganhurra | WA |