| Arthur | M. N. | Quairading | Rugby | Q ● 272 | Quairading Road Board | 1927-28 |
| Arthur | M. N. | Wylie | Rugby | WM ● 20 | Wyalkatchem Road Board | 1927-28 |
| Arthur | N. | Chapman Road, Geraldton | Chevrolet | GN 213 | Geraldton Municipality | 1927-28 |
| Arthur | W. | Wubin | Oakland | DL ● 105 | Dalwallinu Road Board | 1925-26 |
| Arthur | W. | Wubin | Oakland | DL ● 105 | Dalwallinu Road Board | 1926-27 |
| Arthur | W. | 278 Charles Street, North Perth | Ford Wagon | 12653 | Metro Private Car | 1927-28 |
| Arthur | W. | Wubin | Studebaker | DL ● 165 | Dalwallinu Road Board | 1927-28 |
| Arthur | W. N. | 41 Marmion Street, North Perth | Rugby | 7405 | Metro Private Car | 1925-26 |
| Arthur Anderson & Co Ltd | - | 1056 Hay Street, Perth | Dealers | 20041 | Metro Dealers Car | 1925-26 |
| Arthur Anderson & Co Ltd | - | 1056 Hay Street, Perth | Dealers | 20041 | Metro Dealers Car | 1926-27 |
| Arthur Anderson & Co Ltd | - | 1056 Hay Street, Perth | Dealers | 20041 | Metro Dealers Car | 1927-28 |
| Arthur Anderson Ltd | - | 1056 Hay Street, Perth | Dealers | 2946 | Metro Dealers Car | 1923-24 |
| Arthur Anderson Ltd | - | 1056 Hay Street, Perth | Dealers | 2960 | Metro Dealers Car | 1923-24 |
| Arthur Anderson Ltd | - | 1056 Hay Street, Perth | Dealers | 2946 | Metro Metro Dealers Car | 1925-26 |
| Arthur Anderson Ltd | - | 1056 Hay Street, Perth | Dealers | 2960 | Metro Metro Dealers Car | 1925-26 |
| Arthur Anderson Ltd | - | 1056 Hay Street, Perth | Dealers | 20075 | Metro Dealers Car | 1925-26 |
| Arthur Anderson Ltd | - | 1056 Hay Street, Perth | Dealers | 2946 | Metro Dealers Car | 1926-27 |
| Arthur Anderson Ltd | - | Hay Street, Perth | Fiat | 5053 | Metro Private Car | 1927-28 |
| Arthur Bales & Co Ltd | - | 367 Murray Street, Perth | Dealers | 20035 | Metro Dealers Car | 1925-26 |
| Arthur Bales Ltd | - | Murray Street, Perth | Dealers | 20272 | Metro Dealers Car | 1927-28 |
| Arthurell | H. A. | Denmark | Graham Truck | DE ● 53 | Denmark Road Board | 1927-28 |
| Artlasher | Rev G. | Greenough | Ford | GH ● 10 | Greenough Road Board | 1925-26 |
| Artlasher | Rev. G. | Greenough | Ford | GH ● 10 | Greenough Road Board | 1926-27 |
| Artlasher | Rev. G. | Greenough | Ford | GH ● 10 | Greenough Road Board | 1927-28 |
| Arundale | J. R. | 11 Chelmsford Road, Mount Lawley | Maxwell | 8874 | Metro Private Car | 1927-28 |
| Arundall | J. R. | 11 Chelmsford Road, North Perth | Maxwell | 9143 | Metro Private Car | 1925-26 |
| Arundall | J. R. | 11 Chelmsford Road, North Perth | Maxwell | 9143 | Metro Private Car | 1926-27 |
| Arundel | C. R. | View Street, Cottesloe | Citroen | 5184 | Metro Private Car | 1924-25 |
| Arundel | E. W. | 28 Stanley Street, Mount Lawley | Chevrolet | 5457 | Metro Private Car | 1924-25 |
| Arundel | E. W. | 179 Murray Street, Perth | Fiat | 5457 | Metro Private Car | 1926-27 |
| Arundel | E. W. | 179 Murray Street, Perth | Fiat | 5457 | Metro Private Car | 1927-28 |
| Arundel | Miss E. | The Mansions Mounts Bay Rd. | Dodge | 6329 | Metro Private Car | 1924-25 |
| Arundel | Miss E. | The Mansions Mounts Bay Road | Dodge | 6329 | Metro Private Car | 1925-26 |
| Arundel | R. E. | View Street, Cottesloe | Citroen | 5184 | Metro Private Car | 1925-26 |
| Arundel | R. E. | Albion Hotel, Cottesloe | Morris-Cowley | 11149 | Metro Private Car | 1926-27 |
| Arundel | R. E. | Albion Hotel, Cottesloe | Morris-Cowley | 11149 | Metro Private Car | 1927-28 |
| Arundel | R. E. & J. T. | Harrismith | Ford Truck | KU ● 54 | Kulin Road Board | 1926-27 |
| Arundel | R. E. & J. T. | Harrismith | Ford Truck | KU ● 54 | Kulin Road Board | 1927-28 |
| Arundell | J. | Harrismith | Ford Truck | RE ● 89 | Roe Road Board | 1925-26 |
| Arundell | Rev. | Albany | Chevrolet | A 133 | Municipality of Albany | 1926-27 |
| Arundell | Rev. A. E. | Albany | Chevrolet | A 133 | Albany Municipality | 1927-28 |
| Asbestos Co | - | Burswood | Ford | 2363 | Metro Private Car | 1922-23 |
| Asbestos Slate & Sheet Co | - | Burswood | Ford | 3963 | Metro Private Car | 1924-25 |
| Asbestos Slate and Sheet Co | - | Burswood | Ford | 2363 | Metro Private Car | 1923-24 |
| Asbestos Slate Co | - | Rivervale | Chevrolet | 13564 | Metro Private Car | 1926-27 |
| Asbestos Slate Manufacturing Co | - | Riverdale | Dodge | 7231 | Metro Private Car | 1925-26 |
| Asbestos Slate Manufacturing Co | - | Rivervale | Dodge | 7231 | Metro Private Car | 1926-27 |
| Asbury | E. T. | Quairading | Chevrolet | Q ● 87 | Quairading Road Board | 1925-26 |
| Asbury | E. T. | Quairading | Ford Truck | Q ● 197 | Quairading Road Board | 1926-27 |
| Asbury | E. T. | Quairading | Chevrolet | Q ● 87 | Quairading Road Board | 1926-27 |
