| McKinley | V. G. | Ravensthorpe | Chevrolet | PR ● 30 | Phillips River Road Board | 1927-28 |
| MCKinley-Wood | W. | c/r Woods Motor Works Victoria Park | Chand. | 5150 | Metro Private Car | 1924-25 |
| McKinna Bros | - | Mangaroon Station | Buick | GU ● 12 | Upper Gascoyne Road Board | 1925-26 |
| McKinna Bros | - | Mangareen Station | Ford | GU ● 45 | Upper Gascoyne Road Board | 1925-26 |
| McKinna Bros | - | Mangaroon Station | Buick | GU ● 12 | Upper Gascoyne Road Board | 1926-27 |
| McKinnon | - | Augusta | Chevrolet | AU ● 76 | Augusta Road Board | 1927-28 |
| McKinnon | A. | Marble Bar | Ford Wagon | MB ● 4 | Marble Bar Road Board | 1925-26 |
| McKinnon | D. | Bunbury | Hupmobile | By 60 | Bunbury Municipality | 1922-23 |
| McKinnon | D. | Bunbury | Hupmobile | BY 60 | Bunbury Municipality | 1923 - 1924 |
| Mckinnon | Mrs | - | Ford | NA ● 23 | Nungarin Road Board | 1924-25 |
| McKinnon | Mrs | - | Ford | NA ● 23 | Nungarin Road Board | 1927-28 |
| McKinnon | W. N. | Dowerin | Gray | D ● 76 | Dowerin Road Board | 1924-25 |
| McKinnon | W. N. | Dowerin | Gray | D ● 76 | Dowerin Road Board | 1925-26 |
| McKinnon | W. N. | Dowerin | Gray | D ● 76 | Dowerin Road Board | 1926-27 |
| McKinnon | W. N. | Dowerin | Oldsmobile | D ● 76 | Dowerin Road Board | 1927-28 |
| McKintosh | A. J. | 80 Monmouth Street, North Perth | Ford | 5809 | Metro Private Car | 1924-25 |
| McKittrick | G. A | Nannup | Chevrolet | BL ● 44 | Nannup Road Board | 1926-27 |
| Mcknight | H. A. | Wagin | Ford | WN 51 | Wagin Municipality | 1926-27 |
| McKnight | H. A. | Wagin | Ford | WN 51 | Wagin Municipality | 1927-28 |
| McKnow | W. A. | Karalee | Ford | YL ● 32 | Yilgarn Road Board | 1926-27 |
| McKormack | - | 2 Mann Street, Cottesloe | Overland | 9243 | Metro Private Car | 1926-27 |
| McKower McBeath & Co | - | William Street | Dodge | 13880 | Metro Private Car | 1926-27 |
| McKumon | A. | Marble Bar | Ford Truck | MB ● 35 | Marble Bar Road Board | 1926-27 |
| McLachlan | A. | 10 Roy Street, Mount Lawley | Chevrolet | 5639 | Metro Private Car | 1924-25 |
| McLachlan | D. | Redcliffe Park Belmont | Oldsmobile | 3354 | Metro Private Car | 1924-25 |
| McLachlan | D. | Redcliffe Belmont | Chevrolet | 6722 | Metro Private Car | 1924-25 |
| McLachlan | D. | Redcliffe Park Belmont | Oldsmobile | 3354 | Metro Hire or Trade | 1925-26 |
| McLachlan | D. | Redcliffe Belmont | Ford | 6722 | Metro Private Car | 1925-26 |
| McLachlan | D. | Redcliffe Belmont | Ford | 6722 | Metro Private Car | 1926-27 |
| McLachlan | D. | Redcliffe Belmont | Ford | 6722 | Metro Private Car | 1927-28 |
| McLachlan | H. | 5 North Street, Midland Junction | Chevrolet | 5220 | Metro Private Car | 1926-27 |
| McLachlan | H. | 5 North Street, Midland Junction | Chevrolet | 5220 | Metro Private Car | 1927-28 |
| McLachlan | R. C. | Talbot | Overland | Y ● 157 | York Road Board | 1927-28 |
| McLachlan | William M. | Pemberton | Harley-Davidson Motorcycle | WA ● 21 | West Arthur Road Board | 1922-23 |
| McLaclen | A. A. | Croyden Road, Claremont | - | CL ● 88 | Claremont Road Board | 1919 |
| McLagan | E. | Moora | Chevrolet | M ● 97 | Moora Road Board | 1927-28 |
| Mclaren | - | 104 Carr Street, Perth | Essex | 641 | Metro Private Car | 1925-26 |
| McLaren | A. J. | 29 Kershaw Stree, Subiaco | Dodge | 4407 | Metro Private Car | 1923-24 |
| McLaren | A. J. | 29 Kershaw Street, Subiaco | Dodge | 4407 | Metro Private Car | 1924-25 |
| McLaren | C. F. | 104 Carr Street, West Perth | Essex | 641 | Metro Private Car | 1923-24 |
| McLaren | C. F. | 104 Carr Street, Perth | Essex | 641 | Metro Private Car | 1924-25 |
| McLaren | Charles | 104 Carr Street, Perth | Essex | 641 | Metro Private Car | 1926-27 |
| McLaren | Chas. F. | 42 Rockward Street, Mount Lawley | Essex | 641 | Metro Private Car | 1927-28 |
| McLaren | D. | Mossman's Bay, Cottesloe | Overland | 3255 | Metropolitan Hire and Trade Cars | 1923-24 |
| McLaren | D. | St Leonard's Street, Cottesloe Beach | Hupmobile | 3255 | Metro Private Car | 1924-25 |
| McLaren | H. G. | Quairading | Ford Truck | Q ● 228 | Quairading Road Board | 1926-27 |
| Mclaren | H. G. | Quairading | Ford Truck | Q ● 228 | Quairading Road Board | 1927-28 |
| McLaren | Lily | - | Chevrolet | YL ● 88 | Yilgarn Road Board | 1927-28 |
| McLarty | - | Pinjarra | Fiat | MY ● 60 | Murray Road Board | 1925-26 |
| McLarty | - | Pinjarra | Fiat | MY ● 60 | Murray Road Board | 1926-27 |
