| Carty | J. V. & F. | Sussex Locs. 2211, 2223, Cowaramup | 6CJ | 1962 |
| Carty | Patience | Hotel Farm, Mt. Barker | PD2 | 1912 |
| Carty | Patience | Hotel Farm, Mt. Barker | PD2 | 1924 |
| Carwardine | J. H. | 10597-10598, Kukerin | C3J and 21B, 14A | 1962 |
| Carwardine | John B. | Grassdale Farm, Moulyinning | 2YC | 1924 |
| Cases | Esteban R. | Homestead, Busselton | 8EA | 1924 |
| Cases | Esteben R. | Homestead, Busselton | 8EA | 1912 |
| Casey | Catherine Elizabeth | Crystal Hill Farm, Meckering | G8G | 1926 |
| Casey | D. D. | Ardpatrick, Nungarin | DD8 | 1924 |
| Casey | D. J. S | 13665, 21362, 13663, 17981, 22372 and Lot 235, Pt. Loc. 1317, Gidgiegannup | KC2 and 30D, 6E | 1962 |
| Casey | F. J. | Cliffden, Mandurah | 5KC and 3C, 119E | 1962 |
| Casey | Fredk. Geo. | Culworth Farm, Circle Valley | 9KU | 1924 |
| Casey | G. L. T | Crystal Hill, Meckering | CY5 and 42B, 37E | 1962 |
| Casey | J. J. | Concordia, Greenhills | ZC7 | 1912 |
| Casey | J. J. | Concordia, Greenhills | ZC7 | 1924 |
| Casey | James | Chrystal Farm, Meckering | 6YC | 1924 |
| Casey | Jas. | Killarney, Manjimup | 9KJ | 1924 |
| Casey | N. W. | Manela, Miling | NC0 and 24A, 8B | 1962 |
| Casey | T. G. | Lilyvale, Dowerin | 5TY | 1924 |
| Casey | Thos. | Katanning | 9TC | 1912 |
| Casey | Thos. | Katanning | 9TC | 1924 |
| Cashmore | G. D. & J. | Nyonger, Hyden | 1GC and 46B, 17A | 1962 |
| Cashmore | R. W. | Locs. 23, 24, 28, Meenar | RU9 | 1924 |
| Cashmore | R. W. | Avon Park, Wyalcatchem | P0M and 43A, 23B | 1962 |
| Caskie | John | Rocky Valley, Barton | J6V | 1912 |
| Casley | G. W. | Capledene, Westonia | 6GU and 102A, 47B | 1962 |
| Casley | M. R. | Yilarn 780, 782, Westonia | M1C and 4B, 71E | 1962 |
| Casley | R. J. | Block 6007, 6008, Mullewa | RJ1 and 115A, 17B | 1962 |
| Casotti | G. | Canning Loc. 380, karagullen | GC0 and 49D, 111E | 1962 |
| Cass | Herbert | Nairibin, Dumbleyung | KK8 | 1924 |
| Cass & Co. | H. | Sunray, Dumbleyung | KK8 and 12B, 44E | 1962 |
| Casselton | C. W. | Group 34, Wonnerup | Y4C | 1924 |
| Casselton | P. J. | Bexley, Busselton | Y4C | 1962 |
| Casselton | R. J. | Glenview, Manjimup | 8VC | 1962 |
| Casselton | W. H. | Holmwood, Busselton | Y1B and 37C, 33E | 1962 |
| Cassey | A. | Mountain View Dairy, Mt. Magnet | 0CU and 14B, 14E | 1962 |
| Cassidy | A. | Clifton Farm, Kodj-Kodjen | C3O | 1912 |
| Cassidy | A. | Clifton Farm, Kodj Kodjin | C3O | 1924 |
| Cassidy | G. Geo. | Davyhurst, Davyhurst | HC3 | 1924 |
| Cassidy | H. Geo. | Davyhurst, Davyhurst | HC3 | 1912 |
| Cassidy | T. H. | Blocks 576 and 152, Collie | T4C | 1912 |
| Cassidy | T. H. | Blocks 576 and 152, Collie | T4C | 1924 |
| Cassidy | Walter Jas. | Collie Run, Collie | X7C | 1924 |
| Castelside Pastoral Co. | - | Castelside, Carnamah | C3F and 46D, 43E | 1962 |
| Caster | J. De. V. | Yoralling, Cunderdin | C0S | 1912 |
| Castiean | J. E. | Seven Hills, Lake Preston, Symond's Springs, Roelands | 1YY | 1924 |
| Castiean | W. B. | Malvern, Roelands | W7C | 1924 |
| Castieau | J. E. | Seven Hills, Lake Preston, Symond's Spring, Roelands | 1YY | 1912 |
| Castieau | W. B. | Malvern, Roelands | W7C | 1912 |
| Castier | J. de V. | Yoralling, Cunderdin | C0S | 1924 |
