| Michelides | P. | 108 Francis Street, Perth | Overland | 6244 | Metro Private Car | 1924-25 |
| Michelides | P. | 108 Francis Street, Perth | Overland | 6244 | Metro Private Car | 1925-26 |
| Michelides | P. | 108 Francis Street, Perth | Chevrolet | 14100 | Metro Private Car | 1926-27 |
| Michelides | P. | 108 Francis Street, Perth | Overland | 6244 | Metro Private Car | 1926-27 |
| Michelides | P. | 108 Francis Street, Perth | Chevrolet | 14100 | Metro Private Car | 1927-28 |
| Michelides | Peter | 108 Francis Street, Perth | Overland | 1469 | Metro Private Car | 1923-24 |
| Michelides | Peter | 108 Francis Street, Perth | Overland | 6244 | Metro Private Car | 1927-28 |
| Michelides Ltd | - | William Street, Perth | Citroen | 2867 | Metro Private Car | 1923-24 |
| Michelides Ltd | - | Roe Street, Perth | Citroen | 4527 | Metro Private Car | 1924-25 |
| Michelides Ltd | - | Roe Street, Perth | Citroen | 4527 | Metro Private Car | 1925-26 |
| Michelides Ltd | - | Roe Street, Perth | Chevrolet | 9038 | Metro Private Car | 1926-27 |
| Michelides Ltd | - | Roe Street, Perth | Chevrolet | 9038 | Metro Private Car | 1927-28 |
| Michelldes Ltd | - | Roe Street, Perth | Chevrolet | 9038 | Metro Private Car | 1925-26 |
| Michellides | P. | 108 Francis Street, Perth | Ford | 1469 | Metro Private Car | 1922-23 |
| Michilides Ltd | - | Roo Street, Perth | Fiat | 7677 | Metro Private Car | 1926-27 |
| Michillides, Ltd | - | Roe Street, Perth | Fiat | 7677 | Metro Private Car | 1927-28 |
| Michin Bros | - | Beverley | Ford | BE ● 295 | Beverley Road Board | 1927-28 |
| Middlemas | R. D. | Queen Street, Perth | Chevrolet | 14448 | Metro Private Car | 1927-28 |
| Middlemas | R. W. | 35 Loch Street, Claremont | Ford | 1845 | Metro Private Car | 1924-25 |
| Middlemas & Co | - | 26 Queen Street, Perth | Overland | 7681 | Metro Private Car | 1925-26 |
| Middlemas & Co | - | 26 Queen Street, Perth | Overland | 7681 | Metro Private Car | 1926-27 |
| Middlemas & Co | - | 26 Queen Street, Perth | Overland | 7681 | Metro Private Car | 1927-28 |
| Middlemass | R. W. | 35 Loch Street, Claremont | Ford | 1845 | Metro Private Car | 1925-26 |
| Middlemass | R. W. | 35 Loch Street, Claremont | Ford | 1845 | Metro Private Car | 1926-27 |
| Middletin Main Road Board | J.D. | - | Dodge | BY ● 37 | Bunbury Road Board | 1927-28 |
| Middleton | - | Jarrahdale | Ford Truck | SJ ● 81 | Serpentine-Jarrahdale Road Board | 1926-27 |
| Middleton | - | Jarrahdale | Ford Truck | SJ ● 81 | Serpentine-Jarrahdale Road Board | 1927-28 |
| Middleton | - | Serpentine | Ford | SJ ● 111 | Serpentine-Jarrahdale Road Board | 1927-28 |
| Middleton | A. | Balingup | Oldsmobile | BN ● 51 | Balingup Road Board | 1927-28 |
| Middleton | A. L. | 6 Mill Street, Perth | Buick | 1667 | Metro Private Car | 1927-28 |
| Middleton | A. W. | North Dandalup | Ford Truck | MY ● 93 | Murray Road Board | 1925-26 |
| Middleton | A. W. | North Dandalup | Ford Truck | MY ● 93 | Murray Road Board | 1926-27 |
| Middleton | Edward | Jarrahdale | Excelsior | SJ ● 5 | Serpentine-Jarrahdale Road Board | 1922-23 |
| Middleton | George | Kojonup | Overland | KO ● 38 | Kojonup Road Board | 1927-28 |
| Middleton | O. H. | Mill Street, Perth | Dodge | 8401 | Metro Private Car | 1925-26 |
| Middleton | O. H. | 6 Mill Street, Perth | Austin | 704 | Metro Private Car | 1926-27 |
| Middleton | O. H. | C/o Vacuum Oil Co.Perth | Dodge | 704 | Metro Private Car | 1927-28 |
| Middleton & Sons | N. | Kulin | Ford Truck | KU ● 94 | Kulin Road Board | 1927-28 |
| Middlewich | S. | 201 Murray Street, Perth | Citroen | 7554 | Metro Private Car | 1925-26 |
| Middlewick | Mrs E. | Cnr. Glenroyd & Walcott Street, Perth | Austin | 13083 | Metro Private Car | 1926-27 |
| Middlewick | S. | 201 Murray Street, Perth | Citroen | 7554 | Metro Private Car | 1926-27 |
| Middlewick | S. | 201 Murray Street, Perth | Citroen | 7554 | Metro Private Car | 1927-28 |
| Midland Junction & Districts | - | - | Ford Ambulance | 1594 | Metro Private Car | 1927-28 |
| Midland Junction District | - | - | Ford | 1594 | Metro Private Car | 1926-27 |
| Midwinter | C. | Commonwealth Hotel, Geraldton | Nash | GN 127 | Geraldton Municipality | 1927-28 |
| Miers | Jno. | 68 High Street, Fremantle | Ford | 1845 | Metro Private Car | 1923-24 |
| Miers | John G. | 68 High Street, Fremantle | Ford | 1844 | Metro Private Car | 1922-23 |
| Mighall | E. | Koorda | Ford | WM ● 105 | Wyalkatchem Road Board | 1925-26 |
| Mighall | E. | Koorda | Ford | WM ● 105 | Wyalkatchem Road Board | 1926-27 |
| Mighall | E. A. | Koorda | Ford | WM ● 105 | Wyalkatchem Road Board | 1924-25 |