| Stinton | H. H. | The Brook, Kelmscott | 0SX | 1924 |
| Stinton | R. C. | Sussex Lots 2123-4, Busselton | RS1 and 42C, 110E | 1962 |
| Stirk | Fredk. | Headingley Hills, Kalamunda | 2FS | 1924 |
| Stirling | Alex | Mountain View, Tenterden | 5VS | 1924 |
| Stirling | Alex. K | Sunnyside, via Tenterden | K97 | 1924 |
| Stirling | Bros | Backajin York | 5SB | 1924 |
| Stirling | D. | Nelson Loc.5199, Pemberton | D4S | 1962 |
| Stirling | P. & P. | Evergreen Valey, Manjimup | HSD | 1924 |
| Stirling | Peter B. | Ringwood, Pemberton | P8S | 1927 |
| Stirling & Co. | A. K. | Carinya Park, Kendenup | K9Z and 104B, 14E | 1962 |
| Stirling Bros. | - | Backajin, York | 5SB | 1912 |
| Stirling Bros. | - | Ringwood, Pemberton | P8S and 38C, 27A | 1962 |
| Stirrat | W. | Jilbadji Loc. 547-9, 552-3, 726, Muntadgin | 7SW and 56F, 50D | 1962 |
| Stirton | W. & D. | Heatherleigh, Lot 493, Waroona | 3JD | 1962 |
| Stirton | W. H. | Dwellingup Block 142, Holyoake | RQ6 | 1924 |
| Stirton | Wm. | Vict Loes, 11 And12, Yandanooka | 8XS | 1924 |
| Stoate | T. N. | Reinscourt, Busselton | K5S and 3B, 3A | 1962 |
| Stobie | Frank J | Kapbunglin Farm, Kwolyin, via Quairading | S9K | 1924 |
| Stobo & Weir | - | Clydesdale, Busselton | SW1 | 1912 |
| Stobo & Weir | - | Clydesdale, Busselton | SW1 | 1924 |
| Stock | David Wm | Malcolm Dairy Farm, Malcom | 6DZ | 1924 |
| Stock | E. J. | Kunngajen, Nungarin | 0SE | 1924 |
| Stock Department | - | Throughtout State, South Perth | S/|\D | 1962 |
| Stockdale | R. | A.1051, Perillup | SS4 and 59F, 5E | 1962 |
| Stockdale | Wm. | Woodlands, Nungarin | 6Uz | 1924 |
| Stockdale Pastral Co. | - | Stockdale, York | 3SD and 43C, 80A | 1962 |
| Stocker | Albert E. | Loc. 9476, Yanmah near Manjimup | A2S | 1927 |
| Stockes & Sons | C. E. | Wonnaminta, Narrogin | SW4 | 1924 |
| Stockley | Alice | 590 Newcastle Street, Leederville | UY1 | 1924 |
| Stockton | E. J. | Wellington Locs. 1805-6, 1828, Darkan | 7EJ and 31D, 30E | 1962 |
| Stockton | R. F. | Coolakin Park, Williams | 6FS | 1912 |
| Stockton | R. F. | Coolakin Park, Williams | 6FS | 1924 |
| Stockton | W. N. | Coolakin, 1626-7, 1800, 2969, Darkan | 6FS and 10C, 23E | 1962 |
| Stockwell | J. G. | Budgalong, Borden | J8G and 102C, 112E | 1962 |
| Stockwell & Hunter | - | Noorwood Estate via Yalgoo | S8N | 1912 |
| Stockwell & Hunter | - | Norwood Est, via Yalgoo | S8N | 1924 |
| Stodart | J. W. | Tallathalla, Waroona | TF4 and 26B and 41A | 1962 |
| Stoddart | R.J. | Barrier Orchard, Bullsbrook | XS8 | 1924 |
| Stohard & Sons | W. | Springwood, Mt. Barker | ST0 and 14B, 30E | 1962 |
| Stoitis | C. A. | 11221, Jardee | C2S | 1962 |
| Stoker | G. W. | Stockdale, Williams | 6SX and 28C, 113E | 1962 |
| Stokes | | M.1228, M.1588, Merkanooka, Via Morawa | A8S and 25B, 29A | 1962 |
| Stokes | A. H. | Victoria 9713, 8949, Morawa | A8H and 33C, 109E | 1962 |
| Stokes | A. J. | Crocherup, Ongerup | SJ1 and 15B, 116A | 1962 |
| Stokes | B. J. | Connemara, Tammin | BS0 and 27D, 18E | 1962 |
| Stokes | C. J. | 18795, Corrigin | C5S and 15B, 36E | 1962 |
| Stokes | C. J. & E. | Hillside, East Chapman | ZV0 and 46B, 16E | 1962 |
| Stokes | C. L. | 1486, 2692, 2835, 807, 895, 783, South Greenough | S5L and 10C, 7E | 1962 |
| Stokes | C. R. | Hillside, Morawa | 2CS and 39B, 111E | 1962 |
| Stokes | Charles Albert | Billers, Kirup | GS7 | 1926 |
