| Cadwallader | G. | No. 2 State Mill, Dwellingup | Dodge | MY ● 140 | Murray Road Board | 1927-28 |
| Cadwallader | G. T. | Dwellingup | International Truck | MY ● 20 | Murray Road Board | 1927-28 |
| Cadwallader | J. | Yorkrakine | Jewett | KE ● 148 | Kellerberrin Road Board | 1925-26 |
| Cadwallader | J. | Korkrakine | Jewett | KE ● 148 | Kellerberrin Road Board | 1926-27 |
| Cadwallader | J. | Yorkrakine | Jewett | KE ● 148 | Kellerberrin Road Board | 1927-28 |
| Cadwallader | W. A. | Wubin | Chevrolet | DL ● 97 | Dalwallinu Road Board | 1925-26 |
| Cadwallader | W. A. | Wubin | Essex | DL ● 172 | Dalwallinu Road Board | 1927-28 |
| Cadwallader | W. G. | Pithara | Studebaker | DL ● 111 | Dalwallinu Road Board | 1925-26 |
| Cadwallander | W. A. | Wubin | Chevrolet | DL ● 97 | Dalwallinu Road Board | 1926-27 |
| Cadwallander | W. G. | Pithara | Studebaker | DL ● 111 | Dalwallinu Road Board | 1926-27 |
| Cadwallder | W. G. | Pithara | Studebaker | DL ● 111 | Dalwallinu Road Board | 1927-28 |
| Caesar | E | South Street, Fremantle | Dodge | 12327 | Metro Private Car | 1927-28 |
| Caesar | H. W. | 183 Queen Victoria Street, Fremantle | Ford | 6064 | Metro Private Car | 1926-27 |
| Caesar | P. | 183 Queen Victoria Street, Fremantle | Chevrolet | 11582 | Metro Private Car | 1927-28 |
| Caeser | H. W. | 183 Queen Victoria Street, Fremantle | Ford | 6064 | Metro Private Car | 1924-25 |
| Caeser | H. W. | 183 Queen Victoria Street, Fremantle | Ford | 6064 | Metro Private Car | 1925-26 |
| Caeser | H. W. | 183 Queen Victoria Street, Fremantle | Ford | 6064 | Metro Private Car | 1927-28 |
| Caeser | H. W. | Queen Victoria Street, Fremantle | Rugby | 15947 | Metro Private Car | 1927-28 |
| Caeser | P. R. | 183 Queen Victoria Street, Fremantle | Studebaker | 1887 | Metro Private Car | 1924-25 |
| Cafarela | Felicis | 31 Market Street | Ford 15 horespower | F117 | Fremantle Municipality | 1916 |
| Cahill | B. M. | Nangeenan | Dodge | MD ● 90 | Merredin Road Board | 1927-28 |
| Cahill | D. | Nabawah | Chevrolet | CU 26 | Chapman Upper Road Board | 1923 - 1924 |
| Cahill | D. | Nabawah | Ford | CU ● 26 | Upper Chapman Road Board | 1924-25 |
| Cahill | D. | Nabawa | Chevrolet | CU ● 26 | Upper Chapman Road Board | 1925-26 |
| Cahill | D. | Nabawah | Chevrolet | CU ● 26 | Upper Chapman Road Board | 1926-27 |
| Cahill | Dan | - | Buick | CU ● 177 | Upper Chapman Road Board | 1927-28 |
| Cahill | E. S. | Southern Cross | Rugby | YL ● 45 | Yilgarn Road Board | 1926-27 |
| Cahill | J. A. | Shenton Street, Geraldton | Fiat | GN 42 | Geraldton Municipality | 1927-28 |
| Cahill | K. | Mundaring | Ford | GE ● 10 | Greenmount Road Board | 1925-26 |
| Cahill | Mrs B. M. | Nangeenan | Dodge | MD ● 90 | Merredin Road Board | 1924-25 |
| Cahill | Mrs B. M. | Nangeenan | Dodge | MD ● 90 | Merredin Road Board | 1926-27 |
| Cahill | MrsB. M. | Nangeenan | Dodge | MD ● 90 | Merredin Road Board | 1925-26 |
| Cahill | V. | Mundaring | Ford | GE ● 10 | Greenmount Road Board | 1927-28 |
| Cahn | A. W. | Subiaco Hotel, Subiaco | Chevrolet | 8707 | Metro Private Car | 1925-26 |
| Cahn | A. W. | Subiaco Hotel, Subiaco | Chevrolet | 8707 | Metro Private Car | 1926-27 |
| Cahn | Albert H. | Victoria Hotel, Subiaco | Chevrolet | 1348 | Metro Private Car | 1927-28 |
| Cailes | A. S. | Boyup Brook | Buick | BU ● 12 | Upper Blackwood Road Board | 1924-25 |
| Cailes | A. S. | Boyup Brook | Buick | BU ● 12 | Upper Blackwood Road Board | 1925-26 |
| Cailes | A. S. | Boyup Brook | Buick | BU ● 12 | Upper Blackwood Road Board | 1926-27 |
| Cailes | A. S. | Boyup Brook | Buick | BU ● 12 | Upper Blackwood Road Board | 1927-28 |
| Cailes | Albert Simon | Boyup Brook | Buick | Bu ● 12 | Upper Blackwood Road Board | 1922-23 |
| Cailes | Albert Simon | Boyup Brook | Buick | BU ● 12 | Blackwood (Upper) Road Board | 1923-24 |
| Cailes | Chas J. | 71 Glendower Street, North Perth | Triumph | 33 | Metro Motorcycle | 1922-23 |
| Cailes | L. R. | Boyup Brook | Ford Truck | BU ● 64 | Upper Blackwood Road Board | 1927-28 |
| Cailoid Ltd | - | Milton Street, Perth | Ford Wagon | 6512 | Metro Private Car | 1925-26 |
| Cailyle | O. L. | 35 Malcolm Street, Fremantle | Oakland | 10360 | Metro Hire or Trade | 1926-27 |
| Caimanes Bros | - | Marbellup | Chevrolet | A ● 40 | Albany Road Board | 1927-28 |
| Caimanos Bros | - | Marbellup | Chevrolet Truck | A ● 87 | Albany Road Board | 1927-28 |
| Cain | Charles | 67 Blencowe Street, West Leederville | Dodge | 639 | Metro Private Car | 1927-28 |
| Cain | F. | 51 Broome Street, Cottesloe | Ford | 4048 | Metro Private Car | 1925-26 |
