| McLeod | Geo. | Katanning | E.M.F. | KA ● 90 | Katanning Road Board | 1923-24 |
| McLeod | George A. | Napoleon Street | Overland Lorry 18 H.P. | Ce ● 47 | Cuballing Road Board | 1917-18 |
| McLeod | George A. | Napoleon Street | Overland Lorry 18 H.P. | Ce 47 | Municipality of Cottesloe | 1919 |
| McLeod | Grace | 24 Colin Street, West Perth | Dodge | 9697 | Metro Private Car | 1926-27 |
| McLeod | H. | Francis Street, Geraldton | Itala | GN 177 | Geraldton Municipality | 1927-28 |
| McLeod | J. F. | Minilya | Buick | GM ● 43 | Gascoyne-Minilya Road Board | 1924-25 |
| McLeod | J. P. | Baandee | Chevrolet Truck | KE ● 334 | Kellerberrin Road Board | 1927-28 |
| McLeod | Mrs E. | Fortescue Street, East Fremantle | Singer | 11551 | Metro Private Car | 1926-27 |
| McLeod | T. | 112 Waugh Street, North Perth | Nash | 7869 | Metro Private Car | 1927-28 |
| McLeod & Co | D. J. | VIctoria Street, for Blind Maylands | Chevrolet | 6150 | Metro Private Car | 1926-27 |
| McLerie | A. J. | Mount Magnet | Ford 18 H.P. | MAMC 14 | Mount Magnet Municipality | 1916 |
| McLerie & Fenn | - | Mount Magnet | Dodge 24 H.P. | MAMC ● 14 | Mount Magnet Municipality | 1917-18 |
| McLernon | B. | Laverton | Dodge | MG ● 21 | Mount Margaret Road Board | 1927-28 |
| McLevie | R. G. | Dalwallinu | Ford | DL ● 72 | Dalwallinu Road Board | 1924-25 |
| McLevie | R. G. | Dalwallinu | Ford | DL ● 72 | Dalwallinu Road Board | 1925-26 |
| McLevie | R. G. | Dalwallinu | Ford | DL ● 72 | Dalwallinu Road Board | 1926-27 |
| McLevie | R. G. | Dalwallinu | Ford | DL ● 72 | Dalwallinu Road Board | 1927-28 |
| McLintock | W. C. S. | Katanning | Ford 20 H.P. | KA 51 | Katanning Road Board | 1916 |
| Mclintosh | A. | Albany Road, Cannington | Studebaker | 7657 | Metro Private Car | 1926-27 |
| McLiver | G. A. | Napoleon Street, Cottesloe | Chevrolet | 15948 | Metro Private Car | 1927-28 |
| McLoughlan | Henry | Corrigin | Oldsmobile | CR ● 132 | Corrigin Road Board | 1927-28 |
| McLoughlan | J. A. | Northampton | Chevrolet | NR ● 28 | Northampton Road Board | 1924-25 |
| McLoughlan | William | Kunjin | Oldsmobile | CR ● 64 | Corrigin Road Board | 1927-28 |
| McLoughlin | A. B. | Narrogin | Rover 3½ H.P. Motorcycle | NGN 5 | Narrogin Municipality | 1919 |
| McLoughlin | J. | Northampton | Chevrolet | NR ● 28 | Northampton Road Board | 1925-26 |
| McLoughlin | J. | Meekatharra | Ford Wagon | MK ● 4 | Meekatharra Road Board | 1925-26 |
| McLoughlin | J. | Meekatharra | Reo Truck | MK ● 4 | Meekatharra Road Board | 1926-27 |
| McLoughlin | J. | Northampton | Chevrolet | NR ● 28 | Northampton Road Board | 1926-27 |
| McLoughlin | J. A. | Northampton | Ford | NR ● 6 | Northampton Road Board | 1922-23 |
| McLoughlin | J. A. | Northampton | Overland | NR ● 28 | Northampton Road Board | 1923-24 |
| McLoughlin | J. A. | Northampton | Essex | NR ● 153 | Northampton Road Board | 1927-28 |
| Mclyneux Bros | - | Mukinbudin | Moon | NA ● 43 | Nungarin Road Board | 1924-25 |
| McMahon | Albert E. | 35 Clarence Street, Mount Lawley | Morris Cowley | 12813 | Metro Private Car | 1927-28 |
| McMahon | F. | 40 Queen Victoria Street, Fremantle | Rugby Wagon | 15904 | Metro Private Car | 1927-28 |
| McMahon | H. B. | Bruce Rock | Ford | BK ● 117 | Bruce Rock Road Board | 1924-25 |
| McMahon | J. | Coolup | Durrant | MY ● 142 | Murray Road Board | 1926-27 |
| McMahon | J. | Coolup | Durrant | MY ● 142 | Murray Road Board | 1927-28 |
| McMahon | J. P. | 17 Antrim Street, Leederville | Ford | 14527 | Metro Private Car | 1927-28 |
| McMahon | Mrs A. | 240 Newcastle Street, Perth | Chevrolet | 12778 | Metro Private Car | 1927-28 |
| McMahon | P. T. | Southern Cross | Ford | YL ● 6 | Yilgarn Road Board | 1924-25 |
| McMahon | P. T. | Southern Cross | Ford | YL ● 28 | Yilgarn Road Board | 1924-25 |
| McMahon | P. T. | Southern Cross | Ford | YL ● 28 | Yilgarn Road Board | 1925-26 |
| McMahon | P. T. | Southern Cross | Chevrolet | YL ● 28 | Yilgarn Road Board | 1926-27 |
| McMahon | Peter Thomas | Southern Cross | Ford | YL ● 28 | Yilgarn Road Board | 1923-24 |
| McMahon | Thos. | 8 New Bond Street, Midland Junction | Ford | 6937 | Metro Private Car | 1927-28 |
| McMahon & Fynmore | - | 1199 Hay Street | Studebaker | 13820 | Metro Private Car | 1926-27 |
| McManns | C. | 20 Hooper Street, West Perth | Dodge 20 H.P. | P 433 | Perth Municipality | 1917-18 |
| McManus | - | Southern Brook | Buick | N ● 101 | Northam Road Board | 1924-25 |
| McManus | - | Southern Brook | Buick | N ● 101 | Northam Road Board | 1925-26 |
| McManus | A. | 49 Havelock Street, West Perth | Studebaker | 8492 | Metro Private Car | 1925-26 |
