| Joyce Bros. Ltd | - | 22 St.Leonard's Avenue | Dodge 20 H.P. | P 123 | Perth Municipality | 1919 |
| Joyce Bros. Ltd | - | Josephson Street, Fremantle | Dodge | 100 | Metro Private Car | 1923-24 |
| Joyner | A. E. | 13 Rheola Street, West Perth | Fiat | 4666 | Metro Private Car | 1923-24 |
| Joyner | A. E. | Rheola Street, West Perth | Hudson | 5599 | Metro Private Car | 1924-25 |
| Joyner | A. E. | 13 Rheola Street, Perth | Fiat | 99 | Metro Private Car | 1925-26 |
| Joyner | A. E. | 13 Rheola Street, West Perth | Fiat | 99 | Metro Private Car | 1926-27 |
| Joyner | A. E. | 13 Rheola Street, West Perth | Fiat | 99 | Metro Private Car | 1926-27 |
| Joyner | A. E. | 13 Rheola Street, West Perth | Fiat | 99 | Metro Private Car | 1927-28 |
| Joyner | J. A. | Doodlakine | Overland 26 H.P. | KE ● 38 | Kellerberrin Road Board | 1922-23 |
| Joyner | J. A. | Doodlakine | Overland 26 H.P. | KE ● 38 | Kellerberring Road Board | 1923-24 |
| Joyner | J. A. | Doodlakine | Overland | KE ● 38 | Kellerberrin Road Board | 1924-25 |
| Joyner | J. A. | Doodlakine | Overland | KE ● 38 | Kellerberrin Road Board | 1925-26 |
| Joyner | J. A. | Doodlakine | Overland | KE ● 38 | Kellerberrin Road Board | 1926-27 |
| Joyner | J. A. | 22 Goldsworthy Road, Claremont | Austin | 1614 | Metro Private Car | 1927-28 |
| Joyner | Mrs E. R. P. | 13 Rheola Street, West Perth | Chrysler | 19 | Metro Private Car | 1925-26 |
| Joyner | Mrs E. R. P. | 13 Rheola Street, West Perth | Chrysler | 19 | Metro Private Car | 1926-27 |
| Joyner | Mrs E. R. P. | 13 Rheola Street, West Perth | Chrysler | 19 | Metro Private Car | 1927-28 |
| Joyner | R. | Parkers Road | Ford Truck | YL ● 4 | Yilgarn Road Board | 1926-27 |
| Joynes | A. | Jitarning | Chevrolet | KU ● 110 | Kulin Road Board | 1927-28 |
| Joynes | A. T. | Jitarning | Clyno | KU ● 114 | Kulin Road Board | 1927-28 |
| Joynes | G. W. | Koorda | Ford | WM ● 246 | Wyalkatchem Road Board | 1926-27 |
| Joynes | G. W. | Koorda | Ford | WM ● 246 | Wyalkatchem Road Board | 1927-28 |
| Joynson | C H W. | North Dandalup | Ford | MY ● 2 | Murray Road Board | 1925-26 |
| Joynson | C. H. W. | North Dandalup | Ford | MY ● 2 | Murray Road Board | 1923-24 |
| Joynson | C. H. W. | North Dandalup | Ford | MY ● 2 | Murray Road Board | 1924-25 |
| Jribverger | R. | 18 Norfolk Street, Fremantle | Rugby | 12226 | Metro Private Car | 1926-27 |
| Jubilee Downs Station | - | Derby | Ford Truck | KW ● 16 | West Kimberley Road Board | 1925-26 |
| Jubilee Downs Station | - | Derby | Ford Truck | KW ● 16 | West Kimberley Road Board | 1926-27 |
| Jubilee Downs Station | - | Derby | Ford Truck | KW ● 16 | West Kimberley Road Board | 1927-28 |
| Judd | C. | Balingup | Austin | BN ● 39 | Balingup Road Board | 1926-27 |
| Judd | C. | Balingup | Austin | BN ● 39 | Balingup Road Board | 1927-28 |
| Judd | Chas. | 83 Queen Victoria Street, Fremantle | Ford | 9256 | Metro Private Car | 1927-28 |
| Judd | F. G. | 83 Queen Victoria Street, Fremantle | Ford | 9256 | Metro Private Car | 1926-27 |
| Judd | J. | 7 Hart Avenue, North Perth | Ford 20 H.P. | P 1050 | Perth Municipality | 1917-18 |
| Judd | J. | 7 Hart Avenue, North Perth | Ford 20 H.P. | P 1050 | Perth Municipality | 1919 |
| Judd | J. | 47 Clifton Crescent, Mount Lawley | Durant | 121 | Metro Private Car | 1926-27 |
| Judd | J. | 47 CliftonCrescent, Mount Lawley | Durant | 121 | Metro Private Car | 1927-28 |
| Judd | John | 42 Clifton Terrace, Mount Lawley | Ford | 135 | Metro Private Car | 1922-23 |
| Judd | John | 42 Clifton Crescent, Mount Lawley | Oakland | 121 | Metro Private Car | 1923-24 |
| Judd | John | 42 CliftonCrescent, Mount Lawley | Oakland | 121 | Metro Private Car | 1925-26 |
| Judd | John | 47 Clifton Crescent, Mount Lawley | Durant | 121 | Metro Private Car | 1926-27 |
| Judge | A. M. | Calingiri | Overland | VP ● 37 | Victoria Plains Road Board | 1925-26 |
| Judge | P. | 237 Thomas Street | Motorcycle | S 42 | Subiaco Municipality | 1917-18 |
| Judge | P. | 237 Thomas Street | - | S 42 | Subiaco Municipality | 1919 |
| Judge | R. M. | Toodyay | Austin | T ● 94 | Toodyay Road Board | 1925-26 |
| Judge | Robert M. | Koolanooka | Austin | PM ● 184 | Perenjori-Morawa Road Board | 1927-28 |
| Judge | T. C. H. | Merredin | Ford 20 H.P. | MRB 26 | Merredin Road Board | 1915 |
| Judge | T. C. H. | Merredin | Ford 20 H.P. | MD 26 | Merredin Road Board | 1916 |
| Judge | W. A. K. | 152 Royal Street, East Perth. | Douglas | 860 | Metro Motorcycle | 1922-23 |
| Judge Smith & Co | - | Surrey Chambers | Douglas 2¾ H.P. Motorcycle | P 433 | Perth Municipality | 1915 |
