| Daff | A. | Boulder | Touring 12 H.P. | BMC 15 | Boulder Municipality | 1917-18 |
| Daff | A. | 86 Barker Road | - | S 147 | Subiaco Municipality | 1919 |
| Daff | Arthur | 86 Barker Road, Subiaco | Chevrolet | 4220 | Metro Private Car | 1927-28 |
| Daffin | H. A. | Dumbleyung | Overland | DU ● 102 | Dumbleyung Road Board | 1926-27 |
| Daffin | H. A. L. | Dumbleyung | Overland | DU ● 102 | Dumbleyung Road Board | 1925-26 |
| Daffin | H. A. L. | Dumbleyung | Overland | DU ● 102 | Dumbleyung Road Board | 1927-28 |
| Daglish | R. | Koorda | Hupmobile | WM ● 290 | Wyalkatchem Road Board | 1927-28 |
| Dahl | J. C. | Throssell Street | Ford | CM ● 23 | Collie Municipality | 1922-23 |
| Dahl | J. C. | Throssell Street, Collie | Ford | CM 23 | Collie Municipality | 1923-24 |
| Dahlburg | C. | Augusta | Ford Truck | AU ● 10 | Augusta Road Board | 1925-26 |
| Daigety & Co | - | Eleanor Street, Geraldton | Buick | GN 117 | Geraldton Municipality | 1926-27 |
| Daimpre | Rev. P. W. | Saint John's College | F.N. 2¾ H.P. Motorcycle | P 571 | Perth Municipality | 1916 |
| Dainton | S. | Shackleton | Essex | BK ● 149 | Bruce Rock Road Board | 1925-26 |
| Dainton | S. | Shackleton | Essex | BK ● 149 | Bruce Rock Road Board | 1926-27 |
| Dainton | S. | Shackleton | Essex | BK ● 149 | Bruce Rock Road Board | 1927-28 |
| Dairy Creek Pas. Co | - | Lower Clifton Downs | Itala 14-18 H.P. | GU ● 2 | Upper Gascoyne Road Board | 1917-18 |
| Dairy Creek Pas. Co | - | Dairy Creek | Itala 18 H.P. | GU ● 2 | Gascoyne Upper Road Board | 1919 |
| Dairy Creek Pas. Co | - | Dairy Creek | Itala 18 H.P. | GU ● 2 | Upper Gascoyne Road Board | 1922-23 |
| Dairy Creek Pastoral Co | - | Dairy Creek | Itatla 18 H.P. | GU ● 2 | Gascoyne Upper Road Board | 1923-24 |
| Dairy Creek Pastoral Co | - | Dairy Creek | Buick | GU ● 2 | Upper Gascoyne Road Board | 1924-25 |
| Dairy Creek Pastoral Co | - | Dairy Creek | Ford Truck | GU ● 54 | Upper Gascoyne Road Board | 1925-26 |
| Dairy Creek Pastoral Co | - | Dairy Creek | Chevrolet | GU ● 2 | Upper Gascoyne Road Board | 1926-27 |
| Dairy Creek Pastoral Co | - | Dairy Creek | Ford Truck | GU ● 54 | Upper Gascoyne Road Board | 1926-27 |
| Dairy Creek Pastoral Co | - | Dairy Creek | Chevrolet | GU ● 2 | Gascoyne Upper Road Board | 1927-28 |
| Dairy Creek Pastoral Co | - | Dairy Creek | Ford Truck | GU ● 54 | Gascoyne Upper Road Board | 1927-28 |
| Dairy Crook Pastoral Co | - | Gascoyne Junction | Buick | GU ● 2 | Upper Gascoyne Road Board | 1925-26 |
| Dairy Farmers Co-op. | - | Stewart Street, West Perth | Ford Van | 14077 | Metro Private Car | 1926-27 |
| Dairy Farmers Co-op. | - | Stuart Street, Perth | Ford Wagon | 13475 | Metro Private Car | 1926-27 |
| Dairy Farmers Co-op. | - | Stewart Street, West Perth | Ford Van | 14077 | Metro Private Car | 1927-28 |
| Dairy Farmers Co-op. | - | St.uart Street, Perth | Ford Van | 11940 | Metro Private Car | 1927-28 |
| Dairy Farmers Co-op.Ltd | - | Stuart Street, Perth | Ford Wagon | 13475 | Metro Private Car | 1927-28 |
| Dairy Farmers' Co-op. | - | Stuart Street, Perth | Ford Van | 15026 | Metro Private Car | 1927-28 |
| Daives | E. W. | Princess & Waroonga Roads Claremont | Oakland | 11068 | Metro Private Car | 1926-27 |
| Daives | E. W. | Princess & Waroonga Roads Claremont | Oakland | 11068 | Metro Private Car | 1927-28 |
| Dakin | F. H. | Bridgetown | Chevrolet | B ● 152 | Bridgetown Road Board | 1927-28 |
| Dakin | F. W. | Bridgetown | Chevrolet | B ● 152 | Bridgetown Road Board | 1926-27 |
| Dakin | H. L. | 101 Thomas Street, West Perth | Willy's-Knight | 2778 | Metro Private Car | 1923-24 |
| Dakin | H. L. | 101 Thomas Street, West Perth | Dodge | 13717 | Metro Private Car | 1926-27 |
| Dakin | H. L. | 101 Thomas Street, West Perth | Dodge | 13717 | Metro Private Car | 1927-28 |
| Dakin | N. L. | 101 Thomas Street, West Perth | Willys-Knight | 5760 | Metro Private Car | 1924-25 |
| Dakin | N. L. | 101 Thomas Street, West Perth | Willys-Knight | 5760 | Metro Private Car | 1925-26 |
| Dalbean | G. P. | 960 Hay Street, Perth | Triumph 2½ H.P. Motorcycle | P 56 | Perth Municipality | 1916 |
| Dalby | A. | Marble Bar | Chevrolet Truck | MB ● 16 | Marble Bar Road Board | 1925-26 |
| Dalby | R. W. | Quindalup | Ford | SU ● 30 | Sussex Road Board | 1925-26 |
| Dalby | R. W. | Quindalup | Ford | SU ● 30 | Sussex Road Board | 1926-27 |
| Dalby | R. W. | Quindalup | Ford | SU ● 30 | Sussex Road Board | 1927-28 |
| Dale | A. | Commonwealth Hotel, Collie | Sentur 3 ½ H.P. | CM 26 | Collie Municipality | 1919 |
| Dale | F. G. | 14 Croydon Street, West Subiaco | E.M.F | 3698 | Metro Hire or Trade | 1925-26 |
| Dale | H. A | Williams | Ford | WL ● 64 | Williams Road Board | 1926-27 |
| Dale | H. A. | Williams | Ford | WL ● 51 | Williams Road Board | 1925-26 |