| Duggan | T. | Northam | Ford | N ● 18 | Northam Road Board | 1922-23 |
| Duggan | T. | Northam | Ford | N ● 18 | Northam Road Board | 1923-24 |
| Duggan | T. | Northam | Maxwell | N ● 18 | Northam Road Board | 1924-25 |
| Duggan | T. | Northam | Maxwell | N ● 18 | Northam Road Board | 1925-26 |
| Duggan | Thos. | Northam | Ford 20 H.P. | N 36 | Northam Road Board | 1919 |
| Duirs | Rose | 703 Albany Road, Victoria Park | Singer | 13340 | Metro Private Car | 1927-28 |
| 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 |
| Dullard | Miss Betty | 5 Chatsworth Road, North Perth | Dort | 2637 | Metro Private Car | 1927-28 |
| Dullard | Thos. | 140 Hay Street, Perth | Overland | 1439 | Metro Private Car | 1923-24 |
| Dulley | J. F. | - | Triumph 3½ H.P. Motorcycle | KMC 33 | Kalgoorlie Municipality | 1915 |
| Dulley | J. F. | Lewis Street | Ford | KMC 169 | Kalgoorlie Municipality | 1924-25 |
| Dulley | J. F. | Lewis Street | Ford | KMC 169 | Kalgoorlie Municipal Council | 1925-26 |
| Dumas | R. J. | Metropolitan Water Supply, Perth | Chevrolet | 9073 | Metro Private Car | 1925-26 |
| Dumas | R. J. | Metropolitan Water Supply, Perth | Chevrolet | 9073 | Metro Private Car | 1926-27 |
| Dumas | R. J. | Bunbury Road, Armadale | Chevrolet | 9073 | Metro Private Car | 1927-28 |
| Dumbleyung Road Board | - | Dumbleyung | Chevrolet | DU ● 121 | Dumbleyung Road Board | 1925-26 |
| Dumbleyung Road Board | - | Dumbleyung | Chevrolet | DU ● 121 | Dumbleyung Road Board | 1926-27 |
| Dumbleyung Road Board | - | - | Graham Truck | DU ● 152 | Dumbleyung Road Board | 1926-27 |
| Dumbleyung Road Board | - | Dumbleyung | Chevrolet | DU ● 121 | Dumbleyung Road Board | 1927-28 |
| Dumbleyung Road Board | - | - | Graham Truck | DU ● 152 | Dumbleyung Road Board | 1927-28 |
| Dume | Paskov | Sandstone | Chevrolet | BR ● 17 | Black Range Road Board | 1924-25 |
| Dume | Paskoy | Sandstone | Chevrolet | BR ● 17 | Black Range Road Board | 1925-26 |
| Dume | Paskoy | Sandstone | Chevrolet | BR ● 17 | Black Range Road Board | 1927-28 |
| Dume Paskoy | - | Sandstone | Chevrolet | BR ● 17 | Black Range Road Board | 1926-27 |
| Dumford | R. H. | Parkston | Indian 7-9 H.P. Motorcycle | K ● 11 | Kalgoorlie Road Board | 1922-23 |
| Dumont | C. | Egan Street | Metz | KMC 112 | Kalgoorlie Municipal Council | 1925-26 |
| Dumore Manfg. Co | - | Melbourne Road, Perth | Overland | 2296 | Metro Private Car | 1923-24 |
| Dumsday | L. | Bay View Terrace, Claremont | - | C 62 | Claremont Municipality | 1919 |
| Dumsday | L. | Bay View Terrace, Claremont | Buick | 2288 | Metro Private Car | 1922-23 |
| Dumsday | Laurence | Bay View Terrace, Claremont | Buick | 2288 | Metro Private Car | 1923-24 |
| DUmsday | Laurence | Bay View Terrace, Claremont | Buick | 2288 | Metro Private Car | 1924-25 |
| Dumsday | Laurence | Bay View Terrace, Claremont | Buick | 2288 | Metro Private Car | 1925-26 |
| Dumsday | Laurence | Bay View Terrace, Claremont | Buick | 2288 | Metro Private Car | 1927-28 |
| Dunbar | J. J. | State Abattoirs Midland Junction | Overland | 6928 | Metro Private Car | 1925-26 |
| Dunbar | J. J. | State Abattoirs Midland Junction | Overland | 6928 | Metro Private Car | 1926-27 |
| Dunbar | J. J. | State Abattoirs Midland Junction | Overland | 6928 | Metro Private Car | 1927-28 |
| Dunbar | Mrs N | 40 Shepperton Road, Victoria Park | Dodge | 4890 | Metro Private Car | 1927-28 |
| Dunbar | Mrs N. | 40 Shepparton Road, Victoria Park | Talbot | 4890 | Metro Private Car | 1924-25 |
| Dunbar | Mrs N. | 40 Shepparton Road, Victoria Park | Dodge | 4890 | Metro Private Car | 1925-26 |
| Dunbar | Mrs N. | 40 Shepperton Road, Victoria Park | Dodge | 4890 | Metro Private Car | 1926-27 |
| Dunbar Bros | - | Carnarvon | Ford 19 H.P. | CN 15 | Carnarvon Municipal Council | 1922-23 |
| Dunbar Brothers | - | Carnarvon | Essex | CN 14 | Carnarvon Municipal Council | 1923 - 1924 |
| Dunbar Brothers | - | Carnarvon | Ford 19 H.P. | CN 15 | Carnarvon Municipal Council | 1923 - 1924 |
| Duncan | A. | Holyoake | Buick | MY ● 166 | Murray Road Board | 1927-28 |
| Duncan | A. E. | No. 2 State Mill Dwellingup | Buick | MY ● 166 | Murray Road Board | 1926-27 |
| Duncan | C. L. | South Greenough | Dodge | GH ● 14 | Greenough Road Board | 1924-25 |
| Duncan | C. L. | Greenough | Ford | GH ● 28 | Greenough Road Board | 1924-25 |
| Duncan | C. L. | Greenough | Dodge | GH ● 14 | Greenough Road Board | 1925-26 |
