| Conker | W. & H. | Morowa | Ford | PM ● 10 | Perenjori-Morawa Road Board | 1924-25 |
| Connally | J. D. | 6 King's Park Road | Studebaker 15 H.P. | P 642 | Perth Municipality | 1916 |
| Connell | Mrs M. | 32 Walker Street, Fremantle | Chevrolet | 6139 | Metro Private Car | 1924-25 |
| Connell | Mrs M. | 32 Walker Street, Fremantle | Chevrolet | 6139 | Metro Private Car | 1925-26 |
| Connell | Mrs M. | 32 Walker Street, Fremantle | Chevrolet | 6139 | Metro Private Car | 1926-27 |
| Connell | V. R. | 174 Forrest Street, East Fremantle | Studebaker | 1972 | Metro Private Car | 1923-24 |
| Connelly | Mrs E. M. | 11 Kenny Street, Subiaco | Maxwell | 4377 | Metro Private Car | 1925-26 |
| Connolly | J. D. | King's Park Road | Studebaker 15 H.P. | P 642 | Perth Municipality | 1915 |
| Connolly | M. | Doodlakine | Dodge | KE ● 167 | Kellerberrin Road Board | 1925-26 |
| Connolly | M. | Doodlakine | Dodge | KE ● 167 | Kellerberrin Road Board | 1927-28 |
| Connop | C. E. | Mount Lawley | Studebaker 20 H.P. | P 993 | Perth Municipality | 1917-18 |
| Connop | C. E. | Longroyd Street, Mount Lawley | Studebaker | 835 | Metro Private Car | 1923-24 |
| Connop | C. E. | Clive Road, Mount Lawley | Studebaker | 835 | Metro Private Car | 1924-25 |
| Connor | S. B. | Chidlow Street | Studebaker | N 32 | Northam Municipality | 1922-23 |
| Connor | S. B. | Chidlow Street | Studebaker | N 32 | Northam Municipality | 1923-24 |
| Connor | S. B. | Chidlow Street | Studebaker | N 32 | Northam Municipality | 1924-25 |
| Connor | S. B. | Fitzgerald Street | Studebaker | N 32 | Northam Municipality | 1925-26 |
| Connor | S. B. | 21 Rheola Street, West Perth | Studebaker | 335 | Metro Private Car | 1926-27 |
| Connor | S. B. | Fitzgerald Street | Studebaker | N 32 | Northam Municipality | 1926-27 |
| Connor | S. B. | 21 Rheoia Street, West Perth | Studebaker | 335 | Metro Private Car | 1927-28 |
| Conochie | D. M. | Malyalling | Harrison 3½ H.P. Motorcycle | WK ● 2 | Wickepin Road Board | 1917-18 |
| Conolly | M. | Doodlakine | Dodge | KE ● 167 | Kellerberrin Road Board | 1926-27 |
| Conroy | P. J. | 156 Rokeby Road, Subiaco | Federal | 10182 | Metro Hire or Trade | 1926-27 |
| Conway | C. | Cathedral Avenue | Studebaker 20 H.P. | GN 65 | Geraldton Municipality | 1922-23 |
| Conway | C. | Cathedral Avenue, Geraldton | Studebaker 20 H.P. | GN ● 65 | Geraldton Municipality | 1923-24 |
| Conway | C. | Marine Terrace, Geraldton | Studebaker | GN 65 | Geraldton Municipality | 1924-25 |
| Conway | C. | Marine Terrace, Geraldton | Studebaker | GN 65 | Geraldton Municipality | 1925-26 |
| Cook | F. | Tammin | Buick | ME ● 40 | Meckering Road Board | 1922-23 |
| Cook | F. | Tammin | Buick | ME ● 40 | Meckering Road Board | 1923-24 |
| Cook | G. S. | Lake Grace | Dodge | LG ● 21 | Lake Grace Road Board | 1924-25 |
| Cook | G. S. | Lake Grace | Ford Truck | LG ● 28 | Lake Grace Road Board | 1924-25 |
| Cook | G. S. | Lake Grace | Dodge | LG ● 21 | Lake Grace Road Board | 1925-26 |
| Cook | G. S. | Lake Grace | Dodge | LG ● 21 | Lake Grace Road Board | 1926-27 |
| Cook | G. S. | Lake Grace | Reo Truck | LG ● 40 | Lake Grace Road Board | 1926-27 |
| Cook | G. S. | Lake Grace | Reo | LG ● 40 | Lake Grace Road Board | 1927-28 |
| Cook | G. S. | Lake Grace | Reo Truck | LG ● 92 | Lake Grace Road Board | 1927-28 |
| Cook | H. | Tammin | Buick | ME ● 40 | Meckering Road Board | 1924-25 |
| Cook | H. | Tammin | Buick | ME ● 40 | Meckering Road Board | 1925-26 |
| Cook | H. | Tammin | Buick | ME ● 40 | Meckering Road Board | 1926-27 |
| Cook | H. | Tammin | Buick | ME ● 40 | Meckering Road Board | 1927-28 |
| Cook | J. R. | 39 Market Street, Fremantle | Dodge | 9749 | Metro Private Car | 1926-27 |
| Cook | S. | Coondle | Studebaker | T ● 143 | Toodyay Road Board | 1926-27 |
| Cook | S. | Coondle | Studebaker | T ● 143 | Toodyay Road Board | 1927-28 |
| Cook | W. R. | 339 Rokeby Road, Subiaco | Studebaker | 3363 | Metropolitan Hire and Trade Cars | 1923-24 |
| Cook | W. R. | 339 Rokeby Road, Subiaco | Studebaker | 6564 | Metro Private Car | 1924-25 |
| Cook Bros | - | Tammin | Trailer | ME ● 211 | Meckering Road Board | 1926-27 |
| Cook Bros | - | Tammin | Trailer | ME ● 211 | Meckering Road Board | 1927-28 |
| Cooke | A. | Minnivale | Ford | D ● 117 | Dowerin Road Board | 1925-26 |
| Cooke | A. | Minnivale | Ford | D ● 117 | Dowerin Road Board | 1926-27 |
| Cooke | A. | Grass Valley | Buick | N ● 46 | Northam Road Board | 1926-27 |
