| Meyer & Orr | - | Barrack Street, Perth | Ford Wagon | 4664 | Metro Private Car | 1926-27 |
| Meyer & Orr | - | 148 Barrack Street, Perth | Ford Wagon | 4664 | Metro Private Car | 1927-28 |
| Meyer and Orr | - | 120 Barrack Street, Perth | Ford Wagon | 698 | Metro Private Car | 1923-24 |
| Meyer and Orr | - | 120 Barrack Street, Perth | Ford Wagon | 4664 | Metro Private Car | 1923-24 |
| Meyers | F. C. | 161 Basham Street, Perth | Chrysler | 9486 | Metro Private Car | 1926-27 |
| Meyers | F. C. | 753 Beaufort Street, Mount Lawley | Chrysler | 9486 | Metro Private Car | 1927-28 |
| Meyers | H. | 191 Beaufort Street | B.S.A. 3½ H.P. Motorcycle | P 121 | Perth Municipality | 1915 |
| Meyers | R. | Northampton | Ford 15 H.P. | N 15 | Northampton Road Board | 1915 |
| Meyers | R. K. | Bunbury | Overland | BY 140 | Bunbury Municipality | 1926-27 |
| Meyers | R. W. | Northampton | Ford 15 H.P. | N 6 | Northampton Road Board | 1915 |
| Meyers | R. W. | Northampton | Ford 15 H.P. | NR 6 | Northampton Road Board | 1916 |
| Meyers & Orr | - | 907 Hay Street | B.S.A. 3½ H.P. Motorcycle | P 193 | Perth Municipality | 1915 |
| Meyers & Orr | - | 905 Hay Street | B.S.A. 3½ H.P. Motorcycle | P 193 | Perth Municipality | 1916 |
| Meyles | J. W. | Collie | Overland | CO ● 110 | Collie Road Board | 1926-27 |
| Meyn | R. C. | Nyabing | Overland | KT ● 3 | Kent Road Board | 1925-26 |
| Meyn | R. C. | Nyabing | Overland | KT ● 3 | Kent Road Board | 1926-27 |
| Meyn | R. C. | Nyabing | Overland | KT ● 51 | Kent Road Board | 1926-27 |
| Meyn | R. C. | Nyabing | Overland | KT ● 51 | Kent Road Board | 1927-28 |
| Meyne | R. C. | Nyabing | Overland | KT ● 3 | Kent Road Board | 1924-25 |
| Mia Mia Pastoral Co | - | Mia Mia | Ford | GM ● 38 | Gascoyne-Minilya Road Board | 1924-25 |
| Mia Mia Pastoral Co | - | Mia Mia | Ford | GM ● 38 | Gascoyne-Minilya Road Board | 1925-26 |
| Mia Mia Pastoral Co | - | Mia Mia | Ford | GM ● 38 | Goscoyne-Mililya Road Board | 1926-27 |
| Mia Mia Pastoral Co | - | Mia Mia | Ford | GM ● 38 | Gascoyne Minilya Road Board | 1927-28 |
| Mia Mia Pastoral Com. Ltd | - | Mia Mia | Ford | GM ● 38 | Gascoyne-Minilya Road Board | 1923-24 |
| Micale | C. | Bunbury | Ford | BY 155 | Bunbury Municipality | 1927-28 |
| Michael | H. G. | Cranbrook | Ford Truck | CB ● 54 | Cranbrook Road Board | 1927-28 |
| Michael | J. I. | Moora | Chevrolet | M ● 116 | Moora Road Board | 1927-28 |
| Michael | L. G. | Moora | Chevrolet | M ● 88 | Moora Road Board | 1927-28 |
| Michael | L. R. | Round Hill | Chevrolet Truck | M ● 166 | Moora Road Board | 1926-27 |
| Michael | L. R. | Round Hill | Chevrolet Truck | M ● 166 | Moora Road Board | 1927-28 |
| Michaels | M. | 18 View Street, North Perth | Essex | 9425 | Metro Private Car | 1927-28 |
| 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 |