| Dempster | W. E. & K. M. R. | Wye Farm, Dongara | WY1 and 13D, 23E | 1962 |
| Dempster | W. P. | Coonine, Woodlands, Noongagin, Northam | W1D | 1912 |
| Dempster | W. P. | Coonine, Woodlands, Noonagin, Northam | W1D | 1924 |
| Dempster & Dempster | - | Esperance Bay, Fraser Range, Esperance | DD2 | 1912 |
| Dempster & Dempster | - | Esperance Bay, Fraser Range, Esperance | DD2 | 1924 |
| Dempster & Sons | A. & E. | Widmere, Manjimup | W1D and 6C, 26C | 1962 |
| Dempster & Sons | G. M. | Sheron, Bengar | GD5 and 32B, 29E | 1962 |
| Dempster & Sons | J. C. | Grass Valley, Grass Valley | 7MD and 33C, 25E | 1962 |
| Dempster & Sons | N. | Meedo Station & the Grange, Carnarvon & Irwin | 2DU and 53F, 20C | 1962 |
| Denabling Grazing Co. | - | Denablink, Narrogin | DO0 and 13B, 13E | 1962 |
| Denbigh | L. A. | Doodlakine, Doodlakine | L4D | 1912 |
| Denbigh | L. A. | Doodlakine | L4D | 1924 |
| Denby | Johnson | Jelba, Kellerberrin | 1DQ | 1912 |
| Denby | Johnson | Jelba, Kellerberrin | 1DQ | 1924 |
| Dench Bros. | - | Underdale, Dwarda | DU5 | 1924 |
| Denford | L. A. | 56 Buxton Street, Mt. Hawthorn | N8D | 1962 |
| Denham | C. (jnr.) | Tipperary, Beela Siding | CD6 and 45D, 25E | 1962 |
| Denham | Geo. H. | H. Farm 9095/74, Bussleton | 7GD | 1912 |
| Denham | Geo. H. | H. Farm 9095/74, Busselton | 7GD | 1924 |
| Denholm | Hy. | Kia-ora, Tenterden | 4HD | 1912 |
| Denholm | Hy. | Kia-ora, Tenterden | 4HD | 1924 |
| Denis | Agnes | Rose Valley, Toodyay | DU9 | 1924 |
| Denmark Agricultural Junior High School | - | 151, 152, 153, 161, 166, Denmark | D7S and 46B, 16A | 1962 |
| Denner | Robt. | Bluff Point, Geraldton | 4DR | 1924 |
| Denney | R. W. | Cloverdale, Cranbrook | 1AC and 49A, 11E | 1962 |
| Dennhardt | H. | Edenhall, Mt Barker | 2NQ | 1924 |
| Denning | F. H. | Milderhall, Nyabing, East Katanning | FD9 | 1924 |
| Denning | H. E. | Eselup, Picton | 1HD and 20A, 4C | 1962 |
| Denning | W. L. | Leschenault Loc., S. Bunbury | 8WD | 1962 |
| Denninup Vale Pastoral Co. | - | Wedderburn, Urella, Waterhall, Brunswick Junction Mingenew, Guildford | TA1 and 5B, 120A | 1962 |
| Dennis | A. J. | Grass Dale, Goomalling | 3JD | 1912 |
| Dennis | A. J. | Grass Dale, Goomalling | 3JD | 1924 |
| Dennis | A. S. | Swan Loc. 1779, Warbrook | S1D and 84B, 46A | 1962 |
| Dennis | F. C. H. | Marleyup, Kojonup | FH6 | 1912 |
| Dennis | F. H. | 2921-22, Rosa Brook | 7FD and 36B, 41E | 1962 |
| Dennis | G. T. | 2nd avenue, Claremont | D8L | 1924 |
| Dennis | H. B. | Glenriver, Hamilton Hill | V8D | 1962 |
| Dennis | H. G. | Mugga Muggin, Chitibin Mail | DH8 | 1924 |
| Dennis | H. W. | Misden, Miling | 0ND and 53F, 103B | 1962 |
| Dennis | Harold | Kunallin Farm, Upper Swan | HD1 | 1924 |
| Dennis | J. H. | Melb. 1815, Miling | JD6 and 59F, 12C | 1962 |
| Dennis | J. W. | 1548, 1549, Karridale | HD1 and 33C, 116A | 1962 |
| Dennis | K. D. | 1907, Rosa Brook | K2D and 25B, 3E | 1962 |
| Dennis | L. J. | Wongamine, Mugga Muggin | L1D | 1912 |
| Dennis | L. M. | Carwoola, Miling | D8L and 20B, 115A | 1962 |
| Dennis | L.J. | Wongamine, Mugga Muggin | L1D | 1924 |
| Dennis | R. Wm | Grassland, Grass Valley | R4D | 1912 |
| Dennis | R. Wm. | Grassland, Grass Valley | R4D | 1924 |
| Dennis | Thos. | Cross Valley, Wogamine, Northam | T4D | 1912 |
| Dennis | Thos. | Cross Valley, Wongamine | T4D | 1924 |
