| Snooke | Graham C. | The Rosary Farm, Meckering | U2S | 1924 |
| Snooke | J. | Meckering, Waeel, Cunderdin and Tammin | 4SJ | 1912 |
| Snooke | J. | (at Meckering, Waeel, Cunderdin and Tammin), Meckering | 4SJ | 1924 |
| Snow | A. J. | Tarling Farm, Wickepin | RP2 and 4C, 15A | 1962 |
| Snow | Alfred John | Brooklyn, Moonyoonooka | 6ZY | 1925 |
| Snow | H. A. | Grass Valley, Pingelly | 1VS | 1912 |
| Snow | H. A. | Grass Valley, Pingelly | 1SV | 1924 |
| Snow | R. | Ashton Farm, Wickepin | RS7 | 1912 |
| Snow | R. | Ashton Farm Wickepin | RS7 | 1924 |
| Snow | V. | Grass Valley, Pingelly | Z4V and 13C, 17E | 1962 |
| Snow | Victor | Grass Valley, East Pingelly | Z4V | 1924 |
| Snow & Son | W. H. | Hillside, East Pingelly | 7WS and 8B, 14E | 1962 |
| Snowball | B. | Snowview, Kondinin | 9BS and 41B, 115A | 1962 |
| Snowball | C. | 71 Stirling Street, Perth | OOS | 1924 |
| Snowball | K. | Victoria Loc. 10171, Badgingarra | K6S and 34C, 42E | 1962 |
| Snowball | K. | Plantagenet Loc. 5678, 5660, Albany | SK0 and 102C, 48E | 1962 |
| Snoxhill | W. J. | Snoxhill's Farm, Belka | VZ5 | 1924 |
| Snudden | G. A. | Uduc 8 and 14, Harvey | US1 and 18D, 17E | 1962 |
| Snudden | W. M. | Harvey | 1US | 1912 |
| Snudden | W. M. | Harvey | 1US | 1924 |
| Soafkin & Cain | | Goodwood, Nyabing | X0F | 1924 |
| Sobat | Khan | Marble Bar | 9SK | 1924 |
| Sobott | J. B. | Loc. No. 11533, Nannup | J0S and 4B, 107E | 1962 |
| Sobott | John Anton | Ellis Creek, Mill Block, Ellis Creek via Nannup | JS0 | 1928 |
| Sochachi | J. | Donkey Park, Kojonup | J8S and 17C, 40E | 1962 |
| Society of Catholic Apostolate | - | Trappist Mission, Broome | XT1 and 102C, 102E | 1962 |
| Soden | R. & Co. | Dodger's Well, Leonora | 5SS | 1924 |
| Soden | W. W. | The Willows, Greenbushes | W3S | 1912 |
| Soden & Co. | R. | Dodger's Well, Leonora | 5SS | 1912 |
| Sojan | Singh | Wandon, Dongarra | SS4 | 1924 |
| Sojan Singh | - | Wandon, Dongarra | SS4 | 1912 |
| Soldiers's Settlement Scheme | - | Caseades, Greenbushes | R6Z | 1924 |
| Soling | R. A. F. | Coopooloo, Winchester | R3X and 12C, 18A | 1962 |
| Solling | Rex A. F. | Irwin Vale, Irwin Siding | R3X | 1926 |
| Solly | Benj. John | Lot 103, Yandanooka | 6XZ | 1924 |
| Solly | C. E. | Williams 9776, 9790, Yandama, Pingrup | S3Y and 6C, 6E | 1962 |
| Solly | Edith May | Pingrup | ES7 | 1926 |
| Solly | John | Dam Sinker, Katanning | S3Y | 1912 |
| Solly | John | Katanning | S3Y | 1924 |
| Solly | K. H. | Glendale, Pingrup | 8AD and 22C, 114E | 1962 |
| Solly | S. J. | Rock Dam, Pingrup | S9S and 11B, 47E | 1962 |
| Solomon | B. & L. | Gnarming Park, Kulin, via Wickepin | N5P | 1924 |
| Solomon | E. L. | 761-3 Victoria Loc. Three Springs | ES4 and 2C, 17A | 1962 |
| Solomon | F. I. | Perangery Station, Nebree, Perenjori and Three Springs | 7UY and 22C, 18E | 1962 |
| Solomon | G. H. M. & E. G. | Yandee, Toodyay | G2S and 53F, 71C | 1962 |
| Solomon | L. A. | Petersham, Meckering | 2LS | 1912 |
| Solomon | L. A. | Petersham, Meckering | 2LS | 1924 |
| Solomon | M. | Wartook, Muchea | 8MS and 7B, 67E | 1962 |
| Solomon | M. E. | Jandakot AA 181, Melville | 7ES and 27B, 116E | 1962 |
| Solomon | Nangton & Co. | Perengarry Station, Perenjori | 7UY | 1924 |
