| Mather | J. | Doodlakine | Maxwell | KE ● 145 | Kellerberrin Road Board | 1927-28 |
| Mather | P. J. | Doodlakine | Chevrolet Truck | KE ● 238 | Kellerberrin Road Board | 1926-27 |
| Mather | P. J. | Doodlakine | Chevrolet Truck | KE ● 238 | Kellerberrin Road Board | 1927-28 |
| Matheson | R. S. | - | Studebaker 25 H.P. | KMC 33 | Kalgoorlie Municipality | 1915 |
| Matheson | R. S. M. | 46 Addis Street | Studebaker 20 H.P. | KMC 33 | Kalgoorlie Municipality | 1916 |
| Matheson | R. S. M. | 46 Addis Street | Studebaker 20 H.P. | KMC 33 | Kalgoorlie Municipal Council | 1917-18 |
| Matheson | R. S. M. | 46 Addis Street | Studebaker 20 H.P. | KMC 33 | Kalgoorlie Municipality | 1919 |
| Matheson | R. S. M. | 46 Addis Street | Studebaker 20 H.P. | KMC 33 | Kalgoorlie Municipal Council | 1922-23 |
| Matheson | R. S. M. | 46 Addis Street | Studebaker | KMC ● 33 | Kalgoorlie Municipality | 1923-24 |
| Matheson | R. S. M. | 46 Addis Street | Studebaker | KMC 33 | Kalgoorlie Municipality | 1924-25 |
| Mathewdakes | T. A. | 113 Fitzgerald Street, Fremantle | Chevrolet | 11556 | Metro Private Car | 1926-27 |
| Mathews | W. J. | 192 Burt Street, Boulder | Studebaker | B 50 | Boulder Municipality | 1927-28 |
| Matson | J. | Albany | Studebaker 20 H.P. for Trade or Hire | A 40 | Albany Municipality | 1922-23 |
| Matson | J. | Kukerin | Rugby | DU ● 55 | Dumbleyung Road Board | 1924-25 |
| Matson | J. | Kukerin | Rugby | DU ● 55 | Dumbleyung Road Board | 1925-26 |
| Matson | J. | Kukerin | Rugby | DU ● 55 | Dumbleyung Road Board | 1926-27 |
| Matson | J. | Kukerin | Rugby | DU ● 55 | Dumbleyung Road Board | 1927-28 |
| Matson | W. | Dumbleyung | Studebaker | DU ● 122 | Dumbleyung Road Board | 1925-26 |
| Matson | W. | Dumbleyung | Studebaker | DU ● 122 | Dumbleyung Road Board | 1926-27 |
| Matson | W. | Dumbleyung | Studebaker | DU ● 122 | Dumbleyung Road Board | 1927-28 |
| Matt | C. | Dumbleyung | Studebaker | DU ● 56 | Dumbleyung Road Board | 1926-27 |
| Matthewdakis | T. A. | 113 Fitzgerald Terrace, Fremantle | Studebaker | 1745 | Metro Private Car | 1924-25 |
| Matthews | A. J. | Goomalling | Studebaker | GO ● 78 | Goomalling Road Board | 1924-25 |
| Matthews | C. | Wyalkatchem | Studebaker | WM ● 3 | Wyalkatchem Road Board | 1925-26 |
| Matthews | D. | Cunderdin | Ford | ME ● 77 | Meckering Road Board | 1924-25 |
| Matthews | D. | Cunderdin | Ford | ME ● 77 | Meckering Road Board | 1925-26 |
| Matthews | D. | Cunderdin | Ford | ME ● 77 | Meckering Road Board | 1926-27 |
| Matthews | D. | Cunderdin | Ford | ME ● 77 | Meckering Road Board | 1927-28 |
| Matthews | D. J. | Cunderdin | Ford | ME ● 77 | Meckering Road Board | 1923-24 |
| Matthews & Madew | - | Cunderdin | Dealers | ME ● 242 | Meckering Road Board | 1927-28 |
| Matthews & Tregear | - | East Wickepin | Dodge | WK ● 168 | Wickepin Road Board | 1926-27 |
| Matthews & Tregear | - | East Wickepin | Dodge | WK ● 168 | Wickepin Road Board | 1927-28 |
| Mattiske | A. | Beverley | Ford | BE ● 179 | Beverley Road Board | 1926-27 |
| Mattiske | A. G. | - | Ford | BE ● 179 | Beverley Road Board | 1924-25 |
| Mattiske | L. A. | Beverley | Ford | BE ● 179 | Beverley Road Board | 1925-26 |
| May | Arthur. H. | 175 Duke Street, East Fremantle | Morris-Cowley | 12451 | Metro Private Car | 1927-28 |
| May | J. W. | Kellerberrin | Triumph 3½ H.P. Motorcycle | KE ● 13 | Kellerberrin Road Board | 1917-18 |
| May | J. W. | Kellerberrin | Buick | KE ● 193 | Kellerberrin Road Board | 1926-27 |
| May | S. G. | Doodlakine | Ford | KE ● 4 | Kellerberrin Road Board | 1925-26 |
| May | S. G. | Doodlakine | Ford | KE ● 4 | Kellerberrin Road Board | 1926-27 |
| May | S. G. | Doodlakine | Ford | KE ● 4 | Kellerberrin Road Board | 1927-28 |
| May | W. | Holyoake | Chevrolet | MY ● 1 | Murray Road Board | 1926-27 |
| May | W. | Holyoake | Chevrolet | MY ● 1 | Murray Road Board | 1927-28 |
| Mayberry | W. J. | Lake Brown via Nugarin | Dodge | 11382 | Metro Private Car | 1926-27 |
| Mayberry | W. J. | Nungarin | Studebaker | NA ● 163 | Nungarin Road Board | 1927-28 |
| Mayger | J. F. | West Swan | Studebaker | 4791 | Metro Private Car | 1926-27 |
| Mayger | J. F. | West Swan | Studebaker | SW ● 34 | Swan Road Board | 1927-28 |
| Maynard | F. | Doodenaning | Studebaker | Q ● 103 | Quairading Road Board | 1926-27 |
| Maynard | F. | Doodenanning | Studebaker | Q ● 103 | Quairading Road Board | 1927-28 |
| Maynard | F. L. | Durawah | Studebaker 20 H.P. | CU ● 5 | Upper Chapman Road Board | 1917-18 |
