| Carter | J. R. | Jardee | Studebaker | WA ● 30 | Manjimup Road Board | 1927-28 |
| Carter | John R. | Jarnadup | Studebaker | WA ● 30 | Warren Road Board | 1923-24 |
| Carter | John R. | Jarnadup | Studebaker | WA ● 30 | Warren Road Board | 1924-25 |
| Carter | M. W. | Meckering | Ford | ME ● 72 | Meckering Road Board | 1923-24 |
| Carter | N. | Cunderdin North | Chevrolet | ME ● 115 | Meckering Road Board | 1924-25 |
| Carter | N. | Cunderdin N | Chevrolet | ME ● 115 | Meckering Road Board | 1925-26 |
| Carter | N. | Cunderdin N. | Chevrolet | ME ● 115 | Meckering Road Board | 1926-27 |
| Carter | N. | Cunderdin | Chevrolet | ME ● 115 | Meckering Road Board | 1927-28 |
| Carter | V. E. | Meckering | Rugby | ME ● 153 | Meckering Road Board | 1927-28 |
| Carter | W. E. | Meckering | Rugby | ME ● 153 | Meckering Road Board | 1925-26 |
| Carter | W. E. | Meckering | Rugby | ME ● 153 | Meckering Road Board | 1926-27 |
| Carter | Wm. | 168 Barker Road, Subiaco | Diamond J.A.P. | 1084 | Metro Motorcycle | 1922-23 |
| Carter & Kenny | - | Perth | Rugby | 2361 | Metro Private Car | 1926-27 |
| Cartledge | J. H. & A. H. | Ivy Street, West Perth | Studebaker 30 H.P. | P 822 | Perth Municipality | 1919 |
| Cartledge & Son | J. H. | Ivy Street | Studebaker 30 H.P. | P 822 | Perth Municipality | 1917-18 |
| Cartledge and Son | - | Ivy Street, West Perth | Studebaker | 822 | Metro Private Car | 1923-24 |
| Caruthers | Jack | Lake Grace | Dodge | LG ● 2 | Lake Grace Road Board | 1923-24 |
| Casey | - | Lake Margaret | - | MM ● 87 | Mount Marshall Road Board | 1926-27 |
| Cassells | J. B. | 137 Adelaide Terrace, Perth | Studebaker | 3128 | Metropolitan Hire and Trade Cars | 1923-24 |
| Cassells | J. B. | 137 Adelaide Terrace, Perth | Studebaker | 3128 | Metro Private Car | 1924-25 |
| Cassells | J. B. | 138 Adelaide Terrace, Perth | Studebaker | 3128 | Metro Hire or Trade | 1925-26 |
| Cassells | J. B. | 137 Adelaide Terrace, Perth | Studebaker | 3128 | Metro Hire or Trade | 1926-27 |
| Cassels | J. B. | Suburban Road | Studebaker 20 H.P. | SP 12 | South Perth Municipality | 1917-18 |
| Cassels | J. B. | Suburban Road, South Perth | Studebaker 26 H.P. | P 78 | Perth Municipality | 1917-18 |
| Cassels | J. B. | Suburban Road, South Perth | Studebaker 26 H.P. | P 661 | Perth Municipality | 1917-18 |
| Cassels | J. B. | Suburban Road | Studebaker 20 H.P. | SP 12 | South Perth Municipality | 1919 |
| Cassels & Phillips | - | Murray Street | Studebaker 20 H.P. | P 78 | Perth Municipality | 1919 |
| Cassels & Phillips | - | Murray Street | Studebaker 20 H.P. | P 294 | Perth Municipality | 1919 |
| Cassels & Phillips | - | Central Motor Garage | Studebaker 18 H.P. | P 660 | Perth Municipality | 1919 |
| Cassels & Phillips | - | Central Motor Garage | Studebaker 20 H.P. | P 661 | Perth Municipality | 1919 |
| Castle | Y. D. | Dumbleyung | Studebaker | DU ● 125 | Dumbleyung Road Board | 1927-28 |
| Castledine | C. | Meckering | Dodge | ME ● 92 | Meckering Road Board | 1923-24 |
| Castledine | C. | Meckering | Dodge | ME ● 92 | Meckering Road Board | 1924-25 |
| Castledine | C. | Meckering | Dodge | ME ● 92 | Meckering Road Board | 1925-26 |
| Castledine | C. | Cunderdin | Garford Truck | ME ● 176 | Meckering Road Board | 1925-26 |
| Castledine | C. | Meckering | Moon | ME ● 92 | Meckering Road Board | 1926-27 |
| Castledine | C. | Cunderdin | Garford Truck | ME ● 176 | Meckering Road Board | 1926-27 |
| Castledine | C. | Meckering | Moon | ME ● 92 | Meckering Road Board | 1927-28 |
| Castledine | C. | Cunderdin | Garford Truck | ME ● 176 | Meckering Road Board | 1927-28 |
| Castledine | F. | Kellerberrin | Ford | KE ● 63 | Kellerberrin Road Board | 1927-28 |
| Castledine | G. | Meckering | Rugby | ME ● 122 | Meckering Road Board | 1924-25 |
| Castledine | G. | Meckering | Rugby | ME ● 122 | Meckering Road Board | 1925-26 |
| Castledine | G. | Meckering | Rugby | ME ● 122 | Meckering Road Board | 1926-27 |
| Castledine | G. D. C. | Kellerberrin | Chrysler | KE ● 321 | Kellerberrin Road Board | 1927-28 |
| Catchpole | G. | Pickering Brook | Overland | DR ● 13 | Darling Range Road Board | 1923-24 |
| Catchpole | H. J. | Pickering Brook | Gray | DR ● 13 | Darling Range Road Board | 1924-25 |
| Catchpole | H. J. | Pickering Brook | Gray | DR ● 13 | Darling Range Road Board | 1925-26 |
| Catchpole | H. J. | Pickering Brook | Gray | DR ● 13 | Darling Range Road Board | 1926-27 |
| Catchpole | H. J. | Pickering Brook | Oldsmobile | DR ● 13 | Darling Range Road Board | 1927-28 |
| Cater | F. J. | Wickepin | Dodge | WK ● 77 | Wickepin Road Board | 1925-26 |
