| Downs | Arthur | Wilderswood Farm, Tutunup | DD4 | 1927 |
| Downs | Chas. W. | Yandanooka | 7ZU | 1924 |
| Downs | E. M. | Range View, Serpentine | ED8 | 1912 |
| Downs | Harold E. | Chandos Farm, Warraling Siding, via York | 7DD | 1924 |
| Downs | Harry G. | Southward Farm, Circle Valley, via Norseman | 3QX | 1925 |
| Downs | P. L. | A 474a, Karridale | P2D and 55F, 40B | 1962 |
| Downs | W. R. | Balcatta | UD1 | 1924 |
| Downsborough | A. E. & W. L. | Indiana, Burracoppin | 4AD and 80E, 50D | 1962 |
| Downsborough | F. | 14064, 13994, 21660, Burracoppin | FD7 and 10D, 49E | 1962 |
| Downsborough | J. L. | Marydale, Burracoppin | 8QD and 14E, 34B | 1962 |
| Downsborough | J. W. | Marydale, Burracoppin | 8QD | 1924 |
| Downward | T. G. | Condon | X0P | 1924 |
| Dowrick | H. R. | Palomar, Mullalyup | V1D and 35A, 32C | 1962 |
| Dowrick | John A. | Jersey Vale, Mullalyup | D9A | 1924 |
| Dowse | John | Loc. 20, Cockburn Sound, Spearwood | V1D | 1924 |
| Dowsett | B. J. | Springfield, Wms. Loc. 4287, Narrogin | D6T and 42B, 107E | 1962 |
| Dowsett | G. H. & V. S. | Norrine, Wandering | WD9 and 51F, 22D | 1962 |
| Dowsett | Geo. | Corraning, via Pingelly | D2G | 1912 |
| Dowsett | Geo. | Corraning, via Pingelly | D2G | 1924 |
| Dowsett | John | Wandering, Pingelly | J2Y | 1912 |
| Dowsett | John | Wandering, via Pingelly | J2Y | 1924 |
| Dowsett | John & George | Wandering and Corranning, Wandering | 2JG | 1912 |
| Dowsett | John & George | Wandering and Corraning, Wandering | 2JG | 1924 |
| Dowsett | M. | Corner Farm, Wandering | J2Y and 5D, 13E | 1962 |
| Dowsett | M. & W. G. P. | Hillcrest, Gledhow, via Albany | DW0 and 50E, 80D | 1962 |
| Dowsett | S. E. & Y. A. | Lock Erin, Wandering | SD0 and 7B, 12E | 1962 |
| Dowsett | Saml. | The Paddocks, Wandering Brook | SD0 | 1912 |
| Dowsett | Theresa A. | Lock Erin, Wandering | SD0 | 1924 |
| Dowsett | Wm. | Norrine, via Wandering | WD9 | 1912 |
| Dowsett | Wm. | Norrine, via Wandering | WD9 | 1924 |
| Dowson | A. G. | Brookdale, Toodyay | D3A | 1912 |
| Dowson | A. G. | Brookdale, Toodyay | D3A | 1924 |
| Dowson | A. M. & M. | 30 and 32, Brunswick Junction | LK1 and 14C, 109E | 1962 |
| Doxey | H. | Yarloop, Yarloop | HD3 | 1912 |
| Doxey | H. | Yarloop | HD3 | 1924 |
| Doy | S. S. | Yilgarn 1218, Kellerberrin | AE2 and 1C, 48A | 1962 |
| Doy & Co. | - | Lake Farm, Kellerberrin | DY0 and 13C, 41E | 1962 |
| Doye | A. P. P. | Mentone, Nel. 5296, Greenbushes | P4D and 71A, 6B | 1962 |
| Doyle | A. E. | Melrose Farm, Tammin | E4D | 1924 |
| Doyle | C. M. (Mrs) | Bunnyfield, Stretton | C4D and 47B, 55F | 1962 |
| Doyle | Ethel | Longfield, Ruabon, via Busselton | Z9X | 1925 |
| Doyle | Henry | Collie Run, Collie | 0DY | 1924 |
| Doyle | Henry Jas. | Zamia, Mt. Kokeby | 0KD | 1924 |
| Doyle | J. | Lots 43, 152, Mundijong | YM6 | 1962 |
| Doyle | J. A. | 152, Mundijong | J2A and 29B, 3E | 1962 |
| Doyle | J. G. | Mt. Magnet | OD7 | 1912 |
| Doyle | J. G. | Mt. Magnet | OD7 | 1924 |
| Doyle | J. H. | Mountain View, South Tammin | VD8 | 1924 |
| Doyle | J. H. & W. T. | Blocks 58 and 10339, Tammin | D4Y | 1924 |
| Doyle | J.H. & W. T. | Blocks 58 & 10339 | D4Y | 1912 |
