| Defence Department | - | Perth | Ford Amb. | 958 | Metro Private Car | 1927-28 |
| Defence Dept. | - | Perth | Ford Amb. | 958 | Metro Private Car | 1924-25 |
| Defence Dept. | - | Francis Street, Perth | Thornycroft Wagon | 7269 | Metro Private Car | 1926-27 |
| Defence Dept. | - | Francis Street, Perth | Thornycroft Wagon | 7269 | Metro Private Car | 1927-28 |
| Degby | H. L. | 10 Stanley Street, Mount Lawley | Davidson 7 H.P. Motorcycle | P 15 | Perth Municipality | 1917-18 |
| DeGrancey | M. J. H. O. | Park Lane Claremont | Overland | 2429 | Metro Private Car | 1922-23 |
| DeGrey Pastoral Co | - | C/o W.A.T.C. Buildings, Perth | Buick | 4800 | Metro Private Car | 1926-27 |
| DeGruchey | J. | 42 Angove Street, North Perth | Overland | 13029 | Metro Private Car | 1926-27 |
| Degruchey | John | Kondinin | Indian Motorcycle | - | Roe Road Board | 1922-23 |
| DeGruchy | W. V. | Kondinin | Chrysler | KN ● 27 | Kondinin Road Board | 1927-28 |
| Deimel | H. V. | 16 Carr Street, West Perth | Chevrolet | 7062 | Metro Private Car | 1927-28 |
| DeKerloy | J. M. | 130 Adelaide Terrace, Perth | Chrysler | 11283 | Metro Private Car | 1926-27 |
| Delamere | J. | 79 Cottesloe Avenue, Cottesloe | Ford Wagon | 8633 | Metro Private Car | 1926-27 |
| Delamore | J. | 79 Cottesloe Avenue, Cottesloe | Ford Wagon | 3594 | Metro Hire or Trade | 1924-25 |
| Delane | G. V. | Geelakin | Chevrolet | WT ● 86 | Westonia Road Board | 1927-28 |
| Delaney | C. M. | Bunbury | Chevrolet | BY 24 | Bunbury Municipality | 1925-26 |
| Delaney | C. M. | Bunbury | Chevrolet | BY 24 | Bunbury Municipality | 1926-27 |
| Delaney | J. | Kojonup | Ford 20 H.P. | KO ● 6 | Kojonup Road Board | 1917-18 |
| Delaney | J. | Kojonup | Ford 20 H.P. | KO 6 | Kojonup Road Board | 1919 |
| Delaney | J. | Kojonup | Ford | KO ● 6 | Kojonup Road Board | 1922-23 |
| Delaney | J. | Kojonup | Ford | KO ● 2 | Kojonup Road Board | 1924-25 |
| Delaney | J. | Kojonup | Ford | KO ● 2 | Kojonup Road Board | 1925-26 |
| Delaney | J. | Kojonup | Ford | KO ● 2 | Kojonup Road Board | 1926-27 |
| Delaney | J. | Kojonup | Ford | KO ● 2 | Kojonup Road Board | 1927-28 |
| Delaney | John | Kojonup | Ford | KO ● 6 | Kojonup Road Board | 1923-24 |
| Delaney | Mrs D. | 153 Central Avenue, Inglewood | Pontiac | 13757 | Metro Private Car | 1926-27 |
| Delaney | Mrs I | 153 Centreal Avenue, Inglewood | Pontiac | 13757 | Metro Private Car | 1927-28 |
| Delanrer | J. | 79 Cottesloe Avenue, Cottesloe | Ford Wagon | 8633 | Metro Private Car | 1925-26 |
| Delaport | B. | Hammersley | - | T ● 4 | List of Motor Cars at Tableland | 1919 |
| Delaport | B. | Hammersley | Studebaker | TB ● 6 | Tambellup Road Board | 1922-23 |
| Delaport | B. | Hammersley | Studebaker | TB ● 6 | Tableland Road Board | 1923-24 |
| Delaporte | - | Capel | Ford | CP ● 94 | Capel Road Board | 1927-28 |
| Delaporte | H. T. | Bunbury | Ford | BY 183 | Bunbury Municipality | 1927-28 |
| Delavale | H. | Tambellup | Overland 20 H.P. | T 6 | Tambellup Road Board | 1915 |
| Delavale | H. | Wyalkatchem | Dodge | WM ● 53 | Wyalkatchem Road Board | 1923-24 |
| Delbridge | F. G. | - | Chevrolet | GO ● 114 | Goomalling Road Board | 1926-27 |
| Delbridge | F. G. | - | Chevrolet | GO ● 114 | Goomalling Road Board | 1927-28 |
| Delfs | J. | | Ford Truck | By 113 | Bunbury Municipality | 1924-25 |
| Delfs | J. | Bunbury | Ford Truck | BY 113 | Bunbury Municipality | 1925-26 |
| Delfs | J. A. | Cunderdin | Ford | ME ● 129 | Meckering Road Board | 1925-26 |
| Delinage & Stephen | - | Dongara | Ford 20 H.P. | DR 4 | Irwin Road Board | 1915 |
| Delisle | Miss M. | Beverley | Ford | BE ● 244 | Beverley Road Board | 1925-26 |
| Delisle | Miss M. | Beverley | Ford | BE ● 244 | Beverley Road Board | 1926-27 |
| Delisle | Miss M. | Beverley | Whippet | BE ● 124 | Beverley Road Board | 1927-28 |
| Della | A. | Moodiarrup | Ford | AW ● 17 | West Arthur Road Board | 1927-28 |
| Della | A. | Wannamal | Overland Wagon | CH ● 27 | Chittering Road Board | 1927-28 |
| Della | Bosca A. | Cunderdin | F.W.D Truck | ME ● 171 | Meckering Road Board | 1925-26 |
| Della | Bosca A. | Cunderdin | Trailer | ME ● 210 | Meckering Road Board | 1927-28 |
| Della | P. | Collie | Chevrolet | CM 24 | Collie Municipality | 1927-28 |
| Della | Pietra J. | Lawlers | De Dion 7 H.P. | LA 6 | Lawlers Roads Borad | 1916 |
