| Johnston | Leslie Georges | Mount Barker | Oakland 25 H.P. | PL ● 51 | Plantagenet Road Board | 1922-23 |
| Johnston | M. J. | 29 Boundary Road, Midland June | Studebaker | 3702 | Metro Hire or Trade | 1924-25 |
| Johnston | Maud J. | Kenny Street, Bassendean | Studebaker | 3392 | Metropolitan Hire and Trade Cars | 1923-24 |
| Johnston | Miss J. | 53 Lawley Crescent, Mount Lawley | Overland | 2735 | Metro Private Car | 1924-25 |
| Johnston | Miss J. | 53 Longroyd Street, Mount Lawley | Overland | 2735 | Metro Private Car | 1925-26 |
| Johnston | Miss J. | 38 Longroyd Street, Mount Lawley | Overland | 2735 | Metro Private Car | 1926-27 |
| Johnston | Miss J. E. | 38 Longroyd Street, Mount Lawley | Morris Oxford | 2735 | Metro Private Car | 1927-28 |
| Johnston | Mrs L. G. | Tambellup | Rugby | TA ● 59 | Tambellup Road Board | 1925-26 |
| Johnston | Mrs L. G. | Tambellup | Rugby | TA ● 59 | Tambellup Road Board | 1926-27 |
| Johnston | Mrs L. G. | Tambellup | Rugby | TA ● 59 | Tambellup Road Board | 1927-28 |
| Johnston | Mrs V. H. | Leschenault, Bunbury | Oakland | BB ● 5 | Bunbury Road Board | 1925-26 |
| Johnston | Mrs V. H. | Leschenault Bunbury | Oakland | BB ● 5 | Bunbury Road Board | 1926-27 |
| Johnston | O. | 1 Dorothy Street, Fremantle | Rugby | 12294 | Metro Private Car | 1926-27 |
| Johnston | O. | 1 Dorothy Street, Fremantle | Rugby | 12294 | Metro Private Car | 1927-28 |
| Johnston | P. H. | Kuringup | Dodge | KT ● 8 | Kent Road Board | 1925-26 |
| Johnston | P. H. | Kuringup | Dodge | KT ● 8 | Kent Road Board | 1926-27 |
| Johnston | P. H. | Kuringup | Dodge | KT ● 8 | Kent Road Board | 1927-28 |
| Johnston | Peter | Roleystone | Ford Wagon | 12623 | Metro Private Car | 1927-28 |
| Johnston | R. | Popanyinning | Rugby | CN ● 37 | Cuballing Road Board | 1925-26 |
| Johnston | Richard | 181 Newcastle Street, Perth | Ford | 2645 | Metro Private Car | 1927-28 |
| Johnston | Robert | Billaricay | Fiat | CR ● 81 | Corrigin Road Board | 1927-28 |
| Johnston | S. | Coburn Station, Hamelin Pool | Dodge | SB ● 2 | Shark Bay Road Board | 1925-26 |
| Johnston | S. | Coburn Station, Hamelin Pool | Dodge | SB ● 2 | Shark Bay Road Board | 1926-27 |
| Johnston | S. St. M. | Hamelin Pool | Ford | SB ● 2 | Shark Bay Road Board | 1922-23 |
| Johnston | S. St. M. | Hamelin Pool | Ford | SB ● 2 | Sharks Bay Road Board | 1923-24 |
| Johnston | Stan | Northcliffe | Chevrolet | WA ● 219 | Manjimup Road Board | 1927-28 |
| Johnston | T. | Burekup | Chevrolet | DA ● 42 | Dardanup Road Board | 1925-26 |
| Johnston | T. W. | Burekup | Chevrolet | DA ● 42 | Dardanup Road Board | 1926-27 |
| Johnston | V. R. | Greenbushes | Dodge Bros. 20 H.P. | GR ● 10 | Greenbushes Road Board | 1917-18 |
| Johnston | V. R. | Greenbushes | Dodge | GR ● 10 | Greenbushes Road Board | 1924-25 |
| Johnston | V. R. | Greenbushes | Dodge | GR ● 10 | Greenbushes Road Board | 1925-26 |
| Johnston | V. R. | Greenbushes | Dodge | GR ● 10 | Greenbushes Road Board | 1926-27 |
| Johnston | V. R. | Greenbushes | Dodge | GR ● 10 | Greenbushes Road Board | 1927-28 |
| Johnston | Vera H. | Leschenault | Chevrolet | BB ● 5 | Bunbury Road Board | 1924-25 |
| Johnston | Victor R. | South Greenbushes | Dodge | GR ● 10 | Greenbushes Road Board | 1922-23 |
| Johnston | Victor R. | South Greenbushes | Dodge | GR ● 10 | Greenbushes Road Board | 1923-24 |
| Johnston | W. | Harvey | Ford | H ● 146 | Harvey Road Board | 1927-28 |
| Johnston | W. B. | Palgarrup | Whippet | WA ● 200 | Manjimup Road Board | 1927-28 |
| Johnston | W. H. | Collie | Ford | CO ● 32 | Collie Road Board | 1925-26 |
| Johnston | WM. | Manjimup | Dodge | WA ● 5 | Manjimup Road Board | 1926-27 |
| Johnston | Wm. | Manjimup | Dodge | WA ● 5 | Manjimup Road Board | 1927-28 |
| Johnston & Ciblett | - | Manjimup | International Truck | WA ● 49 | Manjimup Road Board | 1926-27 |
| Johnston & Co | - | 6 Mackie Street, Victoria Park | Republic Wagon | 3644 | Metro Hire or Trade | 1924-25 |
| Johnston & Co | - | 6 Mackie Street, Victoria Park | Republic Wagon | 3644 | Metro Hire or Trade | 1926-27 |
| Johnston & Co | A. | Albany | Chevrolet | A 92 | Municipality of Albany | 1925-26 |
| Johnston & Co | A. | Albany | Chevrolet | A 92 | Municipality of Albany | 1926-27 |
| Johnston & Giblett | - | Manjimup | International Truck | WA ● 49 | Manjimup Road Board | 1927-28 |
| Johnstone | A. B. | 547 Fitzgerald Street | Wall 1 H.P. | P 185 | Perth Municipality | 1915 |
| Johnstone | A. B. | 545 Fitzgerald Street | Auto Wheel | P 183 | Perth Municipality | 1916 |
| Johnstone | A. B. | - | Humberette | P ● 50 | Perth Road Board | 1919 |
