| Cock | W. N. | Sandstone | K0C | 1924 |
| Cock & Sons | W. N. | Kaluwiri Station, sandstone | K0C and 5D, 35E | 1962 |
| Cockburn | C. J. & T. | Trayning | QC5 | 1924 |
| Cockburn | James | Moonta Run Box 31, Boulder | C6N | 1924 |
| Cockburn | Jas. | Moontu Run, Box 31, Boulder | C6N | 1912 |
| Cockburn | N. R. | 8th Stree, Harvey | 8Nc | 1962 |
| Cockburn Road Board | - | Cockburn Road District Pound, Hamilton Hill | C0R | 1962 |
| Cockell | James | The Ranch, Picton Junction | JC1 | 1924 |
| Cockell | Jas. | The Ranch, Picton Junction | JC1 | 1912 |
| Cockerill | J. H. | Sedgefield, Caves Road, Vasse | YK9 | 1962 |
| Cockerill | John Hy. | Sedgefield, Caves Road | YK9 | 1924 |
| Cockerton | W. | 18707-9-3, 18700, Karlgarin, via Kondinin | W4C and 40D, 46E | 1962 |
| Cocking | H. E. | Sylvania, Wannamal | 7KC and 5A, 41B | 1962 |
| Cocking | Harold | Palaris, Southern Cross | HC5 | 1912 |
| Cocking | Harold | Palaris, Southern Cross | HC5 | 1924 |
| Cocking | Joseph | Carter, Linden | CK8 | 1912 |
| Cocking | Joseph | Linden | CK8 | 1924 |
| Cocking | Samuel | Lyndon River, Winning Pool | 5XC | 1924 |
| Cocking | Thomas C. | Belele Station, Meekatharar | TG1 | 1928 |
| Cocking | Wm. R. | Sylvania, Wannamal | 7KC | 1924 |
| Cockman | George | 13-Mile Post, Wanneroo | O5G | 1924 |
| Cockman | H. J. | Wady Wady, Dandarraga | C4K | 1912 |
| Cockman | H. J. | Wady Wady, Dandarraga | C4K | 1924 |
| Cockman | H. W. | Swan Loc. 1811, Wanneroo | K9C | 1924 |
| Cockman | J. W. | Lockleigh, Wanneroo | C4S and 44C, 120A | 1962 |
| Cockman | R. G. | Loc. of Kalburn, Moora | O8K | 1962 |
| Cockman | R. S. | H. F., Wanneroo | 5RC | 1912 |
| Cockman | R. S. | H/F, Wanneroo | 5RC | 1924 |
| Cockman | Ruby Grace | Loc. of Kalburn, Moora | O8K | 1924 |
| Cockman | Saml. | Wanneroo, Wanneroo | 0SC | 1912 |
| Cockman | Samuel | Wanneroo | 0SC | 1924 |
| Cockman & Shaw | F. M. & C. A. | Locksley, Wanneroo | C4S | 1912 |
| Cockman & Shaw | F. N. & C. A. | Locksley, Wanneroo | C4S | 1924 |
| Cockram | A. J. | Devon Farm, Nukarni | JT3 and 49D, 4E | 1962 |
| Cockram | A. M. (Mrs) | Devon Farm, Nukarni | OK7 | 1962 |
| Cockram | A. Richard | Mundijong, Mundijong | AC3 | 1912 |
| Cockram | A. Richard | Mundijong | AC3 | 1924 |
| Cockram | E. R. | Orange Dale, Gingin | C2E | 1912 |
| Cockram | E. R. | Orange Dale, Gingin | C2E | 1924 |
| Cockram | Edw. | Mundijong, Murray District | 3EC | 1912 |
| Cockram | Edw. | Mundijong | 5EC | 1924 |
| Cockram | F. E. (jnr') | Murrayvale, Yorkrakine, via Tammin | FC6 and 108A, 28C | 1962 |
| Cockram | Francis E. | Buckingham Farm, Yorkrakine | E1Y | 1924 |
| Cockram | G. W. | Homestead, Mardella | 0J K | 1912 |
| Cockram | G. W. | Homestead, Mardella | 0JK | 1924 |
| Cockram | H. A. J. | Sandhill, Yorkrakine | 7IC and 18A, 47B | 1962 |
| Cockram | H. J. & W. E. | Greenfield farm, Cannington | H6C | 1912 |
| Cockram | H. J. & W. E. | Greenfield Farm, Cannington | H6C | 1924 |
| Cockram | R. E. | Cannington | E0U | 1924 |
| Cockram | V. | Stock Bazaar, Pier Street, Perth | VC9 | 1924 |
