| Clarke | W. H. | Clayfield, Watheroo | 7CW | 1912 |
| Clarke | W. H. | Clayfield, Watheroo | 7CW | 1924 |
| Clarke | W. J. | Youanme, Youanme | 4CW | 1912 |
| Clarke | W. J. | Roolkarnin, Wongan Hills | 6CE | 1912 |
| Clarke | W. J. | Youanme | 4CW | 1924 |
| Clarke | W. J. | Roolkin, Wongan Hills | 6CE | 1924 |
| Clarke | W. J. | Hillside, Benger | WK1 and 41B, 41E | 1962 |
| Clarke | Willis E. | Glatton Farm, Gnowangerup | EG7 | 1927 |
| Clarke | Wm. | Cooning Cooning, Jurokine, via Northam | WC3 | 1912 |
| Clarke | Wm. | Homestead, Moora | WC5 | 1912 |
| Clarke | Wm. | Cooning Cooning, Jurokine, via Northam | WC3 | 1924 |
| Clarke | Wm. | Homestead, Moora | WC5 | 1924 |
| Clarke | Wm. E. | Vic. Loc. 4014, Latham | 3PL | 1924 |
| Clarke | Wm. Herbert | Harvey | CN3 | 1924 |
| Clarke & Co. | Meehan | Broad Meadows, Sandstone | C9M | 1912 |
| Clarke & Co. | R. & M. | Naramella, Goomalling | CR1 and 31D, 44E | 1962 |
| Clarke & Co. | W. J. | Cavan, Marchagee, via Coorow | W0C and 44C, 34A | 1962 |
| Clarke & Hamilton | Thos. & John | Frazier Downs, Broome | 1VE | 1924 |
| Clarke & Hayes | - | Moologool Station, Meekatharra | 1RU | 1924 |
| Clarke & Smith | - | Towrana, Carnarvon | DC9 | 1912 |
| Clarke & Smith | - | Towarana, Carnarvon | DC9 | 1924 |
| Clarke & Sons | H. | Aston Villa, Yallingup | 3HC | 1912 |
| Clarke & Sons. | H. | Aston Villa, Yallingup | 3HC | 1924 |
| Clarke, Meehan &Co. | - | Broadmeadows, Sandstone | C9M | 1924 |
| Clarken | Johanna | North Dumpling Farm, Burke's Siding | ZC8 | 1924 |
| Clarkeson & Endersbee | - | Blocks 11437, 11438, Tatadjin | C8E | 1912 |
| Clarkeson & Endersbee | - | Blocks 14437, 14438, Totadgin | C8E | 1924 |
| Clarkson | Bernard L. | Fogathorpe, Newcastle | LC4 | 1912 |
| Clarkson | Bernard L. | Fogathorpe, Toodyay | LC4 | 1924 |
| Clarkson | D. B. | Cobbler Pool, Toodyay | DC1 | 1924 |
| Clarkson | D. D. | Cobbler Peel, Newcastle | DC1 | 1912 |
| Clarkson | E. W. | Tyford, Arrowsmith and Upper Irwin, Dongarra | CL9 | 1912 |
| Clarkson | E. W. | Tyford, Arrowsmith, and Upper Irwin, Dongarra | CL9 | 1924 |
| Clarkson | Est. of the late H. W. | Meka, Noondie, Roderick, Wanmorro Coastal, Yalgoo | HW0 and 80B, 80E | 1962 |
| Clarkson | H. & D. | Connor's Estate, Newcastle | C2B | 1912 |
| Clarkson | H. & D. | Connor's Estate, Toodyay | C2B | 1924 |
| Clarkson | H. W. | The Range, Newcastle | HW0 | 1912 |
| Clarkson | H. W. | The Range, Toodyay | HW0 | 1924 |
| Clarkson | J. W. & D. E. | Tyford, Dongara | V1E and 7B, 20E | 1962 |
| Clarkson | M. G. | Commonage, Nannine | Y5N | 1924 |
| Clarkson | M. G. | Colin Vale, Dandaragan | Y5N and 21C, 26E | 1962 |
| Clarkson | R. T. & C. W. | Springfield, Dongarra | 4CL and 17B, 41A | 1962 |
| Clarkson | Samuel | Waterhall, Guildford | 1SG | 1928 |
| Clarkson & Lukin | - | Meka Station, via Yalgoo | PB9 | 1924 |
| Clarkson & Marshall | - | Archdale, Cue | U8C | 1912 |
| Clarkson & Marshall | - | Archdale, Cue | U8C | 1924 |
| Clarkson & McSwain | A. & N. | Mt. Farmer and Lake Austin, Cue | C4M | 1912 |
| Clarkson & Son | R. R. | Lakeside Station, Cue | C4M and 32C, 29E | 1962 |
| Clarkson Bros. | - | Webb's Patch Station, Cue | UC1 | 1912 |
| Clarkson Bros. | - | Webb's Patch Station Cue | UC1 | 1924 |
