| Magee | J. O. | Kulin | Ford | KU ● 28 | Kulin Road Board | 1927-28 |
| Magee | Jas | Northhampton | Essex | NR ● 88 | Northampton Road Board | 1924-25 |
| Maggs | A. D. | 225 Beaufort Street, Perth | Overland | 9924 | Metro Private Car | 1926-27 |
| Maggs | A. D. | 225 Beaufort Street, Perth | Overland | 9924 | Metro Private Car | 1927-28 |
| Maggs | Mrs E. | 65 Lindsay Street, Perth | Ford | 4870 | Metro Private Car | 1923-24 |
| Maggs | Mrs E. | 65 Lindsay Street, Perth | Ford | 4870 | Metro Private Car | 1924-25 |
| Maggs | W. | Mukinbudin | Chevrolet Truck | NA ● 42 | Nungarin Road Board | 1925-26 |
| Magher | W. J. | Kwolyin | Ford Truck | BK ● 224 | Bruce Rock Road Board | 1927-28 |
| Magnetic Observatory | - | Watheroo | Citroen | M ● 37 | Moora Road Board | 1924-25 |
| Magnetic Observatory | - | Watheroo | Citroen | M ● 37 | Moora Road Board | 1925-26 |
| Magnetic Observatory | - | Watheroo | Citroen | M ● 37 | Moora Road Board | 1926-27 |
| Magnetic Observatory | - | Watheroo | Citroen | M ● 37 | Moora Road Board | 1927-28 |
| Magnus | A. M. | 774 Beaufort Street, Perth | Essex | 6838 | Metro Private Car | 1926-27 |
| Magnus | A. N. | Seventh Avenue, Maylands | Citroen | 6838 | Metro Private Car | 1925-26 |
| Magrath | A. J. | Kojonup | F.N. 2¾ H.P. Motorcycle | KpRB 1 | Kojonup Road Board | 1915 |
| Magrath | A. J. | Kojonup | 4½ H.P. Motorcycle | KO ● 1 | Kojonup Road Board | 1917-18 |
| Magrath | R. A. | Kojonup | Ford 20 H.P. | KO 17 | Kojonup Road Board | 1919 |
| Maher | A. | 103 Davis Street, Boulder | Willy's-Knight | B 32 | Boulder Municipality | 1923-24 |
| Maher | A. | 103 Davis Street, Boulder | Willys-Knight | B 32 | Boulder Municipality | 1924-25 |
| Maher | A. | 103 Davis Street, Boulder | Willys-Knight | B 32 | Boulder Municipality | 1925-26 |
| Maher | Allen | 6 Glenroyd Street, Mount Lawley | Willys-Knight | 13375 | Metro Private Car | 1927-28 |
| Maher | H. | 81 Lake Street, Perth | Morris-Oxford | 4660 | Metro Private Car | 1924-25 |
| Maher | H. | 81 Lake Street, Perth | Morris Oxford | 4660 | Metro Private Car | 1925-26 |
| Maher | H. | 81 Lake Street, Perth | Morris Oxford | 4660 | Metro Private Car | 1926-27 |
| Maher | H. | 81 Lake Street, Perth | Morris Oxford | 4660 | Metro Private Car | 1927-28 |
| Maher | Herbert | 85 Lake Street, Perth | Morris Oxford | 4660 | Metro Private Car | 1923-24 |
| Maher | J. | 34 Blencowe Street | Ford 20 H.P. | P 1189 | Perth Municipality | 1919 |
| Maher | J. | 919a Hay Street, Perth | Ford | 2280 | Metro Private Car | 1922-23 |
| Maher | J. | Karragullen | Chevrolet Wagon | 6647 | Metro Private Car | 1924-25 |
| Maher | J. | Karragullen | Chevrolet Wagon | 6647 | Metro Private Car | 1925-26 |
| Maher | J. | Perth | Overland | 2280 | Metro Private Car | 1926-27 |
| Maher | Jas. | 919a Hay Street, Perth | Overland | 2280 | Metro Private Car | 1923-24 |
| Maher | Jas. | 919 Hay Street, Perth | Overland | 2280 | Metro Private Car | 1924-25 |
| Maher | Jas. | 989 Hay Street, Perth | Ford | 2280 | Metro Private Car | 1925-26 |
| Maher | John | Karragullen | Chevrolet Wagon | 89 | Metro Private Car | 1926-27 |
| Maher | John | Karragullen | Chevrolet Wagon | 89 | Metro Private Car | 1926-27 |
| Maher | John | Karragullen | Chevrolet Wagon | 14753 | Metro Private Car | 1927-28 |
| Maher | M. | Nangeenan | Rugby | MD ● 261 | Merredin Road Board | 1927-28 |
| Maher | M. | Marble Bar | Dodge | MB ● 25 | Marble Bar Road Board | 1927-28 |
| Maher | P. | - | - | CB 33 | Cottesloe Beach Road Board | 1915 |
| Maher | W. | Scott Street, South Fremantle | Overland | 8937 | Metro Private Car | 1925-26 |
| Maher | W. | Stoke Street, Beaconsfield | Citroen | 12118 | Metro Private Car | 1926-27 |
| Maher | W. E. | Narrogin | Cycle and Sidecar 4½ H.P. Motorcycle | NGN 4 | Narrogin Municipality | 1919 |
| Maher | W. E. | Wokalup | Austin | H ● 221 | Harvey Road Board | 1927-28 |
| Maher | Willaim | Wickepin | Ford Truck | WK ● 125 | Wickepin Road Board | 1926-27 |
| Maher | William | Wickepin | Ford Truck | WK ● 125 | Wickepin Road Board | 1925-26 |
| Maher | William | Wickepin | Ford Truck | WK ● 125 | Wickepin Road Board | 1927-28 |
| Mahisteadt | F. | Wagin | Utility Truck | WN 62 | Wagin Municipality | 1926-27 |
| Mahlberg | A. | Capel | Ford | CP ● 25 | Capel Road Board | 1927-28 |
| Mahlberg | A. | Boyanup | Studebaker | CP ● 96 | Capel Road Board | 1927-28 |
