| Catchpole | H. J. | Broad Arrow | Ford Truck - Hire | K ● 8 | Kalgoorlie Road Board | 1927-28 |
| Catchpole | H. J. | Pickering Brook | Oldsmobile | DR ● 13 | Darling Range Road Board | 1927-28 |
| Catchpole & Miller | - | Wittenoom Street, Collie | Ford | CM 111 | Collie Municipality | 1925-26 |
| Catchpole & Miller | - | Collie | Rugby | CM 157 | Collie Municipality | 1927-28 |
| Cater | F. J. | Wickepin | Dodge | WK ● 77 | Wickepin Road Board | 1925-26 |
| Cathie | A. | Fitzgerald Street | Triumph Motorcycle | N 10 | Northam Municipality | 1917-18 |
| Cathie | A. | Fitzgerald Street | Triumph | N 10 | Northam Municipality | 1919 |
| Catholic Church | - | - | Buick | NR ● 49 | Northampton Road Board | 1926-27 |
| Catholic Church | - | Northampton | Oldsmobile | NR ● 49 | Northampton Road Board | 1927-28 |
| Catlett | S. | Bunbury | Oakland | BY 201 | Bunbury Municipality | 1927-28 |
| Catlow | T. W. | Brown Street, East Perth | Morris Oxford | 5178 | Metro Private Car | 1927-28 |
| Cato | F. W. | 1265 Hay Street | E.M.F. 18 H.P. | P 774 | Perth Municipality | 1915 |
| Cato | F. W. | 1265 Hay Street | W.P.M.C. 3½ H.P. Motorcycle | P 3 | Perth Municipality | 1915 |
| Cato | F. W. | West Perth Motor Garage | Stellite 10 H.P. | P 855 | Perth Municipality | 1916 |
| Cato | F. W. | 1265 Hay Street | W.P.M.C. 3½ H.P. Motorcycle | P 3 | Perth Municipality | 1916 |
| Cato | F. W. | West Perth Motor Garage | Renault 10 H.P. | P 38 | Perth Municipality | 1917-18 |
| Cato | F. W. | 1273 Hay Street West | Car | P 308 | Perth Municipality | 1917-18 |
| Cato | F. W. | West Perth Motor Garage | Renault 10 H.P. | P 38 | Perth Municipality | 1919 |
| Cato | F. W. | 1273 Hay Street, West | Car | P 308 | Perth Municipality | 1919 |
| Cato | F. W. | 1273 Hay Street, West | Standard 15 H.P. | P 936 | Perth Municipality | 1919 |
| Cato | F. W. | 1273 Hay Street, West Perth | Maxwell | 936 | Metro Private Car | 1922-23 |
| Cato | F. W. | 1273 Hay Street, Perth | Maxwell | 936 | Metro Private Car | 1923-24 |
| Cato | F. W. | 1273 Hay Street, Perth | Singer | 936 | Metro Private Car | 1924-25 |
| Cato | F. W. | 1273 Hay Street, West Perth | Dealers | 20013 | Metro Dealers Car | 1925-26 |
| Cato | F. W. | 1273 Hay Street, Perth | Singer | 936 | Metro Private Car | 1925-26 |
| Cato | F. W. | 1273 Hay Street, Perth | Singer | 936 | Metro Private Car | 1926-27 |
| Cato's Garage | - | 1273 Hay Street, Perth | Dealers | 20013 | Metro Dealers Car | 1924-25 |
| Caton | Rev G. T. | Angleo Street, South Perth | Dodge | 717 | Metro Private Car | 1925-26 |
| Caton | Rev. G. T | Angelo Street, South Perth | Dodge | 717 | Metro Private Car | 1926-27 |
| Caton | Rev. G. T. | Angelo Street, South Perth | Dodge | 717 | Metro Private Car | 1927-28 |
| Cats | F. W. | Hay Street, Perth | Dealers | 20143 | Metro Dealers Car | 1926-27 |
| Cats | F. W. | Hay Street, West Perth | Dealers | 20143 | Metro Dealers Car | 1927-28 |
| Cattach | P. | Yarloop | Chevrolet | H ● 81 | Harvey Road Board | 1924-25 |
| Cattach | P. | Yarloop | Chevrolet | H ● 81 | Harvey Road Board | 1925-26 |
| Cattach | P. | Yarloop | Chevrolet | H ● 81 | Harvey Road Board | 1926-27 |
| Cattach | P. | Yarloop | Chevrolet | H ● 81 | Harvey Road Board | 1927-28 |
| Cattell | A. H. | 307 North Beach Road, Leederville | Overland | 2481 | Metro Private Car | 1922-23 |
| Cattell | A. H. | 307 North Beach Road, Leederville | Overland | 2481 | Metro Private Car | 1923-24 |
| Cattell | A. H. | 370 North Beach Road, Leederville | Essex | 1154 | Metro Private Car | 1926-27 |
| Catterall | F. | Hampshire Road, Victoria Park | Ford Wagon | 3434 | Metro Private Car | 1924-25 |
| Catterall | Frederick | Hampshire Road, Victoria Park | Ford Wagon | 3434 | Metropolitan Hire and Trade Cars | 1923-24 |
| Catterall | Gladys F. | 60 Highway Nedlands | Ford | 1241 | Metro Private Car | 1927-28 |
| Catterall | Rev. W. | Busselton | B.S.A. 4 H.P. | BN 2 | Busselton Municipality | 1916 |
| Cattermole | J. | Dangin | Ford | Q ● 279 | Quairading Road Board | 1927-28 |
| Catto | G. | Carnamah | Oakland | CA ● 35 | Carnamah Road Board | 1926-27 |
| Catto | G. | Carnamah | Chrysler | CA ● 35 | Carnamah Road Board | 1927-28 |
| Caughn | V. E. | Geraldton | Dodge | GN 57 | Geraldton Municipality | 1924-25 |
| Caulfield | M. | Dowerin | Chevrolet Truck | D ● 192 | Dowerin Road Board | 1927-28 |
| Caulfield | M. | Dowerin | Ford | D ● 218 | Dowerin Road Board | 1927-28 |
| Cause | J. | Narembeen | Ford | NB ● 103 | Nareembeen District Road Board | 1926-27 |
