| Cariton | A. D. | 9 Mackie Street, Victoria Park | Ford | 13073 | Metro Private Car | 1927-28 |
| Carless | G. W. | Corrigin | Essex | CR ● 223 | Corrigin Road Board | 1926-27 |
| Carless | G. W. | Corrigin | Essex | CR ● 223 | Corrigin Road Board | 1927-28 |
| Carlile | Dr H. I. | Cunderdin | Overland | ME ● 341 | Meckering Road Board | 1927-28 |
| Carlile | Dr. H. L. | Leonora | Ford | LM ● 16 | Leonora-Malcolm Road Board | 1923-24 |
| Carlin | S. S. | 56 Edward Street, Nedlands | Citroen | 7774 | Metro Private Car | 1925-26 |
| Carlin | S. S. | 56 Edward Street, Nedlands | Citroen | 7774 | Metro Private Car | 1926-27 |
| Carlin | S. S. | 56 Edward Street, Nedlands | Citroen | 7774 | Metro Private Car | 1927-28 |
| Carlisle | Dr | 102 Cambridge Street, West Perth | Overland | 9233 | Metro Private Car | 1926-27 |
| Carlisle | Dr H. I. | Leonora | Ford | LM ● 16 | Leonora-Malcolm Road Board | 1924-25 |
| Carlisle | Dr H. I. | Leonora | Ford | LM ● 16 | Leonora-Malcolm Road Board | 1925-26 |
| Carlisle | T. C. | Fire Station, Queens Park | Overland | 11785 | Metro Private Car | 1926-27 |
| Carlisle | T. C. | Fire Station, Queens Park | Overland | 11785 | Metro Private Car | 1927-28 |
| Carlshausen | A. B. | Wubin | Ford | DL ● 42 | Dalwallinu Road Board | 1926-27 |
| Carlshausen | A. B. | Wubin | Ford | DL ● 42 | Dalwallinu Road Board | 1927-28 |
| Carlson | A. | Bunbury | Ford | By 67 | Bunbury Municipality | 1924-25 |
| Carlson | A. | Bunbury | Ford | BY 67 | Bunbury Municipality | 1925-26 |
| Carlson | A. | Bunbury | Ford | BY 67 | Bunbury Municipality | 1926-27 |
| Carlson | A. | Bunbury | Ford | BY 191 | Bunbury Municipality | 1927-28 |
| Carlson | A. P. D. | 29 Commercial Road, West Subiaco | Chevrolet | 2224 | Metro Private Car | 1927-28 |
| Carlson | H. | Balingup | Ford | BN 2 | Balingup Road Board | 1916 |
| Carlson | H. | Balingup | Ford 20 H.P. | BN ● 2 | Balingup Road Board | 1917-18 |
| Carlson | H. | Balingup | Ford 20 H.P. | BN ● 2 | Balingup Road Board | 1919 |
| Carlson | H. | Bunbury | Studebaker | By 115 | Bunbury Municipality | 1924-25 |
| Carlson | H. | Bunbury | Studebaker | BY 115 | Bunbury Municipality | 1926-27 |
| Carlson | H. W. | Bunbury | Studebaker | BY 115 | Bunbury Municipality | 1925-26 |
| Carlson | Henry | Balingup | Studebaker | BN ● 2 | Balingup Road Board | 1922-23 |
| Carlson | Henry | Balingup | Studebaker | BN ● 2 | Balingup Road Board | 1923-24 |
| Carlson | J. | Onslow | Ford Truck | AS ● 71 | Ashburton Road Board | 1926-27 |
| Carlson | J. | Onslow | Ford Truck | AS ● 71 | Ashburton Road Board | 1927-28 |
| Carlson | M. | Kunjin | Overland | CR ● 114 | Corrigin Road Board | 1925-26 |
| Carlson | N. | Mulline | Ford Truck | MN ● 30 | Menzies Road Board | 1925-26 |
| Carlson | O. | Kondinin | Ford | KN ● 15 | Kondinin Road Board | 1925-26 |
| Carlson | O. | Kondinin | Ford | KN ● 15 | Kondinin Road Board | 1926-27 |
| Carlson | O. | Kondinin | Ford | KN ● 15 | Kondinin Road Board | 1927-28 |
| Carlson | O. C. | Kondinin | Ford | RE ● 25 | Roe Road Board | 1923-24 |
| Carlsson | G. | Nulline | Ford Truck | MN ● 30 | Menzies Road Board | 1927-28 |
| Carlton | E. | Kalamunda | Ford Truck | DR ● 93 | Darling Range Road Board | 1927-28 |
| Carlton | Lady Jane | 9 Malcolm Street, Perth | Ford | 7979 | Metro Private Car | 1925-26 |
| Carlyle | W. | Commander Naval Staff Office Fremantle | Overland | 1166 | Metro Private Car | 1924-25 |
| Carlyle | W. Commander | Naval Staff Office, Fremantle | Overland | 1166 | Metro Private Car | 1923-24 |
| Carlyle | W. E. | 35 Malcolm Street, Fremantle | Federal | 3844 | Metro Hire or Trade | 1925-26 |
| Carlyle | W. E. | 35 Malcolm Street, Fremantle | Federal | 3844 | Metro Hire or Trade | 1926-27 |
| Carlyle | W. E. | 35 Malcolm Street, East Fremantle | Citroen | 11386 | Metro Private Car | 1926-27 |
| Carlyle | W. T. | Naval Staff Office Fremantle | Overland | 1166 | Metro Private Car | 1922-23 |
| Carlyle | W. T. | 35 Malcolm Street, Fremantle | Overland | 1423 | Metro Private Car | 1925-26 |
| Carlyon | A. | Yalgoo | Overland | YA ● 40 | Yalgoo Road Board | 1925-26 |
| Carlyon | A. | Yalgoo | Overland | YA ● 40 | Yalgoo Road Board | 1926-27 |
| Carlyon | A. | Yalgoo | Overland | YA ● 40 | Yalgoo Road Board | 1927-28 |
| Carlyon | Athol H. | 451 Hay Street, Perth | Indian | 32 | Metro Motorcycle | 1922-23 |
