| Durham | George | Fairholme, Dangin | G3D | 1912 |
| Durlacher | Jno. | Auburn, York | SD7 | 1912 |
| Durlacher | Jno. | Auburn, York | SD7 | 1924 |
| Durrant & Pacch | - | Eulareenyha, via Quairading | DP2 | 1924 |
| Durrant & Paech | - | Eulareenyha via Quairading | DP2 | 1912 |
| Durston | M. M. | Avon Loc. 15463, Corrigin | ND4 | 1924 |
| Durston | M. M. | Lauringa, Corrigin | ND4 and 36A, 6B | 1962 |
| Durtanovich | J. P. | Nelson Loc. 3633/ Nelson Loc. 865, Bridgetown | 2DV | 1962 |
| Duschka | Sarah Ann | Lot 54, Osborne Park | DU6 | 1924 |
| Dusinberg | A. A. | Bibra Lake, South Fremantle | A2D | 1912 |
| Dusinberg | A. A. | Bibra Lake, South Fremantle | A2D | 1924 |
| Dusting | L. R. | Fair View, Gnowangerup | LD8 and 4C, 35E | 1962 |
| Duthie | Alexander | Drumtochy, Waroona | 8DA | 1924 |
| Duthie | C. C. | Hillside, Perenjori | US1 and 25A, 44C | 1962 |
| Duthie | D. G. | A. 1129, Denbarker, via Mt Barker | 5DD and 50C, 27A | 1962 |
| Duthie | Wm. John | Clifton Vale Farm, Mukinbudin | Y9D | 1924 |
| Duthie & Tait | A. R. & G. W. | Vic. Loc. 8282 & 7418, Bowgada | FD5 and 43D, 3E | 1962 |
| Dutton | C. | Kunjin Farm, Wonggong, via Armadale | 9DU | 1924 |
| Dutton | G. A. | 802, 804, Esperance | GD8 and 105A, 107B | 1962 |
| Dutton | Samuel E. | Nolba, via Geraldton | 5UE | 1924 |
| Dutton | W. J. | Loc. 801-805, Esperance | W7D and 16C, 105E | 1962 |
| Dutton | Wm. L. | Homeleigh Farm, Bruce Rock | X8D | 1924 |
| Duttson | D. W. G. | Kilburnie, Katanning | F9D and 25B, 38A | 1962 |
| Duttson | Ralph Cecil | Kibburine, Broome Hill | F9D | 1924 |
| Duty | D. | Blocks 23 and 83, Tammin | 0DD | 1912 |
| Duty | D. | Blocks 23 & 83, Tammin | 0DD | 1924 |
| Duxbury | K. A. | Darylyn, Yornup | B9E and 113E, 110D | 1962 |
| Dvorctsky | S. | Dairy, Armadale | 1SD | 1924 |
| Dvorctsky & Greig | - | Qualin, Brookton | 2DG | 1924 |
| Dvoretsky | S. | Dairy, Armadale | 1SD | 1912 |
| Dvoretsky & Greig | - | Qualin, Brookton | 2DG | 1912 |
| Dwyer | G. L. | Algra Down, Loc. 1576, Esperance | GD6 and 58F, 9B | 1962 |
| Dwyer | J. | 17 Carnarvon St. Victoria Park | 2XZ | 1962 |
| Dwyer | J. L. | Mintarra, Esperance | DY9 and 28B, 6E | 1962 |
| Dwyer | J. Stewart | Bonnie Doone, Jubuh via Brookton | 2DY | 1928 |
| Dwyer | James | Wilson & Johns Paddock, Cannington | 2XZ | 1924 |
| Dwyer | John | Duketon, via Laverton | D5Y | 1924 |
| Dwyer | Mat. | Korilya Farm, North Dandalup | 5DY | 1924 |
| Dwyer | Michael Jos. | Mintara Farm, Morawa | DY9 | 1924 |
| Dwyer | William | Burtville, Burtville | DW9 | 1924 |
| Dwyer & Morrissey | - | Ingamarie Station, via Peak Rock | 7DT | 1924 |
| Dwyer Bros. | - | Ullaring Locs. 2900-1, Part 3995, 4021, 2726, Southern Brook | D5Y and 4D, 36E | 1962 |
| Dyer | A. O. | Minkadine, Kellerberrin | KX3 | 1924 |
| Dyer | A. O. & E. T. | Minkadine, Kellerberrin | KX3 and 29D, 18E | 1962 |
| Dyer | Benjamin C. | Dudawa, via Arrino | B7G | 1927 |
| Dyer | C. E. | Loc. 10706, Doodlakine | 9DY | 1912 |
| Dyer | C. E. | Loc. 10706, Doodlakine | 9DY | 1924 |
| Dyer | Chas. | Holmbush, Kellerberrin | 9DS | 1912 |
| Dyer | Chas. | Homebush, Kellerberrin | 9DS | 1924 |
| Dyer | J. | Loc. 1500, Waroona | 5DJ and 34C, 31A | 1962 |
