| Dease | E. F. | Wandilla, 1170, Maida Vale | E7D and 5B, 28E | 1962 |
| Dease | J. D. | 2754, 2753, 3010, Wialki | J1D and 102B, 18A | 1962 |
| Dease Studios Ltd. | D. B. | Glendew, Chittering | 2NX and 19C, 3E | 1962 |
| Deason | J. H. | Cunyulgup, Yallingup | X6D | 1924 |
| DeBurgh | Sidney | Cowalla, Moore River, Gingin | BR1 | 1912 |
| Dec | Arthur Edwin | Amberley, Witchclife | A2D | 1928 |
| Deconti | G. B. | Nelson 11026 - 8380, Greenbushes | 6GD | 1962 |
| Dedman | G. J. | Lots 1, 2, and 3, Victoria Avenue, Nth. Fremantle | G4D | 1912 |
| Dedman | G. J. | Lots 1, 2, and 3, Victoria Aveenue, North Fremantle | G4D | 1924 |
| Dee | A. E. | Amberley & Coast, Witchcliffe | A2D | 1962 |
| Dee | Dora May | Coorow | D4D | 1926 |
| Dee | Ellen | Upper Irwin, Mingenew | ED0 | 1912 |
| Dee | Ellen | Upper Irwin, Mingenew | ED0 | 1924 |
| Dee Gan | J. U. | Copamine, Jerrammugup | JD7 and 110A, 23B | 1962 |
| Deeke & Deeke | - | Mistletoe, Manjimup | 6DE and 32A, 12B | 1962 |
| Deele | W. T. | Hortonia, Pinjarra | TD7 | 1924 |
| Deelie | W. T. | Hortonia, Pinjarra | TD7 | 1912 |
| Deen | Jamall | Borglan Hill, Tammin | 1DE | 1912 |
| Deen | Jamall | Borglan Hill, Tammin | 1DE | 1924 |
| Deepdale Estate | - | Deepdale Estate, Toodyay | LL1 and 40A, 45C | 1962 |
| Deer | Chas. F. | Augusta, via Karridale | CD3 | 1912 |
| Deer | Chas. F. | Augusta, Karridale | CD3 | 1924 |
| Deer | W. J. | Augusta, Karridale | 3WD | 1912 |
| Deer | W. J. | Augusta, Karridale | 3WD | 1924 |
| Deering | Charles Gaston | Wattle Valley, Scarborough | G1D | 1926 |
| Deering | E. H. & R. D. | Lot 196, Burraghup, via Mandurah | 7MR and 28B, 116A | 1962 |
| Dees | Wilfred Frances | Lytchett, Noombling, via Pingelly | 4DZ | 1924 |
| Deeside Muirs | - | Deeside, Manjimup | M3M and 13C, 14A | 1962 |
| Degens | M. | Plant. Loc. 718, W. Narrikup | MD3 and 23B, 71E | 1962 |
| DeGrey River Pastoral Co. Ltd. | - | Balfour Downs, via Nullagine | M5R | 1924 |
| DeGrey River Pastoral Co. Ltd. | - | Mulyne Station, Port Hedland | UP2 | 1924 |
| DeGruchy | W. V. | Clifton Hill, Lake Yealering | 3DG | 1924 |
| Delacca | Maurice | Pincko Locke Farm, Esperance | DE6 | 1924 |
| Delahaunty | P. J. | Norwood, Northam | 0PD and 37C, 33A | 1962 |
| Delamare | Thos. | Dairy, Subiaco | 1TD | 1924 |
| Delane | G. V. | Pine Park, Bunjil | V7D and 51F, 46D | 1962 |
| Delane | Gerald Victor | Dunromyn, North Burracoppin | V7D | 1926 |
| Delane | W. P. & M. A. | Glencoe, Caron | WD2 and 48B. 13A | 1962 |
| Delaney | F. B. | Commonage, Katanning | F4B | 1912 |
| Delaney | F. B. | Commonage, Kattanning | F4D | 1924 |
| Delaney | John | Sunnydale Fram, Kojonup | 4DJ | 1912 |
| Delaney | John | Sunnydale Farm, Kojonup | 4DJ | 1924 |
| Delaney | Wm. | Fernbrook Farm, Warren, via Manjimup | Y0V | 1924 |
| Delaporte | A. G. | Banksia Gulley & The Pines, Kirup | 7DE and 13C, 32A | 1962 |
| Delaporte | Bedford | Hill View, Brunswick | 1MD | 1912 |
| Delaporte | Bedford | Hill View, Brunswick | 1MD | 1924 |
| Delaporte | C. S. | Locs. 1645, Forest Grove, Elgin | 0FT | 1962 |
| Delaporte | E. J. | Boyanup AA Loc. 87, Capel | 5ED | 1962 |
| Delaporte | Emily A. | Capel, Capel | EE5 | 1912 |
| Delaporte | Emily A. | Capel | EE5 | 1924 |
