| Coumbe | W. H. C. | - | Rudby | NA ● 79 | Nungarin Road Board | 1924-25 |
| Coumbe | W. H. C. | - | Rugby | NA ● 79 | Nungarin Road Board | 1927-28 |
| Council Elec. and Gas Department | P. C. | Perth | Citroen | 2658 | Metro Private Car | 1923-24 |
| Counsel | A. | Buntine | Ford | DL ● 63 | Dalwallinu Road Board | 1924-25 |
| Counsel | A. | Buntine | Ford | DL ● 63 | Dalwallinu Road Board | 1925-26 |
| Counsel | A. | Buntine | Ford | DL ● 63 | Dalwallinu Road Board | 1926-27 |
| Counsel | A. | Buntine | Ford | DL ● 63 | Dalwallinu Road Board | 1927-28 |
| Counsel | A. | Buntine | Ford | DL ● 167 | Dalwallinu Road Board | 1927-28 |
| Counsel | C. H. | Northampton | Ford 15 H.P. | N 11 | Northampton Road Board | 1915 |
| Counsel | C. H. | Northampton | Ford 15 H.P. | NR 11 | Northampton Road Board | 1916 |
| Counsel | C. H. | Northampton | Ford 15 H.P. | NR 11 | Northampton Road Board | 1919 |
| Counsel | C. H. | Northampton | Overland 19 H.P. | NR ● 28 | Northampton Road Board | 1922-23 |
| Counsel | C. H. | 26 Woodsome Street, Mount Lawley | Essex | 2837 | Metro Private Car | 1927-28 |
| Counsel | H. L. | Victoria Street, Cottesloe | Chevrolet | 2427 | Metro Private Car | 1922-23 |
| Counsel | H. L. | cr. Victoria & Glyde Streets, Cottesloe Beach | Hupmobile | 4622 | Metro Private Car | 1923-24 |
| Counsel | M. A. | 71 Farnley Street, Mount Lawley | Chevrolet | 2837 | Metro Private Car | 1923-24 |
| Counsel | M. A. | 71 Farnley Street, Mount Lawley | Chevrolet | 2837 | Metro Private Car | 1924-25 |
| Counsel | M. A. | 71 Farnley Street, Mount Lawley | Chevrolet | 2837 | Metro Private Car | 1925-26 |
| Counsel | R. | 143 Collins Street, Kalgoorlie | Overland | KMC 343 | Kalgoorlie Municipal Council | 1927-28 |
| Counsell | H. L. | Victoria Street, Cottesloe Beach | Hupmobile | 4622 | Metro Private Car | 1924-25 |
| Counsell | H. L. | Victoria Street, Cottesloe Beach | Hupmobile | 4622 | Metro Private Car | 1925-26 |
| Counsell | H. L. | Victoria Street, Cottesloe Beach | Hupmobile | 4622 | Metro Private Car | 1926-27 |
| Counsell | H. L. | Victoria Street, Cottesloe Beach | Hupmobile | 4622 | Metro Private Car | 1927-28 |
| Counsels Baking | - | 15 Forrest Place, Perth | Ford | 11789 | Metro Private Car | 1926-27 |
| Countessi | J. | Cobra | Overland | GU ● 31 | Upper Gascoyne Road Board | 1924-25 |
| Countessi | J. | Cobra Station | Overland | GU ● 31 | Upper Gascoyne Road Board | 1925-26 |
| Country Orders Ltd | - | 17 Weld Chambers, Perth | Essex | 13896 | Metro Private Car | 1927-28 |
| Couper | A. | - | Dodge | N ● 99 | Northam Road Board | 1927-28 |
| Couper | D. | Kunnunoppin | Overland | NG ● 26 | Ninghan Road Board | 1923-24 |
| Couper | D. A. | Kununoppin | Overland | KTY ● 26 | Kununoppin-Trayning Road Board | 1924-25 |
| Couper | D. A. | Kununoppin | Essex | KTY ● 26 | Kununoppin-Trayning Road Board | 1925-26 |
| Couper | D. A. | Kununoppin | Essex | KTY ● 26 | Kununoppin-Trayning Road Board | 1926-27 |
| Couper | D. A. | Kununoppin | Essex | KTY ● 26 | Kununoppin-Trayning Road Board | 1927-28 |
| Couper | J. K. | Dowerin | Ford 19 H.P. | D ● 39 | Dowerin Road Board | 1922-23 |
| Couper | J. K. | Dowerin | Ford | D ● 39 | Dowerin Road Board | 1923-24 |
| Couper | J. K. | Dowerin | Ford | D ● 39 | Dowerin Road Board | 1924-25 |
| Couper | J. K. | Dowerin | Ford | D ● 39 | Dowerin Road Board | 1925-26 |
| Couper | J. K. | Dowerin | Studebaker | D ● 39 | Dowerin Road Board | 1926-27 |
| Couper | J. K. | Dowerin | Studebaker | D ● 39 | Dowerin Road Board | 1927-28 |
| Couper | T. A. | - | Buick | MW ● 17 | Mullewa Road Board | 1927-28 |
| Coupland & Christie | - | 53 The Avenue, Nedlands | Ford Wagon | 8681 | Metro Private Car | 1925-26 |
| Courbcules | J. | Bilbarin | Buick | CR ● 11 | Corrigin Road Board | 1925-26 |
| Courbouies | John | Bilbarin | Studebaker | CR ● 11 | Corrigin Road Board | 1927-28 |
| Courboules | A. | Beverley | Ford | BEV 12 | Beverley Road Board | 1915 |
| Courboules | A. | Beverley | Overland | BE 12 | Beverley Road Board | 1916 |
| Courboules | A. H. | East Beverley | Ford 20 H.P. | BE ● 12 | Beverley Road Board | 1917-18 |
| Courboules | A. H. | East Beverley | Ford 20 H.P. | BE ● 12 | Beverley Road Board | 1919 |
| Courboules | A. H. | Bilbarin | Essex | CR ● 11 | Corrigin Road Board | 1922-23 |
| Courboules | A. H. | Bilbarin | Essex | CR ● 11 | Corrigin Road Board | 1923-24 |
| Courboules | J. | Bilbarrin | Essex | CR ● 11 | Corrigin Road Board | 1924-25 |
