| Clothier | E. | Roseneath 2801, Mt. Barker | 0ED | 1962 |
| Clothier | F. L. | Loc. Nos. 599-600, 251, 252, Mt. Barker | L3C and 105A, 4B | 1962 |
| Clothier | J. E. | Lootagin, Nangeenan | JC2 | 1912 |
| Clothier | J. E. | Lootagin, Nangeenan | JC2 | 1924 |
| Clothier | J. J. | The Yates & Rockcliff, Mt. Barker | GY3 and 52F, 3B | 1962 |
| Clothier | Joseph T. | Wokurna, Mt. Barker | J6G | 1928 |
| Clothier | R. E. | Roseneath, Mt. Barker | V9Q and 108D, 15E | 1962 |
| Clothier | Roy Edward | Roseneath, Mt. Barker | V9Q | 1925 |
| Clothier | W. W. | Jilbadjin Loc. 15, Walgoolan | YX6 | 1924 |
| Clothier | W. W. | Jilbadjin Loc. 15/14/12, Walgoolan | YX6 and 16D, 105E | 1962 |
| Clough | E. | 20301, 14264, Bencubbin | E3C and 17B, 120E | 1962 |
| Clough | G. | Tredethlyn, Bridgetown | 4CT and 43A, 18B | 1962 |
| Clough | J. & R. J. | 20298, 24168, Bencubbin | 8JY and 7D, 41E | 1962 |
| Clough | J. E. | Loc. 20298, Trayning | 8JY | 1924 |
| Clover | Wm. James | Loc. 6197, Manjimup | UV2 | 1924 |
| Clover Downs Pastoral Co. | - | M 2060, Mogumber | C1D and 19E, 34D | 1962 |
| Cloverbrook Farm | - | Clover Brook, Dwarda, via Pingelly | C7C and 42B, 67A | 1962 |
| Cloverdale Ltd. | - | Camballan, Boyup Brook | C1L and 107E, 102D | 1962 |
| Clow | David Henry | Slaughter Yard Paddock, Northampton | CZ8 | 1924 |
| Clow | William | Peel Estate Lot 80, 13-Mile, Peel Estate, Jandakot | QV5 | 1925 |
| Clues | A. G. E. | Shanaway Farm, Gingin | AZ9 | 1924 |
| Cluett & Sons | - | Greenridge & Stirling View, Porongorup, Mt. Barker | 5SV and 10B, 103E | 1962 |
| Clugsten | E. J. | Avonlea Farm, Bokal | D8V | 1925 |
| Clugston | ED. James | Cherry Tree Pool, Katanning | CZ6 | 1924 |
| Clune | A. J. | Claremount, Bindoon | TJ3 and 55F, 18D | 1962 |
| Clune | B. P. & M. | Mt. Masima, Geraldton | U3X and 39D, 5E | 1962 |
| Clune | G. A. | Canteerbury, New Norcia | 0XC and 118A, 21C | 1962 |
| Clune | I. L. | Coolup AA184, 163, Murray 451, Pinjarra | 1CA and 24B, 13E | 1962 |
| Clune | J. & M. | M770-777, M729, M 734, Ptn 1670, Three springs | J4C and 10C, 42E | 1962 |
| Clune | J. M. | Caterbury, New Norcia | CX0 | 1912 |
| Clune | J. M. | Canterbury, New Norcia | CX0 | 1924 |
| Clune | J. P. | Clunard, Mogumber | JC5 | 1912 |
| Clune | J. P. | Clunard, Mogumber | JC5 | 1924 |
| Clune | Jeremiah James | Waorie, Mogumber | JJ1 | 1926 |
| Clune | M. | Foxhall, Dardanup | M5C | 1912 |
| Clune | M. | Vic. Loc.6921, Carnamah | 4YF | 1924 |
| Clune | M. | Foxhall, Dardanup | M5C | 1924 |
| Clune | M. G. | Wongvale, Wongan Hills | CU8 and 46C, 7E | 1962 |
| Clune | Mary A. | Barly Peak, Gillingarra | R4J | 1912 |
| Clune | Mary A. | Barly Peak, Gillingara | R4J | 1924 |
| Clune | Mrs Rose | Paradise Lot 29, Dardanup | 1QK | 1924 |
| Clune | Robert A. | Forrest Park, Gillingara | Y7K | 1924 |
| Clune | Thos. J. | Claremont, Bindoon | TJ3 | 1912 |
| Clune | Thos. J. | Claremont, Bindoon | TJ3 | 1924 |
| Clune | Thos. Math. | Clunesdale, Wannamal | 0TC | 1924 |
| Clune | Thos. Matthew | Clunesdale, Wannamal | 0TC | 1912 |
| Clune & Maslen | - | White Well Station, Wubin | NY1 | 1924 |
| Clune & Sons | M. J. | Lake View, Pt. Swan 1317, Lot 251, Carnamah, Gidgegannup | M5C and 22D, 3E | 1962 |
| Clune & Sons | V. T. | Woodbine, E. Chapman | CX0 and 21C, 115A | 1962 |
| Clune Bros. | - | Warnook Farm, Gnowangerup | J5Q | 1924 |
