| Duffield | F. B. | Leake Street, Cottesloe | Overland | 6076 | Metro Private Car | 1925-26 |
| Duffield | Harold | 26 Heytesbury Road, Subiaco | Studebaker | 127 | Metro Private Car | 1923-24 |
| Duke | Giles | Mount Barker | Ford 20 H.P. | PL 14 | Plantagenet Road Board | 1916 |
| Duke | Giles | Mount Barker | Ford 20 H.P. | PL ● 14 | Plantagenet Road Board | 1917-18 |
| Duke | Giles | Mount Barker | Ford 20 H.P. | PL ● 14 | Plantagenet Road Board | 1919 |
| Duncan | A. | Holyoake | Buick | MY ● 166 | Murray Road Board | 1927-28 |
| Duncan | G. | Kellerberrin | Ford | KE ● 336 | Kellerberrin Road Board | 1927-28 |
| Duncan | Kenneth | Hopetown Street, South Perth | Chevrolet | 1287 | Metro Private Car | 1927-28 |
| Duncan | Mrs R. | Kellerberrin | Ford | KE ● 208 | Kellerberrin Road Board | 1926-27 |
| Duncan | Mrs R. | Kellerberrin | Ford | KE ● 208 | Kellerberrin Road Board | 1927-28 |
| Duncan | R. | Kellerberrin | Ford | KE ● 69 | Kellerberrin Road Board | 1925-26 |
| Dungey | A. B. B. | Parkerville | Chevrolet | 16036 | Metro Private Car | 1927-28 |
| Dunham | A. | Parkerville | Ford Truck | GE ● 38 | Greenmount Road Board | 1924-25 |
| Dunkeld | G. | Lake Biddy | Ford Truck | LG ● 114 | Lake Grace Road Board | 1927-28 |
| Dunkerton | J. W. | 41 Holland Street, Fremantle | Ford | 4058 | Metro Private Car | 1923-24 |
| Dunkerton | J. W. | 41 Holland Street, Fremantle | Ford | 4058 | Metro Private Car | 1924-25 |
| Dunkerton | J. W. | 41 Holland Street, Fremantle | Ford | 4058 | Metro Private Car | 1925-26 |
| Dunkerton | J. W. | 41 Holland Street, Fremantle | Ford | 4058 | Metro Private Car | 1926-27 |
| Dunkerton | J. W. | 41 Holland Street, Fremantle | Fiat | 14380 | Metro Private Car | 1927-28 |
| Dunkley | C. R. | 65 Market Street, Fremantle | Chevrolet | 12274 | Metro Private Car | 1926-27 |
| Dunleavy | G. | Corner Vincent & Florence Strees | Studebaker 16 horserpower | P 521 | Perth Municipality | 1919 |
| Dunleavy | G. | Shaftesbury Hotel, Perth | Studebaker | 521 | Metro Private Car | 1922-23 |
| Dunleavy | G. | Cr. Beaufort Street and 4th Avenue, Ingelwood | Studebaker | 521 | Metro Private Car | 1923-24 |
| Dunleavy | G. | Beaufort Street & Fourth Avenue, Inglewood | S'baker | 521 | Metro Private Car | 1924-25 |
| Dunlop & Woodward | - | Rokeby Road, Subiaco | Wolseley Wagon | 3583 | Metro Private Car | 1924-25 |
| Dunlop & Woodward | - | Rockeby Road, Subiaco | Wolseley Wagon | 3583 | Metro Hire or Trade | 1925-26 |
| Dunn | C. S. H. | Mount Barker | Overland | PL ● 132 | Plantagenet Road Board | 1927-28 |
| Dunn | D. K | Tammin | Chevrolet | ME ● 101 | Meckering Road Board | 1927-28 |
| Dunnett & Dunn | Mrs & Miss | Nannup | Studebaker | BL ● 33 | Nannup Road Board | 1926-27 |
| Dunnett & Dunn | Mrs & Mrs | Nannup | Studebaker | BL ● 33 | Lower Blackwood Road Board | 1925-26 |
| Dunning | Mark | East Wickepin | Dodge | WK ● 40 | Wickepin Road Board | 1925-26 |
| Dunning | Mark | East Wickepin | Dodge | WK ● 66 | Wickepin Road Board | 1926-27 |
| Dunning | Mark | East Wickepin | Dodge | WK ● 66 | Wickepin Road Board | 1927-28 |
| Dunning | W. R. | Hamel | Ford Truck | DK ● 9 | Drakesbrook Road Board | 1926-27 |
| Dunning | W. R. | Hamel | Ford Truck | DK ● 9 | Drakesbrook Road Board | 1927-28 |
| Dunstan | E. E. | 71 Keightley Road, Subiaco | Essex | 6965 | Metro Private Car | 1926-27 |
| Dunstan | E. E. | 71 Keightley Road, Subiaco | Fiat | 4312 | Metro Private Car | 1927-28 |
| Durack | M. J. | Mundaring | Studebaker | GE ● 23 | Greenmount Road Board | 1924-25 |
| Durack | M. J. | Mundaring | Studebaker | GE ● 23 | Greenmount Road Board | 1927-28 |
| Durant | J. H. | 71 Cleaver Street, Perth | Studebaker | 2341 | Metro Private Car | 1923-24 |
| Durrant | Jas. H. | 71 Clever Street, Perth | Studebaker | 2341 | Metro Private Car | 1922-23 |
| Dvoretsky | S. | Albany | Studebaker 25 H.P. | A-K 7 | Armadale-Kelmscott Road Board | 1915 |
| Dvoretsky | S. | Armadale | Buick 26 H.P. | A-K ● 4 | Armadale-Kelmscott Road Board | 1924-25 |
| Dvoretsky | Samuel | Armadale | Buick 26 H.P. for Trade or Hire | A-K ● 4 | Armadale-Kelmscott Road Board | 1922-23 |
| Dvoretsky | Samuel | Armadale | Buick 26 H.P. | A-K ● 4 | Armadale-Kelmscott Road Board | 1923-24 |
| Dwyer | Agnes M. Sr. | Leake & Park streets, North Perth | Fiat | 2249 | Metro Private Car | 1927-28 |
| Dwyer | L. | 17 Alphonso Street, North Perth | Studebaker | 1364 | Metro Private Car | 1922-23 |
| Dwyer | L. | 17 Alphonso, Street, North Perth | Studebaker | 1364 | Metro Private Car | 1923-24 |
| Dwyer | Mrs M. | 20 Almondsbury Road, Mount Lawley | Studebaker | 9629 | Metro Private Car | 1926-27 |
| Dwyer | Mrs M. | 20 Almondbury Road, Mount Lawley | Studebaker | 9629 | Metro Private Car | 1927-28 |
