| Officer | Dr. E. | 32 King Park Road, Perth | Singer | 13 | Metro Private Car | 1923-24 |
| Officer | Dr. Ed. | 32 King's Park Road | Dodge | 189 | Metro Private Car | 1923-24 |
| Officer | E. A. | 32 King's Park Road | Singer 12 H.P. | P 13 | Perth Municipality | 1919 |
| Officer | E. A. | 32 King's Park Road | Dodge 20 H.P. | P 189 | Perth Municipality | 1919 |
| Officer | E. A. | 32 King's Park Road | Dodge 20 H.P. | P 455 | Perth Municipality | 1919 |
| Officer | E. B. | 32 King's Park Road, West Perth | Wolseley | 1333 | Metro Private Car | 1927-28 |
| Officer | Ed Dr. | 32 King's Park Road, Perth | Dodge | 189 | Metro Private Car | 1925-26 |
| Officer | Mrs E. B. | 32 King's Park Road, West Perth | Wolseley | 189 | Metro Private Car | 1927-28 |
| Officer Ed. | Dr. | 22 King's Park Road, Perth | Dodge | 455 | Metro Private Car | 1923-24 |
| Officer Thomas | - | Benger | Ford 19 H.P. | H ● 14 | Harvey Road Board | 1922-23 |
| Offord | H. | Kelmscott | Overland | 12613 | Metro Private Car | 1926-27 |
| Offord | H. | Kelmscott | Overland | 12613 | Metro Private Car | 1927-28 |
| Offord | H. T. | Albany | Darracq 25 H.P. | A 15 | Albany Municipality | 1916 |
| Offord | H. T. | Albany | Fadens Steam Engine 25 H.P. | A 50 | Albany Municipality | 1916 |
| Offord | H. T. | Albany | Foden 25 H.P. | A 50 | Albany Municipality | 1917-18 |
| Offord | H. T. | Albany | Fodden 25 H.P. | A 50 | Albany Municipality | 1919 |
| Offord | H. T. | Kelmscott | Overland | A-K ● 31 | Armadale-Kelmscott Road Board | 1924-25 |
| Offord | Herbert Thomas | Kelmscott | Overland | A-K ● 30 | Armadale-Kelmscott Road Board | 1922-23 |
| Offord | Herbert Thomas | Kelmscott | Overland | A-K ● 31 | Armadale-Kelmscott Road Board | 1923-24 |
| Offord | W. | Margaret River | Buick | AU ● 16 | Augusta Road Board | 1925-26 |
| Offord | W. | Boyanup | Buick | DA ● 86 | Dardanup Road Board | 1927-28 |
| Offreidy | V. J. | Collie | Rugby | CM 212 | Collie Municipality | 1927-28 |
| Ogden | C. | Dowerin | Oakland | D ● 59 | Dowerin Road Board | 1923-24 |
| Ogden | C. | Dowerin | Fiat | D ● 59 | Dowerin Road Board | 1924-25 |
| Ogden | C. | Dowerin | Fiat | D ● 59 | Dowerin Road Board | 1925-26 |
| Ogden | C. H. | Dowerin | Triumph Motorcycle | D ● 9 | Dowerin Road Board | 1922-23 |
| Ogden | C. H. | Merredin | Oakland | MD ● 36 | Merredin Road Board | 1927-28 |
| Ogden | Charles | Merredin | Fiat | MD ● 98 | Merredin Road Board | 1926-27 |
| Ogden | W. W. | Coyrecup | Overland | KA ● 159 | Katanning Road Board | 1925-26 |
| Ogden | W. W. | Coyrecup | Rugby | KA ● 159 | Katanning Road Board | 1926-27 |
| Ogden | W. W. | Katanning | Rugby | KA ● 159 | Katanning Road Board | 1927-28 |
| Ogden | Wm. | - | Studebaker 12-16 H.P. | KMC 25 | Kalgoorlie Municipality | 1915 |
| Ogen | E. | 364 Egan Street | Studebaker 16 H.P. | KMC 25 | Kalgoorlie Municipality | 1916 |
| Ogg | John | York | Ford | Y 119 | York Municipality | 1923-24 |
| Ogg | John | York | Ford | Y 119 | York Municipality | 1924-25 |
| Ogilvie | A. | Phillip Street, Maddington | Whippet | 14033 | Metro Private Car | 1926-27 |
| Ogilvie | A. | Phillip Street, Maddington | Whippet | 14033 | Metro Private Car | 1927-28 |
| Ogilvie | E. M. | Broome | Chevrolet | BM ● 66 | Broome Road Board | 1926-27 |
| Ogler | C. E. | 49 Perth-Fremantle Road, Claremont | Chevrolet | 15919 | Metro Private Car | 1927-28 |
| Oglesby | H. M. | 57 Rupert Street, Subiaco | Overland | 6739 | Metro Private Car | 1925-26 |
| Oglesby | H. M. | 57 Rupert Street, Subiaco | Overland | 6739 | Metro Private Car | 1926-27 |
| Oglesby | H. N. | 57 Rupert Street, Subiaco | Whippet | 6739 | Metro Private Car | 1927-28 |
| Ogston | B. | Buntine | Ford | DL ● 202 | Dalwallinu Road Board | 1927-28 |
| Ohe | P. | Mandurah | Fiat | MY ● 195 | Murray Road Board | 1926-27 |
| Ohensloger | T. E. Miss | 1158 Hay Street, Perth | Ford | 2684 | Metro Private Car | 1923-24 |
| Ohisson | C. | 173 Newcastle Street, Perth | Ford | 9698 | Metro Private Car | 1926-27 |
| Ohisson | C. | 173 Newcastle Street, Perth | Ford | 9698 | Metro Private Car | 1927-28 |
| Ohl | P. | Mandurah | Essex | MY ● 101 | Murray Road Board | 1924-25 |
| Ohl | P. | Mandurah | Essex | MY ● 101 | Murray Road Board | 1925-26 |
| Ohl | P. | Mandurah | Fiat | MY ● 195 | Murray Road Board | 1927-28 |
