| Howlett | G. | Marvel Loch | Ford | YL ● 1 | Yilgarn Road Board | 1925-26 |
| Howlett | G. A. | Kondinin | Chevrolet Truck | KN ● 83 | Kondinin Road Board | 1927-28 |
| Howlett | G. H. | Marvel Loch | Ford 20 H.P. | YL ● 1 | Yilgarn Road Board | 1919 |
| Howlett | G. H. | Marvel Loch | Ford | YL ● 1 | Yilgarn Road Board | 1922-23 |
| Howlett | G. H. | Marvel Loch | Ford | YL ● 1 | Yilgarn Road Board | 1923-24 |
| Howlett | G. H. | Marvel Loch | Ford | YL ● 1 | Yilgarn Road Board | 1924-25 |
| Howlett | Geo. | Marvel Loch | Ford Truck | YL ● 1 | Yilgarn Road Board | 1926-27 |
| Howlett | S. P. | Kellerberrin | Chrysler | KE ● 347 | Kellerberrin Road Board | 1927-28 |
| Howley | A. | Collie | Graham Truck | CM 142 | Collie Municipality | 1926-27 |
| Howley | A. | Collie | Graham Truck | CM 142 | Collie Municipality | 1927-28 |
| Howley | T. L. | 32 Grosvenor Road, Mount Lawley | Dodge | 14392 | Metro Private Car | 1927-28 |
| Howley | W. T. | 116 Grosvenor Road, North Perth | Dodge | 8565 | Metro Private Car | 1925-26 |
| Howling | H. | Cnr. Hay & Milligan Sts. | Maxwell | 357 | Metro Private Car | 1922-23 |
| Howling | H. | 941 Hay Street, Perth | Chevrolet | 1404 | Metro Private Car | 1922-23 |
| Howling | H. O. | Hay Street, Perth | Willy-Knight | 9195 | Metro Private Car | 1925-26 |
| Howling | H. O. | Hay Street, Perth | Willys-Knight | 9195 | Metro Private Car | 1926-27 |
| Howling | H. O. | Hay Street, Perth | Willys-Knight | 9195 | Metro Private Car | 1927-28 |
| Howling | Hugh | 941 Hay Street, Perth | Chevrolet | 1404 | Metro Private Car | 1923-24 |
| Howling | Hugh | 941 Hay Street, Perth | Chevrolet | 1401 | Metro Private Car | 1924-25 |
| Howling | Hugh | 941 Hay Street, Perth | Chevrolet | 1404 | Metro Private Car | 1925-26 |
| Hownsend | W. | Narrogin | Hupmobile | NGN 72 | Narrogin Municipality | 1925-26 |
| Howse | E. | Dardanup | Ford | DA ● 80 | Dardanup Road Board | 1927-28 |
| Howsen | A. | 162 Adelaide Terrace, Perth | Chevrolet | 11667 | Metro Private Car | 1927-28 |
| Howson | A. | 162 Adelaide Terrace, Perth | Chevrolet | 11667 | Metro Private Car | 1926-27 |
| Howson | E. W. | Shackleton | Ford | BK ● 196 | Bruce Rock Road Board | 1927-28 |
| Howson | F. R. | Palmerston Street, Cottesloe Beach | Citroen | 9175 | Metro Private Car | 1925-26 |
| Howson | F. R. | Palmerston Street, Cottesloe Perth | Citroen | 9175 | Metro Private Car | 1926-27 |
| Howson | F. R. | Palmerston Street, Cottesloe Beach | Citroen | 9175 | Metro Private Car | 1927-28 |
| Howson | J. | 10 Seaview Terrace, Swanbourne | Essex | 13592 | Metro Private Car | 1926-27 |
| Howson | J. | 10 Seaview Terrace, Swanbourne | Essex | 13592 | Metro Private Car | 1927-28 |
| Howson | L. M. | 21 Goldsworthy Road, Claremont | Morris-Cowley | 13267 | Metro Private Car | 1926-27 |
| Howson | L. M. | 21 Goldsworthy Road, Claremont | Morris Cowley | 13267 | Metro Private Car | 1927-28 |
| Howson | Mrs F. R. | Palmerston Street, Cott. Beach | Chevrolet | 6708 | Metro Private Car | 1924-25 |
| Howson | P. | Pemberton | Overland | WA ● 84 | Manjimup Road Board | 1925-26 |
| Hoy Poy | - | The Avenue, Nedlands | - | CL ● 40 | Claremont Road Board | 1919 |
| Hoy Poy | Y. | 297 James Street, Perth | Buick | 6535 | Metro Private Car | 1924-25 |
| Hoy Poy | Y. | 297 James Street, Perth | Buick | 6535 | Metro Private Car | 1925-26 |
| Hoy Poy | Y. | 297 James Street, Perth | Buick | 6535 | Metro Private Car | 1926-27 |
| Hoy Poy | Y. | 297 James Street, Perth | Buick | 6535 | Metro Private Car | 1927-28 |
| Hoyer | N. L. | Kurrawang | Chevrolet | CG ● 22 | Coolgardie Road Board | 1927-28 |
| Hoyle | Frank | Toolibin | Ford | WK ● 14 | Wickepin Road Board | 1924-25 |
| Hoyle | Frank | Toolibin | Ford | WK ● 14 | Wickepin Road Board | 1925-26 |
| Hoyle | Frank | Teelibin | Ford | WK ● 14 | Wickepin Road Board | 1926-27 |
| Hoyle | Frank | Toolibin | Ford | WK ● 14 | Wickepin Road Board | 1927-28 |
| Hresize | S. | Jardee | Ford | WA ● 35 | Manjimup Road Board | 1927-28 |
| Huban | P. | Egham Road, Victoria Park | Ford | 5771 | Metro Private Car | 1926-27 |
| Hubbard | A. W. | Broomehill | Dodge | BH ● 41 | Broomehill Road Board | 1922-23 |
| Hubbard | A. W. | Broomehill | Studebaker | BH 41 | Broomhill Road Board | 1923 - 1924 |
| Hubbard | A. W. | Broomehill | Studebaker | BH ● 41 | Broomehill Road Board | 1924-25 |
| Hubbard | A. W. | Broomehill | Studebaker | BH ● 41 | Broomehill Road Board | 1925-26 |