| Driver | Edward | Goolaleal Lake, Wanneroo | 0DR | 1924 |
| Driver | F. M. | Ribbleton, Toolbrunup via Tambellup | 4FD and 12B, 27E | 1962 |
| Driver | James Fred | Ribbleton Farm, Toolbrunup, via Tambellup | 4FD | 1924 |
| Driver | R. | Woodleigh Estate, Yarloop | 1NZ | 1912 |
| Driver | R. | Woodleigh Estate, Yarloop | 1NZ | 1924 |
| Dromey | M. | Loc. 4376, Gunyidi | 7UD | 1924 |
| Drummond | Geo. | Four-Mile Creek, Balbarrup | G2D | 1912 |
| Drummond | Geo. | River View, Boyup Brook | 0GD | 1924 |
| Drummond | Geo. | Four-Mile Creek, Balbarrup | G2D | 1924 |
| Drummond | H. O. | Garden Valley Farm, York | 0UV | 1924 |
| Drummond | H. W. | Hillside, Benger | 2HD | 1912 |
| Drummond | H. W. | Hillside, Benger | 2HD | 1924 |
| Drummond | J. | Drummond Earnoch, Tardun | D8B and 44D, 19E | 1962 |
| Drummond | James Rawlinson | Rose Valley, Dandarragan | JD0 | 1924 |
| Drummond | Jas. | Yere Yere, Dandarragan | JD0 | 1912 |
| Drummond | M. R. | Exton Vale, Forest Grove | 6DJ and 50C, 46A | 1962 |
| Drummond | Margaret | Belvedere Farm, Narngulu | WD3 | 1924 |
| Drummond | W. | Avon Loc. 2913,5732-I, 4895, 3590, 740, East Pingelly | WD0 and 19D, 108E | 1962 |
| Drummond | Wm. | Drummond's Block, Walkaway | WD3 | 1912 |
| Drummond | Wm. | Sharks Bay | DX3 | 1924 |
| Drummond & Co. | J. H. | Strathallan, Bridgetown | 2HD and 71D, 20E | 1962 |
| Drummond Bros. | - | Plant. 6142, Mt Barker | PD2 and 103A, 29B | 1962 |
| Drummond-Hay | G. L. T. | La Pay, Kalgan | 9DH | 1924 |
| Drury | Chas. | Pallinup, Gnowangerup | 8DY | 1924 |
| Drury | James | Kwolyin Block 19, Kellerberrin | 7DR | 1924 |
| Drury | T. A. | Grandstand Loc. 17437-18/19, Kellerberrin | 7DR and 19A, 48B | 1962 |
| Drust | A. | Bottle House, Roc. Loc. 1943, Newdegate | D3A and 20B, 43E | 1962 |
| Drust | A. J. | Humberdale, Lake Varley | 2JD and 80A, 6C | 1962 |
| Drust | F. | Hessle Dale, Newdegate | 1FD and 102A, 24B | 1962 |
| Dry | H. & J. | Glen Valley, Chidlows | 2HJ and 44D, 41E | 1962 |
| Dryden | M. C. | 2409-11, Warner Glen, via Karridale | 1LD and 35B, 14E | 1962 |
| Dryer | A. O. | Minkadine, Kellerberrin | KX3 | 1925 |
| Drysdale | George | Yalgoo Commonage, Yalgoo | VQ8 | 1925 |
| Drysdale River Past. Co. Pty. Ltd. | - | Drysdale River, East Kimberly | C8T and 80D, 26E | 1962 |
| Du Boulay | C.H. | Mt Erin, Lot 23, Mt Erin, via Geraldton | 8DB and 6B, 119E | 1962 |
| Du Boulay | D. F. | Dale Farm, Nanson | 5DB and 3C, 16E | 1962 |
| Du Boulay | H. H. | Commonage, Mt. Magnet | 5DB | 1912 |
| Du Boulay | H. H. | Commonage, Mt. Magnet | 5DB | 1924 |
| Du Burgh Ker | E. & H. E. | West View Farm, Popanyinning | 5JY and 36D, 12E | 1962 |
| Du Plessis | P. J. | Wells Flats, P.O. Wilga | PD1 | 1928 |
| Duane & Co. | M. | Quinbery and Vic. 1910, Lots 2 and 3 and Block 103, Three Springs, Mingenew and Yandanooka | Z8M and 84E, 39D | 1962 |
| Ducas | C. T. & I. R. | Mill Farm, Greenough | DD4 and 12B, 6E | 1962 |
| Ducat | H. V. | Mon Abri, Rocky Gully | T2D and 115D, 11E | 1962 |
| Duce | John | Beidecud, Boyanup | 1JD | 1912 |
| Duce | John | Beidecud, Boanup | 1JD | 1924 |
| Duce & Son | G. B. | Bridecud Vineyard, Boyanup | D2E and | 1962 |
| Duce & Son | J. G. | A.A. Lots 30, 5/822, 1/280,28, Boyanup | 1JD and 41D, 40E | 1962 |
| Duckett | F. D. & T. L. | Hay Loc. 6579, Narrikup | TD0 and 118D, 50E | 1962 |
| Duckett | G. (jnr) | Locs. 5516, 680-1, 691, Denmark | 4YM | 1962 |
| Duckwood | V. M. | Ballandangan, Walkway | 7L0 and 9D,3E | 1962 |
