| Lynch | S. E. | Kellerberrin | Dodge | KE ● 348 | Kellerberrin Road Board | 1927-28 |
| Lynn | Ada | 41 Havelock Street | Studebaker 25 H.P. | P 1210 | Perth Municipality | 1919 |
| Lynn | S. D. | Waeel | Ford | ME ● 11 | Meckering Road Board | 1925-26 |
| Lynn | S. D. | Waeel | Ford | ME ● 244 | Meckering Road Board | 1926-27 |
| Lynn | S. D. | Waeel | Ford | ME ● 244 | Meckering Road Board | 1927-28 |
| Lynn | S. T. | Waeel | Ford | ME ● 11 | Meckering Road Board | 1924-25 |
| Lynton | W. T. | 246 Lake Street, Perth | Ford | 5490 | Metro Private Car | 1924-25 |
| Lynton | W. T. | 246 Lake Street, Perth | Ford | 5490 | Metro Private Car | 1925-26 |
| Lyon | H. | Byford | Rugby | A-K ● 132 | Armadale-Kelmscott Road Board | 1926-27 |
| Lyon | H. | Byford | Rugby | A-K ● 132 | Armadale-Kelmscott Road Board | 1927-28 |
| Lyon | J. L. | Duke Street | Chevrolet | N 215 | Northam Municipality | 1927-28 |
| Lyon | P. | Kellerberrin | Hupmobile | KE ● 214 | Kellerberrin Road Board | 1926-27 |
| Lyon | P. | Kellerberrin | Hupmobile | KE ● 214 | Kellerberrin Road Board | 1927-28 |
| Lyons | J. R. | Waroona | Chevrolet | DK ● 7 | Drakebrook Road Board | 1924-25 |
| Lyons | J. R. | Waroona | Chevrolet | DK ● 6 | Drakesbrook Road Board | 1925-26 |
| Lyons | M. | Waroona | Chevrolet Truck | DK ● 49 | Drakesbrook Road Board | 1927-28 |
| Lyons | R. J. | Waroona | Oakland (hire) | DK ● 6 | Drakesbrook Road Board | 1926-27 |
| Lyons | R. J. | Waroona | Oakland | DK ● 6 | Drakesbrook Road Board | 1927-28 |
| Lyons | Robert John | Waroona | B.S.A. 4½ H.P. Motorcycle | - | Drakesbrook Road Board | 1922-23 |
| Mabeth | D. N. | C/o Zimpels Ltd. Hay Street, Perth | Studebaker | 14091 | Metro Private Car | 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 |
| Macaulay | N. | Holyoake | Ford Truck | MY ● 171 | Murray Road Board | 1927-28 |
| Macauley & Gailliard | - | Kellerberrin | Chevrolet Truck | KE ● 302 | Kellerberrin Road Board | 1926-27 |
| Macauley & Gailliard | - | Kellerberrin | Chevrolet Truck | KE ● 302 | Kellerberrin Road Board | 1927-28 |
| MacGreggor | F. | Kellerberrin | Chevrolet | KE ● 156 | Kellerberrin Road Board | 1926-27 |
| MacGregor | F. | Kellerberrin | Chevrolet | KE ● 156 | Kellerberrin Road Board | 1925-26 |
| MacGregor & Ayers | - | Kellerberrin | Overland Truck | KE ● 187 | Kellerberrin Road Board | 1926-27 |
| MacGregor & Ayres | - | Kellerberrin | Overland Truck | KE ● 187 | Kellerberrin Road Board | 1925-26 |
| MacGregor & Ayres | - | Kellerberrin | Overland Truck | KE ● 187 | Kellerberrin Road Board | 1927-28 |
| MacIntosh | L. | Lake Grace | Dodge | LG ● 154 | Lake Grace Road Board | 1927-28 |
| Mack | William | Otley Place Perth | Studebaker | 2500 | Metro Private Car | 1922-23 |
| Mack | William | 834 Hay Street, Perth | Studebaker | 2500 | Metro Private Car | 1923-24 |
| Mack | William | 834 Hay Street, Perth | Studebaker | 2500 | Metro Private Car | 1924-25 |
| Mack | William | 834 Hay Street, Perth | Studebaker | 2500 | Metro Private Car | 1925-26 |
| MacKay | A. | 61 Swan Street, Guildford | Studebaker | 6999 | Metro Private Car | 1925-26 |
| MacKay | A. | 61 Swan Street, Guildford | Studebaker | 6999 | Metro Private Car | 1926-27 |
| Mackay Bros | - | Wyola | Studebaker Truck | ME ● 294 | Meckering Road Board | 1926-27 |
| Mackeney | T. J. | 6 Johnston Street | Ford | K ● 168 | Kalgoorlie Road Board | 1927-28 |
| Mackenstsock | J. | Mount Hawthorn | Dodge | 2438 | Metro Private Car | 1926-27 |
| Mackenzie | A. | Forbes & Lake Streets, Perth | Chrysler | 342 | Metro Private Car | 1927-28 |
| MacKenzie | D. | Hines Hill | Dodge | MD ● 211 | Merredin Road Board | 1926-27 |
| Mackenzie | Dr D. | 197 Murray Street, Perth | Essex | 11558 | Metro Private Car | 1926-27 |
| MacKenzie | F. C. | Hines Hill | Dodge | MD ● 69 | Merredin Road Board | 1925-26 |
| MacKenzie | F. C. | Hines Hill | Dodge | MD ● 69 | Merredin Road Board | 1926-27 |
| Mackenzie | J. T. C. | Broome | Dodge | BM ● 31 | Broome Road Board | 1926-27 |
| Mackenzie | John A. | Wickepin | Studebaker 20 H.P. | WKP 2 | Wickepin Road Board | 1915 |
| MacKenzie | P. C. | Hines Hill | Dodge | MD ● 69 | Merredin Road Board | 1924-25 |
| MacKenzie | T. G. | Dudley Street, Maylands | Ford Truck | 12933 | Metro Private Car | 1927-28 |
| Mackenzie & Co | H. S. | - | Vulcan 10-12 H.P. | GN 4 | Geraldton Municipality | 1915 |
