| Musgroves Ltd | - | Murray Street, Perth | Essex | 12704 | Metro Private Car | 1927-28 |
| Musgroves Ltd | - | Murray Street, Perth | Ford Van | 466 | Metro Private Car | 1927-28 |
| Musgroves Ltd | - | Murray Street, Perth | Chevrolet | 746 | Metro Private Car | 1927-28 |
| Musgroves Ltd | - | Murray Street, Perth | Ford Van | 11994 | Metro Private Car | 1927-28 |
| Musk | Catherine | 56 Forrest Street, North Perth | Studebaker | 5039 | Metro Private Car | 1927-28 |
| Musk | Jno. | Cleveland, Gingin | Ford | GG 1 | Gingin Road Board | 1915 |
| Musk | Jno. | Cleveland, Gingin | Ford 20 H.P. | CG 1 | Gingin Road Board | 1916 |
| Musk | Jno. | Cleveland, Gingin | Ford 20 H.P. | GG ● 1 | Gingin Road Board | 1917-18 |
| Musk | Jno. | Cleveland, Gingin | Ford 20 H.P. | GG ● 1 | Gingin Road Board | 1919 |
| Musk | John | Yalobia Station | Ford 20 H.P. | GM 2 | Gascoyne-Minilya Road Board | 1915 |
| Musk | John | Yalobia Station | Ford 20 H.P. | GM 2 | Gascoyne - Minilya Road Board | 1916 |
| Musk | John | Yalobia Station | Ford 20 H.P. | GM ● 2 | Gascoyne-Minilya Road Board | 1917-18 |
| Musk | Mrs | Gingin | Studebaker | GG ● 1 | Gingin Road Board | 1926-27 |
| Musk | Mrs C. | Gingin | Dodge | GG ● 1 | Gingin Road Board | 1924-25 |
| Musk | Mrs C. | Gingin | Rugby | GG ● 13 | Gingin Road Board | 1926-27 |
| Musk Estate | Late J. | Gingin | Dodge | GG ● 1 | Gingin Road Board | 1923-24 |
| Mutchins | B. G. | Donnybrook | Overland | PE ● 114 | Preston Road Board | 1926-27 |
| Mutter | A. R. | - | Dodge | N ● 141 | Northam Road Board | 1927-28 |
| Mutter | A. W. | - | Dodge | N ● 136 | Northam Road Board | 1927-28 |
| Mutter | F. O. | - | Ford | N ● 16 | Northam Road Board | 1927-28 |
| Mutter | F. O. | - | Dodge | N ● 127 | Northam Road Board | 1927-28 |
| Mutter | J. A. | Northam | Ford | N ● 133 | Northam Road Board | 1925-26 |
| Mutter | J. H. | Baandee | Chevrolet | MD ● 31 | Merredin Road Board | 1927-28 |
| Mutter | Wm. | Arrino | Studebaker | MI ● 150 | Mingenew Road Board | 1927-28 |
| Mutton | George | Thomas Street, Nedlands | Whippet | 119 | Metro Private Car | 1927-28 |
| Mutton | H. | Wickepin | Chevrolet | WK ● 255 | Wickepin Road Board | 1927-28 |
| Mutton | J. | Lawlers | Ford Truck | LA ● 19 | Lawlers Road Board | 1924-25 |
| Mutton | J. | Lawlers | Ford | LA ● 19 | Lawlers Road Board | 1925-26 |
| Mutton | J. | Lawlers | Ford | LA ● 19 | Lawlers Road Board | 1926-27 |
| Mutton | J. | Lawlers | Ford Truck | LA ● 19 | Lawlers Road Board | 1927-28 |
| Mutton | Mrs H. | 52 Hopkins Street | Chevrolet | B 72 | Boulder Municipality | 1926-27 |
| Mutual Life Association | - | Saint George's Terrace, Perth | Overland | 7982 | Metro Private Car | 1925-26 |
| Mutual Life Assurance | - | Saint George's Terrace, Perth | Ford | 6356 | Metro Private Car | 1926-27 |
| Mutual Manufacturing Co | - | 26 Queen Street, Perth | Dodge | 2234 | Metro Private Car | 1927-28 |
| Mutual Manufacturing Co | - | 26 Queens Street, Perth | Essex | 2592 | Metro Private Car | 1927-28 |
| Myales | G. | Balingup | Rugby | BN ● 52 | Balingup Road Board | 1927-28 |
| Myatt | H. H. M. | 55 Keightley Road, Subiaco | Dodge | 8503 | Metro Private Car | 1926-27 |
| Myatt | H. M. | 55 Keightley Road, Subiaco | Dodge | 8503 | Metro Private Car | 1927-28 |
| Mycock | J. M. | Kukerin | Reo Truck | DU ● 138 | Dumbleyung Road Board | 1926-27 |
| Mycock | J. M. | Kukerin | Reo Truck | DU ● 138 | Dumbleyung Road Board | 1927-28 |
| Myers | A. | 12 Ellen Street, Fremantle | Overland | 6658 | Metro Private Car | 1926-27 |
| Myers | A. | 12 Ellen Street, Fremantle | Overland | 6658 | Metro Private Car | 1927-28 |
| Myers | A. J. | Pakenham Street, Fremantle | Dort | 6140 | Metro Private Car | 1924-25 |
| Myers | A. T. | 39 Claremont Avenue, Claremont | Chevrolet | 5240 | Metro Private Car | 1927-28 |
| Myers | C. H. | South, Guildford | 3½ H.P. Motorcycle | SW ● 18 | Swan Road Board | 1917-18 |
| Myers | F. | Wubin | Ford | DL ● 88 | Dalwallinu Road Board | 1925-26 |
| Myers | F. | Wubin | Ford | DL ● 88 | Dalwallinu Road Board | 1926-27 |
| Myers | F. | Wubin | Standard | DL ● 45 | Dalwallinu Road Board | 1927-28 |
| Myers | F. | Wubin | Ford | DL ● 88 | Dalwallinu Road Board | 1927-28 |
| Myers | J. | Narrogin | Cadillac 30 H.P. | NGN 9 | Narrogin Municipality | 1915 |