| WA Land Information System | Community Services, Government - State | Midland | 6056 | WA |
| WAGAIT SHIRE COUNCIL | Government - Local | Darwin | 801 | NT |
| WAGGA WAGGA CITY COUNCIL | Government - Local | Wagga Wagga | 2650 | NSW |
| WAGIN SHIRE COUNCIL | Government - Local | Wagin | 6315 | WA |
| WAKEFIELD REGIONAL COUNCIL | Government - Local | Balaklava | 5461 | SA |
| WAKOOL SHIRE COUNCIL | Government - Local | Moulamein | 2733 | NSW |
| WALCHA COUNCIL | Government - Local | Walcha | 2354 | NSW |
| WALGETT SHIRE COUNCIL | Government - Local | Walgett | 2832 | NSW |
| WALKERVILLE, CORPORATION OF THE TOWN ... | Government - Local | Walkerville | 5081 | SA |
| WANDERING SHIRE COUNCIL | Government - Local | Wandering | 6308 | WA |
| WANGARATTA RURAL CITY COUNCIL | Government - Local | Wangaratta | 3677 | VIC |
| WANNEROO CITY COUNCIL | Government - Local | Wanneroo | 6946 | WA |
| Wannon Water | Government - State | Warrnambool | 3280 | VIC |
| WARATAH-WYNYARD COUNCIL | Government - Local | Wynyard Tasmania | 7325 | TAS |
| Water Corporation | Government - State | Leederville | 6007 | WA |
| Watercare | Government - State | Adelaide | 5000 | SA |
| Waterwatch NSW | Government - State | Parramatta | 2124 | NSW |
| Waterwatch SA | Government - State | Flinders Park | 5025 | SA |
| Waterwatch Victoria | Government - State | East Melbourne | 3880 | VIC |
| WELLINGTON COUNCIL | Government - Local | Wellington | 2820 | NSW |
