| Avery | A. S. & E. M. | 2333, 2307, 253, Busselton | A2Z and 20B, 19E | 1962 |
| Avery | D. T. | 21-2, Cannington | 4KR | 1962 |
| Avery | E. | 12355-6, 9394, 12397, Benjabbering | E7A and 40D, 8E | 1962 |
| Avery | E. H. | Whyandra, Moulyinning | A7L and 33B, 105A | 1962 |
| Avery | Errol Stanley | H. L. 40, Norseman | AV3 | 1924 |
| Avery | F. | Quanaminning, Wickepin | J08 and 102C, 25E | 1962 |
| Avery | f. R. | Underhills, Yoongarilup | AV6 | 1962 |
| Avery | G. C. | Murray Loc. 111 | B9Q and 22B, 28E | 1962 |
| Avery | G. C. | Blair Athol, Wickepin | KM0 and 39B, 22E | 1962 |
| Avery | H. P. | 2128, 2138, 597, 803, Busselton | 0YE and 12D, 103E | 1962 |
| Avery | L. G. | Sussex 385, Walsall, via Busselton | YQ5 | 1962 |
| Avery | L. N. | Pt. 1 Sussex Loc. 1270, 2259, Wonnerup | 4AV and 25D, 114E | 1962 |
| Avery | Mrs E. | Caves Road, Busselton | A5V | 1924 |
| Avery | P. J. & A. C. | Gabatha, Gabalong | 4AX and 38D, 104E | 1962 |
| Avery | R. S. | 929, 644, 629, Busselton | AV3 and 43C, 107E | 1962 |
| Avery | S. L. | 401, 530,605,831,839, Yoongarilup, via Busselton | SA8 | 1962 |
| Avery & Son | J. G. | 20110, 20113, Manmanning | JA4 and 46B, 30E | 1962 |
| Avon Butchering Coy. | - | York | 0NO | 1924 |
| Avon Downs Pastoral Co. | - | Avon Downs, Ardgowan, Wickepin | C3D and 20D, 29E | 1962 |
| Avondale Estate | - | Avondale, Beverley | A1Y | 1924 |
| Avondale Grazing Co. | - | Avondale, Katanning | EZ7 and 11B, 25A | 1962 |
| Axford & Ross | - | Cosino, Newbery, Nuleri District, via Laverton | 9OR | 1924 |
| Ayatoola & Morrsa | | Mia Mia Station, Carnarvon | T8K | 1924 |
| Ayers | H. e. & A. | Sussex 1817-8, 1822,2260, Busselton | LW1 and 38C, 113E | 1962 |
| Ayers | H. L. | Yungerup, Balingup | 6YY and 3C, 18A | 1962 |
| Ayers & Sons | H. B. | Walding Field, Donnybrook | N5A and 21B, 59F | 1962 |
| Ayliffe | G. St. B. | Mt. Phillip, Carnarvon | ZO1 | 1912 |
| Ayliffe | G. St. B. | Mount Phillip, Carnarvon | ZO1 | 1924 |
| Ayliffe | Mrs C. | The Cattle Station.Goondaring Lake, Wagin East | CA9 | 1924 |
| Ayliffe | Mrs. C. | The Cattle Station, Goodaring Lake, Wagin, East | CA9 | 1912 |
| Ayliffe & Oakley | - | Mt Phillip, Rangemall, via Carnarvon | OZ1 | 1912 |
| Ayliffe & Read | Percy S. & B. Winnie A. | Warraoora Station, Carnarvon | 1LX | 1924 |
| Ayling | Walter A. | Dangin | AY8 | 1924 |
| Ayling | Wm. | Emu Plains, Yuba | W5A | 1912 |
| Ayling | Wm. | Wmu Plains, Yaba | W5A | 1924 |
| Ayling & Fitzgerald | - | Mt. Jowlaenga, Derby | A8F and 2C, 84A | 1962 |
| Ayling & Stirling | - | Rockwell Farm, Ejanding | S8D | 1924 |
| Aylmore | A & H. E. | Barracup Farm, Tambellup | 9AY | 1924 |
| Aylmore | A. E. | Kiddy's Well, Gnowangerup | A7Y and 37B, 28E | 1962 |
| Aylmore | A. P. J. & L. S. | Rockville, Ockley, via Narrogin | 1ZK and 49B, 39A | 1962 |
| Aylmore | Arthur | Gnowangerup, Broomehill | AA2 | 1912 |
| Aylmore | E. G. | Gembrook, Wagin | PW6 and 31B, 13A | 1962 |
| Aylmore | F. D. & A. E. M. | Claren Vale, Lake Toolbrunup, via Tambellup | A8A and 22C, 14E | 1962 |
| Aylmore | H. G. | Hill View, Tambellup | HA8 and 37B, 38A | 1962 |
| Aylmore | H. J. & D. | Boongarra, Gnowangerup | 7HA and 12D, 46E | 1962 |
| Aylott | W. & E. B. | Avon Locs. 18880, 22629-30, Shackleton | 9DM and 49B, 13A | 1962 |
| Aylward | Thomas James | Fitzgerald Loc. 319 and 221, Grass Patch | 1XL | 1926 |
| Aylward | William Stephen | Hamel | G8A | 1926 |
| Aymore | Arthur | Gnowangerup, Broomehill | AA2 | 1924 |
| Ayout | S. N. | Broken Hill Farm, Kulin Mail, via Wickepin | AY0 | 1924 |
