| Dempster Bros. | - | Bynthalya Station | Ford 20 H.P. | GM ● 11 | Gascoyne-Minilya Road Board | 1919 |
| Dempster Bros. | - | Marran Station | Hupmobile 15 H.P. | GM ● 20 | Gascoyne-Minilya Road Board | 1919 |
| Dempster Bros. | - | Yalobia Station | Austin 15 H.P. | GM ● 10 | Gascoyne-Minilya Road Board | 1923-24 |
| Dempster's Estate | - | Toodyay | Ford Truck | T ● 117 | Toodyay Road Board | 1926-27 |
| Demster | G. | Benger | Hupmobile 25 H.P. | H ● 9 | Harvey Road Board | 1917-18 |
| Den | F. | Southern Brook | Ford | N ● 30 | Northam Road Board | 1924-25 |
| Dendaraga Station | - | Sandstone | Hupmobile | BR ● 12 | Black Range Road Board | 1925-26 |
| Denham | C. | Boddington | Thornycroft Wagon | MR ● 39 | Marradong Road Board | 1925-26 |
| Denham | C. | Boddington | Thornycroft Wagon | MR ● 39 | Marradong Road Board | 1926-27 |
| Denison | J. H. | 52 Railway Terrace, Perth | Chevrolet | 4877 | Metro Private Car | 1924-25 |
| Denison | J. H. | 52 Calway Street, Mount Lawley | Essex | 7890 | Metro Private Car | 1925-26 |
| Denison | J. H. | 52 Railway Terrace, Mount Lawley | Essex | 7890 | Metro Private Car | 1926-27 |
| Denison | J. H. | 34 Grosvenor Road, Mount Lawley | Essex | 7890 | Metro Private Car | 1927-28 |
| Dennall | E. W. | Welshpool | Chevrolet Truck | DR ● 142 | Darling Range Road Board | 1927-28 |
| Dennan | W. | Tammin | Chrysler | ME ● 9 | Meckering Road Board | 1926-27 |
| Denner | G. | - | Standard | MW ● 36 | Mullewa Road Board | 1927-28 |
| Denner | Geo. | Meekatharra | B.S.A. 4½ H.P. Motorcycle | - | Meekatharra Road Board | 1917-18 |
| Denney | D. M. | Byford | Ford Truck | A-K ● 109 | Armadale-Kelmscott Road Board | 1926-27 |
| Denning | A. J. | Bunbury | Regal | BY 53 | Bunbury Municipality | 1923 - 1924 |
| Denning | H. E. | Bunbury | Citroen (Baby) | BY 131 | Bunbury Municipality | 1925-26 |
| Denning | H. E. | Bunbury | Citroen (Baby) | BY 131 | Bunbury Municipality | 1926-27 |
| Denning | H. E. | Bunbury | Citroen | BY 131 | Bunbury Municipality | 1927-28 |
| Dennis | D. | Langham Street, Nedlands | Motorcycle | CL ● 4 ● | Claremont Road Board | 1917-18 |
| Dennis | D. | Langham Street, Nedlands | - | CL ● 4 | Claremont Road Board | 1919 |
| Dennis | E. | C/o Wigmore & Co. Perth | Moon | 2919 | Metro Private Car | 1927-28 |
| Dennis | F. C. H. | Marleyup via Kojonup | Ford 20 H.P. | KO 22 | Kojonup Road Board | 1919 |
| Dennis | F. C. H. | - | Studebaker 24 H.P. | B ● 30 | Bridgetown Road Board | 1922-23 |
| Dennis | F. C. H. | - | Studebaker 24 H.P. | B ● 30 | Bridgetown Road Board | 1923-24 |
| Dennis | F. C. H. | - | Studebaker | B ● 30 | Bridgetown Road Board | 1924-25 |
| Dennis | F. C. H. | Wilgarup | Studebaker | B ● 30 | Bridgetown Road Board | 1925-26 |
| Dennis | G. F. | Cunderdin | Buick | ME ● 202 | Meckering Road Board | 1925-26 |
| Dennis | G. F. | Cunderdin | Buick | ME ● 202 | Meckering Road Board | 1926-27 |
| Dennis | G. F. | Cunderdin | Buick | ME ● 202 | Meckering Road Board | 1927-28 |
| Dennis | H. | Wanneroo | Ford Wagon | WN ● 13 | Wanneroo Road Board | 1927-28 |
| Dennis | H. J | Wanneroo | OverlandCar | WN ● 4 | Wanneroo Road Board | 1926-27 |
| Dennis | H. J | Wanneroo | Stanley Steam | WN ● 13 | Wanneroo Road Board | 1926-27 |
| Dennis | H. J. | Wanneroo | Overland | WN ● 3 | Wanneroo Road Board | 1925-26 |
| Dennis | H. J. | Wanneroo | Stanley Steam | WN ● 13 | Wanneroo Road Board | 1925-26 |
| Dennis | H. J. (Jnr. ) | Wanneroo | Overland Car | WN ● 4 | Wanneroo Road Board | 1927-28 |
| Dennis | H. R. J. | Kojonup | Chevrolet | KO ● 107 | Kojonup Road Board | 1925-26 |
| Dennis | H. R. J. | Kojonup | Chevrolet | KO ● 107 | Kojonup Road Board | 1926-27 |
| Dennis | H. R. J. | Kojonup | Chevrolet | KO ● 107 | Kojonup Road Board | 1927-28 |
| Dennis | Henry J. | Wanneroo | Overland | WN ● 3 | Wanneroo Road Board | 1924-25 |
| Dennis | Henry James | Garland Street Vic. Park | Ford 15 H.P. | P 49 | Perth Municipality | 1917-18 |
| Dennis | Henry James | Garland Street, Victoria Park | Ford 20 H.P. | P 49 | Perth Municipality | 1919 |
| Dennis | J. H. | Parkers Road | Ford | YL ● 51 | Yilgarn Road Board | 1926-27 |
| Dennis | M. | Parker's Road | Ford Wagon | YL ● 23 | Yilgarn Road Board | 1925-26 |
| Dennis | R. S. | Mount Helena | Ford | GE ● 45 | Greenmount Road Board | 1925-26 |
| Dennis | R. S. | Mount Helena | Ford | GE ● 45 | Greenmount Road Board | 1926-27 |
| Dennis | R. S. | Mount Helena | Ford | GE ● 45 | Greenmount Road Board | 1927-28 |
