| Yates | M. S. | Clifton Vale, Mukinbudin | MY1 and 15B, 118E | 1962 |
| Yates | Oliver C. | Roslyn, Kojonup | Z03 | 1924 |
| Yates | R. & T. | Avon Locs. 22635/7, 15111, 14810-1, Welbungin | RY1 and 32B, 22A | 1962 |
| Yates | R. B. | Wellington Loc. 1564, Capel | 7QY | 1962 |
| Yates | Reginald Bleby | Wellington Loc. 1564, Capel | 7QY | 1925 |
| Yates | S. J. | Wellington Loc. 1743, 2153, 2077, Capel | J3Y and 46D, 3E | 1962 |
| Yates | S. M. | Donuguel, Mukinbudin | S1Y and 112D, 58F | 1962 |
| Yates | W. T. | Alice Downes, Hall's Creek | T2Y | 1912 |
| Yates | W. T. | Ancona Farm, Muradup via Kojonup | WY7 | 1912 |
| Yates | W. T. | Alice Downs, Hall's Creek | T2Y | 1924 |
| Yates | W. T. | Aneona Farm, Muradup | WY7 | 1924 |
| Yates & Co. | C. W. | Roslyn, Kojonup | ZO3 and 24B, 22E | 1962 |
| Yathroo | Hy. | Nylagardy Station, Dandaragan | 4UU | 1924 |
| Yeardye | Albert Charles | Ivanhoe Farm, Perenjori | A8Y | 1926 |
| Yeatman | S. E. | Helenville, Serpentine | SY4 and 8B, 27A | 1962 |
| Yeats | Jabez Gad | Grosvenor, Kellerberrin | JY7 | 1912 |
| Yeats | Jabez Gad. | Grosvernor, Kellerberrin | JY7 | 1924 |
| Yeats & Sons | T. A. | Williams Loc. 11502, Kukerin | TY9 and 43B, 20A | 1962 |
| Yeeda Station Ltd. | - | Yeeda Station, via Derby | YU0 and 11D, 18E | 1962 |
| Yeedo Pastoral Co. Ltd. | - | Yeeda Station, Via Derby | YU0 | 1924 |
| Yeelirrie Station Co. | - | Yeelirrie Station and Altona Station, Leonora | 1FZ and 12C, 5A | 1962 |
| Yejaro | Yamasaki | Broome | YY1 | 1912 |
| Yejaro | Yamasaki | Broome | YY1 | 1924 |
| Yeldon | H. V. | 6011, Katanning | H4Y and 37B, 8E | 1962 |
| Yelland | Herbert John | Blocks 16209, 15923, 15916, Bruce Rock | G7Y | 1924 |
| Yelland | Mrs Rose | Locations 15924, 15909, Bruce Rock | 7YG | 1924 |
| Yelland & Sons | H. C. | Tasland, Calingiri | G7Y and 41B, 17A | 1962 |
| Yellwarri Downs Grazing Co. | - | Yellwarri Downs, Broomehill | CT6 and 18D, 15E | 1962 |
| Yelverton | D. A. | Quindalup-Biljedup, Yelverton | 6YQ and 37B, 34E | 1962 |
| Yelverton | Douglas A. | Quindalup, Quindalup, via Busselton | 6YQ | 1925 |
| Yelverton | H. G. | Quindalup House, Quindalup | H1Y | 1912 |
| Yelverton | H. G. | Quindalup House, Quindalup | H1Y | 1924 |
| Yelverton | H. M. | Sussex Loc. 109, 275, 222, Busselton | H1Y and 17D, 10E | 1962 |
| Yelverton | W. C. R. | Capalcare, Moora | YY2 | 1912 |
| Yelverton | W. C. R. | Capaleare, Moora | YY2 | 1924 |
| Yencken | C. C. | Rosedale, Kojonup | CY2 and 55F, 13B | 1962 |
| Yeo | C. | Glenroy, Brookton | Y0E and 37D, 10E | 1962 |
| Yeo | C. F. & W. L. | Koorrnong, Brookton | YE0 and 30B, 23A | 1962 |
| Yeo | Charles | Glenroy, Brookton | Y0E | 1928 |
| Yeo | J. S. | Mayfield Downs, Cunderdin | AW5 and 52F, 29B | 1962 |
| Yeo | T. & J. | 7750-1, Brookton | TJ4 and 120D, 46E | 1962 |
| Yeoman | Christopher | Avon location 18630, South Kumminin | YO3 | 1924 |
| Yeomans & Son | E. | 18345, 18336, 18338, Narembeen | 9BY and 4D, 33E | 1962 |
| Yeomans Lodge Grazing Co. | - | Park Hills, Boyup Brook | 6GH and 37C, 20A | 1962 |
| Yerilla Pastoral Co. | - | Yerilla Station, Via Kookynie | KY0 | 1924 |
| Yerilla Station | - | Yerella Station, Yerella | OK0 | 1925 |
| Yerilla Station Pty. Ltd. | - | Yerilla Station, Kookynie | 0KO and 4C, 11A | 1962 |
| Yeronga Pty. Ltd. | - | Yeronga, Moora | YP0 and 37D, 40E | 1962 |
| Yewers | Harry Leslie | Mansfield, Merkanooka | LY5 | 1924 |
| Ygoola | - | Ygoola, Kalannie | RH8 and 11C, 56F | 1962 |
