| Chester | C. G. | Mount Barker | Buick | PL ● 9 | Plantagenet Road Board | 1927-28 |
| Chesters | J. | Rokeby Road | Car | S 114 | Subiaco Municipality | 1917-18 |
| Chesters | J. | Rokeby Road | - | S 114 | Subiaco Municipality | 1919 |
| Chi | James | Broome | Studebaker for Trade or Hire | BM ● 13 | Broome Road Board | 1922-23 |
| Chi | James | Broome | Studebaker | M ● 11560 | Broome Road Board | 1923-24 |
| Chick's Garage | - | 220 Rokeby Road, Subiaco | Chrysler | 2414 | Metro Private Car | 1927-28 |
| Chidlow | B. P. | Fitzgerald Street | Studebaker | N 40 | Northam Municipality | 1926-27 |
| Chidlow | B. P. | Fitzgerald Street | Studebaker | N 40 | Northam Municipality | 1927-28 |
| Chilmaa | J. H. | Margaret Road | Studebaker 25 H.P. | MJ 21 | Midland Junction Municipality | 1916 |
| Chilman | J. H. | Margaret Road | Studebaker 30 H.P. | MJ 21 | Midland Junction Municipality | 1917-18 |
| Chilman | J. H. | Margaret Road | Studebaker 30 H.P. | MJ 21 | Midland Junction Municipality | 1919 |
| Chipper | G. F. | Meckering | Flat | ME ● 45 | Meckering Road Board | 1926-27 |
| Chipper | G. F. | Meckering | Fiat | ME ● 45 | Meckering Road Board | 1927-28 |
| Christensen | E. J. | Duke Street | Overland | N 173 | Northam Municipality | 1927-28 |
| Christensen | M. | Kellerberrin | Ford | KE ● 268 | Kellerberrin Road Board | 1927-28 |
| Christianson | Rev. | Meckering | Ford | ME ● 314 | Meckering Road Board | 1927-28 |
| Christison | R. | Tammin | Dodge | ME ● 61 | Meckering Road Board | 1923-24 |
| Christison | R. | Tammin | Dodge | ME ● 61 | Meckering Road Board | 1924-25 |
| Christison | R. | Tammin | Dodge | ME ● 61 | Meckering Road Board | 1925-26 |
| Christison | R. | Tammin | Dodge | ME ● 61 | Meckering Road Board | 1926-27 |
| Christison | R. | Tammin | Dodge | ME ● 61 | Meckering Road Board | 1927-28 |
| Church | L. | Leake Street | 4½ H.P. Motorcycle | PG ● 30 | Peppermint Grove Road Board | 1917-18 |
| Claire's | R. H. | Armadale | Chevrolet | A-K ● 64 | Armadale-Kelmscott Road Board | 1924-25 |
| Clancy | J. | Gnowangerup | Studebaker | GN ● 142 | Gnowangerup Road Board | 1926-27 |
| Clancy | J. | Gnowangerup | Studebaker | GN ● 142 | Gnowangerup Road Board | 1927-28 |
| Clark | A. | Kellerberrin | Ford | KE ● 27 | Kellerberrin Road Board | 1924-25 |
| Clark | A. | Kellerberrin | Garford Truck | KE ● 27 | Kellerberrin Road Board | 1925-26 |
| Clark | A. | Kellerberrin | GarFord Truck | KE ● 27 | Kellerberrin Road Board | 1926-27 |
| Clark | A. | Kellerberrin | Ford Truck | KE ● 219 | Kellerberrin Road Board | 1926-27 |
| Clark | A. | Kellerberrin | Garford Truck | KE ● 72 | Kellerberrin Road Board | 1927-28 |
| Clark | A. | Kellerberrin | Ford Truck | KE ● 219 | Kellerberrin Road Board | 1927-28 |
| Clark | A. & J. | Kellerberrin | Dodge | KE ● 60 | Kellerberrin Road Board | 1925-26 |
| Clark | A. & J. | Kellerberrin | Dodge | KE ● 60 | Kellerberrin Road Board | 1926-27 |
| Clark | A. & J. | Kellerberrin | Dodge | KE ● 60 | Kellerberrin Road Board | 1927-28 |
| Clark | Angas | Kellerberrin | Ford 19 H.P. | KE ● 27 | Kellerberring Road Board | 1923-24 |
| Clark | Angus | Kellerberrin | Ford 19 H.P. | KE ● 27 | Kellerberrin Road Board | 1922-23 |
| Clark | Cliff McKenzie | c/o. Winterbottom M.G. | Dodge | 633 | Metro Private Car | 1923-24 |
| Clark | P. C. D. | 10 Blake Street, North Perth | Whippet | 14892 | Metro Private Car | 1927-28 |
| Clark | W. T. | Dumbleyung | Studebaker | DU ● 47 | Dumbleyung Road Board | 1925-26 |
| Clark | W. T. | Dumbleyung | Studebaker | DU ● 47 | Dumbleyung Road Board | 1926-27 |
| Clark | W. T. | Dumbleyung | Studebaker | DU ● 47 | Dumbleyung Road Board | 1927-28 |
| Clark & Co | W. E. | Wagin | Studebaker 12 H.P. | WM 1 | Wagin Municipality | 1915 |
| Clark & Co | W. E. | Wagin | Studebaker 12 H.P. | WM 1 | Wagin Municipality | 1916 |
| Clark & Co | W. E. | Wagin | Studebaker 12 H.P. | WM 1 | Wagin Municipality | 1917-18 |
| Clarke | A. B. | Mount Barker | Dodge | PL ● 53 | Plantagenet Road Board | 1925-26 |
| Clarke | A. B. | Mount Barker | Dodge | PL ● 53 | Plantagenet Road Board | 1926-27 |
| Clarke | A. D. | 920 Hay Street, Perth | Chevrolet | 2863 | Metro Private Car | 1923-24 |
| Clarke | A. D. | 290 Hay Street, Perth | Chevrolet | 2863 | Metro Private Car | 1924-25 |
| Clarke | A. D. | 920 Hay Street, Perth | Chevrolet | 2863 | Metro Private Car | 1925-26 |
| Clarke | A. D. | 920 Hay Street, Perth | Chevrolet | 2863 | Metro Private Car | 1926-27 |
