| Cowden | H. | 16 Abbotsford Street, West Leederville | Buick | 7485 | Metro Private Car | 1925-26 |
| Cowden | H. | 16 Abbotsford Street, West Leederville | Buick | 7485 | Metro Private Car | 1926-27 |
| Cowden | Mrs H. | 6 Abbotsford Street, West Leederville | Buick | 7485 | Metro Private Car | 1927-28 |
| Cowderoy | A. | Greenbushes | Overland 20 H.P. | GR ● 11 | Greenbushes Road Board | 1919 |
| Cowderoy | A. | Greenbushes | Overland 20 H.P. | GR ● 11 | Greenbushes Road Board | 1922-23 |
| Cowderoy | A. | Greenbushes | Overland 20 H.P. | GR ● 11 | Greenbushes Road Board | 1923-24 |
| Cowderoy | A. | 27 Victoria Parade, Claremont | Morris-Cowley | 8004 | Metro Private Car | 1925-26 |
| Cowderoy | A. | 27 Victoria Parade, Claremont | Morris-Cowley | 8004 | Metro Private Car | 1926-27 |
| Cowderoy | E. | Carnamah | Morris | CA ● 236 | Carnamah Road Board | 1927-28 |
| Cowell | A. | Albany | E.M.F. 30 H.P. | A 12 | Albany Municipality | 1915 |
| Cowell | A. | Albany | E.M.F. 30 H.P. | A 12 | Albany Municipality | 1916 |
| Cowell | A. | Frederick Street | E.M.F. 25 H.P. | A 12 | Albany Municipality | 1919 |
| Cowell | A. | Peel Place | Overland | A 9 | Albany Municipality | 1922-23 |
| Cowell | A. | Albany | Overland | A 9 | Albany Municipality | 1923-24 |
| Cowell | A. | Hydrodrome, South Fremantle | Overland | 4090 | Metro Private Car | 1923-24 |
| Cowell | A. | Katanning | Buick | KA ● 340 | Katanning Road Board | 1927-28 |
| Cowell | A. | Katanning | Dodge | KA ● 341 | Katanning Road Board | 1927-28 |
| Cowell | R. C. | Collie | Chrysler | CM 124 | Collie Municipality | 1927-28 |
| Cowell | W. | 204 Railway Terrace, Maylands | Morris-Cowley | 11722 | Metro Private Car | 1926-27 |
| Cowell | W. | 204 Railay Terrace, Maylands | Morris-Cowley | 11722 | Metro Private Car | 1927-28 |
| Cowen | E. T. | Kojonup | Dodge | KO ● 183 | Kojonup Road Board | 1927-28 |
| Cowen | J. F | Albany | Maxwell 20 H.P. | A 74 | Albany Municipality | 1915 |
| Cowen | W. J. | Bridgetown | Dodge | B ● 129 | Bridgetown Road Board | 1925-26 |
| Cowen | W. J. | Bridgetown | Dodge | B ● 129 | Bridgetown Road Board | 1926-27 |
| Cowen | W. J. | Bridgetown | Dodge | B ● 129 | Bridgetown Road Board | 1927-28 |
| Cowie | J. A. | Cooks Agency High Street, Fremantle | stellite | 12275 | Metro Private Car | 1926-27 |
| Cowie | J. A. | 27 High Street, Fremantle | Stellite | 12275 | Metro Private Car | 1927-28 |
| Cowin | E. A | Williams | Ford | WL ● 10 | Williams Road Board | 1926-27 |
| Cowin | E. A. | Williams | Ford | WL ● 9 | Williams Road Board | 1925-26 |
| Cowin | T. A | Williams | Buick | WL ● 38 | Williams Road Board | 1926-27 |
| Cowin | T. A. | Williams | Buick | WL ● 38 | Williams Road Board | 1925-26 |
| Cowin | T. A. | Williams | Chevrolet | WL ● 38 | Williams Road Board | 1927-28 |
| Cowin | T. A. | Williams | Chevrolet Truck | WL ● 64 | Williams Road Board | 1927-28 |
| Cowin | T. A. | Williams | Chevrolet Truck | WL ● 120 | Williams Road Board | 1927-28 |
| Cowin | Thomas A. | Williams | Buick | WL ● 38 | Williams Road Board | 1924-25 |
| Cowing | T. | Kulin | Reo Truck | RE ● 115 | Roe Road Board | 1925-26 |
| Cowle | A. M. | 43 Hubert Street, Victoria Park | Ford | 14603 | Metro Private Car | 1927-28 |
| Cowley | E. | Bridgetown | Chevrolet Truck | B ● 171 | Bridgetown Road Board | 1926-27 |
| Cowley | E. | Bridgetown | Chevrolet Truck | B ● 171 | Bridgetown Road Board | 1927-28 |
| Cowling | E. E. | Capel | Ford | CP ● 106 | Capel Road Board | 1927-28 |
| Cowlishaw | A. | 66 Allen Street, East Fremantle | Overland | 15873 | Metro Private Car | 1927-28 |
| Cox | A. | Moora | Pontiac | M ● 228 | Moora Road Board | 1927-28 |
| Cox | A. E. & A. B. | Howard Street, Perth | Davis | 6651 | Metro Private Car | 1925-26 |
| Cox | A. E. & A. B. | Howard Street, Perth | Davis | 6652 | Metro Private Car | 1925-26 |
| Cox | A. E. & A. B. | Howard Street, Perth | Davis | 6652 | Metro Private Car | 1926-27 |
| Cox | A. E. & A. B. | Harper's Buildings, Perth | Buick | 13484 | Metro Private Car | 1926-27 |
| Cox | A. E. & A. B. | Howard Street, Perth | Davis | 6652 | Metro Private Car | 1927-28 |
| Cox | A. J. | Queen's Road, South, Guildford | Ford | 16002 | Metro Private Car | 1927-28 |
| Cox | C. | Belka | Hupmobile | MD ● 116 | Merredin Road Board | 1924-25 |
| Cox | C. L. F. | Bruce Rock | Rugby | BK ● 140 | Bruce Rock Road Board | 1925-26 |
