| Salmon & Lowe | - | Silverton, Jennacubbine | 9ZU | 1924 |
| Salmond, Rust, & Menmuir | - | Omalindi Leases 2073-4-5/98, Derby | 5RZ | 1924 |
| Salom | A. L. | Gunyah, Brunswick Junction | 7AS and 15B, 21A | 1962 |
| Salom | Alfred | Gunyah, Brunswick Junction | 7AS | 1928 |
| Salt | Robt. | Mill Site, Lion Mill | V7Z | 1924 |
| Salter | C. T. | Marinup, Pinjarra | 5CS | 1912 |
| Salter | C. T. | Marrinup, via Pinjarra | 5CS | 1924 |
| Salter | C. T., jun. | Meelon, via Pinjarra | 7TZ | 1924 |
| Salter | F. M. | Lots 85 and 92, Peel Estate, Jandakot | N9Z | 1924 |
| Salter | F. M. | Lot 1011, Loc. 25, Riverton | N9Z | 1962 |
| Salter | G. F. | Leases 38765/55, 22395/74, Kondinin | ZF6 | 1924 |
| Salter | George F. | Inering Lot 5, Carnamah | Y4Z | 1924 |
| Salter | R. J. | Koolami, Pinjarra | 2JU and 48D, 15E | 1962 |
| Salter | R. P. & R. | Hillandale, Pinjarra | 7TZ and 58F, 15B | 1962 |
| Salter | W. E. | Homebush, Mortigallup P. O., Tenterden | 4SL | 1912 |
| Salter | W. E. | Homebush, Mortigallup P.O., via Tenterden | 4SL | 1924 |
| Salvage | A. S. | Everington, Lake Magenta, via Newdegate | SV3 and 50B, 46A | 1962 |
| Salvation Army | - | Settlement, Collie | S7A | 1912 |
| Salvation Army | - | Settlement, Collie | S7A | 1924 |
| Salvation Army | - | Salvation Army Training Farm, Gosnells | S7A and 16B, 55F | 1962 |
| Samad | Khan | Coolgardie | 8SK | 1924 |
| Sambell | H. A. | Moss Vale, Bridgetown | 9HS | 1912 |
| Sambell | H. A. | Moss Vale, Bridgetown | 9HS | 1924 |
| Sambell | K. S. & P. J. | Waratah, Ninniup | S7U and 110D, 36E | 1962 |
| Sambell | S. L. | Cloverdale, Nelson 5231, 3937, Dinninup | L5S and 17B, 32E | 1962 |
| Sambell & Co. | F. R. | Glen Avon, Boyup Brook | F1U and 36B, 20A | 1962 |
| Same | L. | New Market, Boddington | P7K and 19C, 8E | 1962 |
| Same | M. & B. | Lot 18, Pinjarra | 4SP and 50C, 10E | 1962 |
| Same | N. (Dr.) | New Market, Boddington | 7NS and 40B, 71A | 1962 |
| Same | P. & B. | Glenwon M.1702, M.1499, Cunderdin and Muchea | L0Q and 42B, 32A | 1962 |
| Same & Fleisher | - | No Wandering, Pinjarra | HS1 and 22C, 116E | 1962 |
| Samelowitz | L. | Goomalling | IS1 | 1926 |
| Samelowitz | Leon | Box 3, Goomalling | SS7 | 1928 |
| Sampson | Albert Ed. | Capel Medows, Kirup | 2ZU | 1924 |
| Sampson | C. | Block 220, Jandakot | 1SV | 1962 |
| Sampson | Frederick | Upper Capel Est. No. 2542, Glen Capel, via Kirup | ZF9 | 1924 |
| Sampson | H. B. | Loc. 2806, Quinangelup, Mt. Barker | 4SN and 36B, 46A | 1962 |
| Sampson | H. C. | Marbelling, Tammin | S5N | 1912 |
| Sampson | H. C. | Marbelling, Tammin | S5N | 1924 |
| Sampson | J. | Commonage, Brown Hill | SJ7 | 1912 |
| Sampson | J. | Brown Hill | SJ7 | 1924 |
| Sampson | J. L. | Loc. 13 Lots 318-9, Maddington | 4JS | 1962 |
| Sampson | R. C. | Kooringa Downs, Esperance | X6S and 11C, 38A | 1962 |
| Sampson | S. A. & E. D. | 5159 and 5165, West Wagin | S2S and 30B, 103A | 1962 |
| Sampson & Sons | W. C. | Gilmoreton Farm, Esperance | X6S and 11C, 38A | 1962 |
| Samsa | J. | Loc. 10955, Greenbushes | S9J and 11B, 103A | 1962 |
| Samsa | J. F. | Washaway 10954, Greenbushes | SO8 | 1962 |
| Samsa | M. F. | Sunnyside, Balingup | SZ5 | 1962 |
| Samson | J. S. | Lauriana, Esperance | 9JS and 50D, 5E | 1962 |
| Samson | Kate | Clayton, Bellevue. Rocklands, Yalgoo | KS1 | 1912 |
