| Sawyer | James H. | Dalwallinu | U0Z | 1924 |
| Sawyer | John Chas. | Dalwallinu | 3ZU | 1924 |
| Sawyer | N. B. | Glenvale, Wilgarup | NV0 | 1924 |
| Sawyer | N. V. | Toothill, Goomalling | 6YU and 110B, 29A | 1962 |
| Sawyer | R. A. | Glenside, Goomalling | 8CW and 30D, 47E | 1962 |
| Sawyer | S. A. & D. A. | Waterloo, Yornup | 1SD and 118B, 22A | 1962 |
| Sawyer | Samuel A. | Hillside Farm, Palgarrup, via Bridgetown | 4SY | 1924 |
| Sawyer | T. E. & J. M. | Avon 18395, 22390, 18425, Goomalling | 0NF and 3B, 20A | 1962 |
| Sawyer | Thos. Geo. | Toothill Farm, Bolgart | 6YU | 1924 |
| Sawyer | W. | Wimmera Farm, Dalwallinu | 2US | 1924 |
| Sawyer | W. H. | Block 1664, Dalwallinu | U8S | 1924 |
| Sawyer & Sons | W. H. | Winimera Farm, Dalwallinu | U0Z | 1962 |
| Saxby | W. E. | Tytings, Moorine Rock | 6BY and 8B, 47A | 1962 |
| Sayer | H. O. | Endomoore Station, Mollerin | 7HS and 32D, 110E | 1962 |
| Sayer | Harry | Corralinga Farm, Bendering | 7QS | 1924 |
| Sayer | M. L. | Endomoore, Mollerin | S0Z and 33B, 107A | 1962 |
| Sayers | Charles H. | Hiltondale, P. O., Busselton | P9Q | 1925 |
| Sayers | D. M. & H. G. | Sussex 301, 335, 126, 45 Pt. 872, Amber Gate, via Busselton | 4EZ and 3C, 106E | 1962 |
| Sayers | R. | Floradella, Mundijong | S8Y | 1912 |
| Sayers | R. | Floradella, Mundijong | S8Y | 1924 |
| Sayers | R. D. | Dookaling, Miling | N9G and 31B, 11A | 1962 |
| Sayers | W. A. | Grove Farm, Peel Estate | 3XZ | 1924 |
| Saysell | J. E. C. | Spondon Grange, Narembeen | JS0 and 28C, 118E | 1962 |
| Saysell | P. J. E. | The Grange, Graball | PZ6 | 1924 |
| Scabrook | C. W. | Seabourne, Greenhills | WY0 | 1912 |
| Scaddan | A. D. | Avon Locs. 14985, 19282, 24996, 25015, Cunderdin | SJ4 and 50C, 11E | 1962 |
| Scaddan | H. S. | Lake Brown | K3Z | 1924 |
| Scaddan | N. E. | 2489, 2490, Courtney, via Karridale | Q4L and 17D, 116E | 1962 |
| Scaddan | Richard J. | Group 14, Tutunup | JS2 | 1927 |
| Scadden | Jas. Eliot | Avon Loc. 14337, Lake Brown | 3QZ | 1924 |
| Scadding | A. E. | Paradise, Kulin | PA5 and 12D, 102E | 1962 |
| Scadding | Est. of the late W. W. M. | Kilfinane, Kuline | PA5 and 12D, 102E | 1962 |
| Scadding | W. C. A. | Shaster Downs, 755, Esperance | S8D and 113D, 28E | 1962 |
| Scadding | Walter | 10213, 10217 Locs., Wangumma, via Kulin | Y9U | 1925 |
| Scadding & Sons | W. | Myakowa, Kulin | A2S and 13B, 41E | 1962 |
| Scahill | Bernard | Burbanks | BS4 | 1912 |
| Scahill | Bernard | Burbanks | BS4 | 1924 |
| Scahill | E. | Pastoral Leases, Burbanks | BS4 | 1926 |
| Scale | Morley B. | Upper Cardup, Beenup | S0S | 1912 |
| Scale | Morley B. | Upper Cardup, via Byford | S0S | 1924 |
| Scally | A. J. | Harwood Farm Locs. 23860, 18842, East Pingelly | ST3 | 1962 |
| Scally | W. H. P. | Bean Ord, Wagin | 5SP and 84C, 54F | 1962 |
| Scally | Winifred | Swamp Farm, Newcastle | S2W | 1912 |
| Scally | Winifred | Swamp Farm, Toodyay | S2W | 1924 |
| Scammell | W. P. | Wyaneatage Farm, Boyup Brook | Q6A | 1924 |
| Scampoli | S. | Plantagenet 1357, 1352, Tambellup | S4S and 117B, 112A | 1962 |
| Scanlan | Robt. | Shannon View, E. Kumminin | S8V | 1924 |
| Scanlon | Harriett Marie | Avon Locs. 14313, 14312, Lake Brown via Nungarin | IS4 | 1926 |
| Scanlon | James John | Lake Brown | 8UU | 1924 |
| Scanlon | T. B. | Quailerup, Wagin | 6TS and 44C, 20E | 1962 |
