| Maben | W. | Southern Cross | Ford | YL ● 38 | Yilgarn Road Board | 1926-27 |
| Maber | A. | 6 Glenroyd Street, Mount Lawley | Willys-Knight | 13375 | Metro Private Car | 1926-27 |
| Mabeth | D. N. | C/o Zimpels Ltd. Hay Street, Perth | Studebaker | 14091 | Metro Private Car | 1927-28 |
| Mableson | F. | Traying | Essex | NG ● 13 | Ninghan Road Board | 1923-24 |
| Mableson | F. | Trayning | Essex | KTY ● 13 | Kununoppin-Trayning Road Board | 1924-25 |
| Mableson | F. | Trayning | Fiat | KTY ● 83 | Kununoppin-Trayning Road Board | 1925-26 |
| Mableson | F. | Trayning | Fiat | KTY ● 83 | Kununoppin-Trayning Road Board | 1926-27 |
| Mableson | F. | Trayning | Fiat | KTY ● 83 | Kununoppin-Trayning Road Board | 1927-28 |
| Mableson | H. H. | Trayning | Essex | KTY ● 13 | Kununoppin-Trayning Road Board | 1925-26 |
| Mableson | H. H. | Doodlakine | Essex | MD ● 35 | Merredin Road Board | 1927-28 |
| Mableson Bros | - | Trayning | Republic Truck | KTY ● 78 | Kununoppin-Trayning Road Board | 1925-26 |
| Macansh Estate Ltd | - | Anna Plains Station | Ford | BM ● 2 | Broome Road Board | 1925-26 |
| Macara | W. S. | 202 Lord Street, Perth | Ford | 11729 | Metro Private Car | 1926-27 |
| Macaroni | A. | 24 Rushton Street, Victoria Park | Republic Wagon | 10108 | Metro Hire or Trade | 1927-28 |
| MaCarthy | G. V. P. | Armadale | Rugby | A-K ● 26 | Armadale-Kelmscott Road Board | 1926-27 |
| MaCarthy | G. V. P. | Armadale | Rugby | A-K ● 26 | Armadale-Kelmscott Road Board | 1927-28 |
| Macartney | E. H. B. | - | Ford | CD ● 20 | Cue-Day Dawn Road Board | 1926-27 |
| Macartney | E. H. B. | Cue | Ford | CD ● 20 | Cue-Day Dawn Road Board | 1927-28 |
| Macaulay | H. | Dwellingup | Ford Truck | MY ● 171 | Murray Road Board | 1926-27 |
| Macaulay | N. | Holyoake | Ford Truck | MY ● 171 | Murray Road Board | 1927-28 |
| Macaulay | T. | No. 2 State Mill Dwellingup | Chevrolet | MY ● 156 | Murray Road Board | 1926-27 |
| Macaulay | W. | Government Road, Mount Pleasant | Ford | 7735 | Metro Private Car | 1925-26 |
| Macaulay | W. | Government Road, Mount Pleasant | Ford | 7735 | Metro Private Car | 1926-27 |
| Macauley & Gailliard | - | Kellerberrin | Chevrolet Truck | KE ● 302 | Kellerberrin Road Board | 1926-27 |
| Macauley & Gailliard | - | Kellerberrin | Chevrolet Truck | KE ● 302 | Kellerberrin Road Board | 1927-28 |
| MacBride | Rev | Toodyay | Chevrolet | T ● 36 | Toodyay Road Board | 1922-23 |
| MacCallum | A. | 96 Murray Street, Perth | Talbot | 1168 | Metro Private Car | 1922-23 |
| MacComack | A. | Jarrahdale | Ford | SJ ● 91 | Serpentine-Jarrahdale Road Board | 1926-27 |
| MacCorley | Mrs L. J. | 16 Woolwich Street, Leederville | Chevrolet | 5512 | Metro Private Car | 1927-28 |
| MacCormack | A. | Serpentine | Ford | SJ ● 91 | Serpentine-Jarrahdale Road Board | 1927-28 |
| MacDonald | Allen J. | M.D. | Ford | MD ● 250 | Merredin Road Board | 1926-27 |
| Macdonald | E. A. | Hindmarsh | Hudson | D ● 80 | Dowerin Road Board | 1924-25 |
| Macdonald | E. G. | 65 Saint George's Terrace, Perth | Rugby | 1392 | Metro Private Car | 1927-28 |
| MacDonald | I. O. | Quairading | Citroen | Q ● 139 | Quairading Road Board | 1925-26 |
| MacDonald | J. | Hotel Esplanade | Hupmobile 16 H.P. | P 347 | Perth Municipality | 1915 |
| Macdonald | J. J. | Quairading | Ford 20 H.P. | AV ● - | Avon Road Board | 1917-18 |
| MacDonald | J. J. | Quairading | Dodge | Q ● 3 | Quairading Road Board | 1922-23 |
| Macdonald | J. J. | Quairading | Dodge | Q ● 3 | Quairading Road Board | 1923-24 |
| MacDonald | J. J. | Quairading | Dodge | Q ● 3 | Quairading Road Board | 1924-25 |
| MacDonald | J. J. | Quairading | Dodge | Q ● 3 | Quairading Road Board | 1925-26 |
| MacDonald | J. J. | Quairading | Dodge | Q ● 3 | Quairading Road Board | 1926-27 |
| MacDonald | J. J. | Quairading | Dodge | Q ● 9 | Quairading Road Board | 1926-27 |
| Macdonald | J. J. | Quairading | Dodge | Q ● 3 | Quairading Road Board | 1927-28 |
| Macdonald | J. J. | Quairading | Dodge | Q ● 9 | Quairading Road Board | 1927-28 |
| MacDonald | J. T. | Mullewa | Ford Lorry | MW ● 28 | Mullewa Road Board | 1924-25 |
| MacDonald | J. T. | 269 William Street, Perth | Rugby | 9348 | Metro Private Car | 1926-27 |
| MacDonald | J. T. | 269 William Street, Perth | Rugby | 9348 | Metro Private Car | 1927-28 |
| MacDonald | James J. | Quairading | Dodge | Q ● 9 | Quairading Road Board | 1924-25 |
| Macdonald | R. | Bunbury | Hupmobile 20 H.P. | By 10 | Bunbury Municipality | 1915 |
| MacDonald | R. J. | Allanson | Chevrolet | CO ● 151 | Collie Road Board | 1927-28 |
