| Molster | T. | Mullewa | Hupmobile | MW ● 23 | Mullewa Road Board | 1924-25 |
| Molster | T. | Mullewa | Hupmobile | MW ● 23 | Mullewa Road Board | 1926-27 |
| Molster | T. | Mullewa | Hupmobile | MW ● 23 | Mullewa Road Board | 1927-28 |
| Molster | T. | - | Chevrolet Lorry | MW ● 42 | Mullewa Road Board | 1927-28 |
| Molster | Thomas | Mullewa | Hupmobile | MW ● 23 | Mullewa Road Board | 1923-24 |
| Molyneaux Motor Trans | - | 19 Packenham Street, Fremantle | Vulcan W. | 3908 | Metro Hire or Trade | 1924-25 |
| Molyneaux Motor Trans | - | Mouatt Street, Fremantle | International Wagon | 3913 | Metro Hire or Trade | 1924-25 |
| Molyneaux Motor Trans | - | 39 Phillamore Street, South Fremantle | Vulcan W. | 3927 | Metro Hire or Trade | 1924-25 |
| Molyneaux Motor Transport | - | 70 Queen Victoria Street, Fremantle | GarFord | 3861 | Metro Hire or Trade | 1925-26 |
| Molyneaux Motor Transport | - | Queen Victoria Street, Fremantle | International Wagon | 3867 | Metro Hire or Trade | 1925-26 |
| Molyneaux Motor Transport | - | Queen Victoria Street, Fremantle | International Wagon | 3867 | Metro Hire or Trade | 1926-27 |
| Molyneaux Motor Transport | - | 70 Queen Victoria Street, Fremantle | Vulcan | 3908 | Metro Hire or Trade | 1926-27 |
| Molyneaux Motor Transport | - | 76 Queen Victoria Street, Fremantle | International Wagon | 10334 | Metro Hire or Trade | 1926-27 |
| Molyneaux Trans. Co | M. | 82 Victoria Avenue, Fremantle | Straker-Sq. | 3995 | Metro Hire or Trade | 1924-25 |
| Molyneaux Transport | - | 70 Queen Vic. Street, Fremantle | Garford | 10313 | Metro Hire or Trade | 1926-27 |
| Molyneaux Transport Co | - | 70 Queen Victoria Street, Fremantle | Vulcan | 3820 | Metro Hire or Trade | 1926-27 |
| Molyneaux Transport Co | - | 70 Queen Victoria Street, Fremantle | Vulcan | 3908 | Metro Hire or Trade | 1927-28 |
| Molyneux | E. | Kelmscott | Ford 20 H.P. | A-K ● 15 | Armadale-Kelmscott Road Board | 1917-18 |
| Molyneux | R. | 21 Millers Street, Victoria Park | Ford | 1762 | Metro Private Car | 1922-23 |
| Molyneux | R. | 21 Millers Street, Victoria Park | Ford | 1762 | Metro Private Car | 1923-24 |
| Molyneux | R. | Northam | Dodge | N ● 245 | Northam Road Board | 1927-28 |
| Molyneux | Richard | 82 Victoria Avenue, North Fremantle | Lacre Wagon | 3453 | Metropolitan Hire and Trade Cars | 1923-24 |
| Molyneux Bros | - | Mukinbudin | Ford | NA ● 43 | Nungarin Road Board | 1925-26 |
| Molyneux Bros | - | Mukinbudin | Ford | NA ● 43 | Nungarin Road Board | 1927-28 |
| Monaghan | C. J. | Bunbury | Ford | BY 48 | Bunbury Municipality | 1926-27 |
| Monaghan | C. J. | Bunbury | Ford | BY 48 | Bunbury Municipality | 1927-28 |
| Monaghan | J. P. | Globe Hotel, Perth | Morris Cowley | 14314 | Metro Private Car | 1927-28 |
| Monalas | Con | Lyalls Mill | Indian 5 H.P. | CO ● 6 | Collie Road Board | 1919 |
| Monarch Laundry | - | Railway Parade, West Perth | Rugby Van | 4713 | Metro Private Car | 1927-28 |
| Monarch Laundry Ltd | - | West Perth | Ford 15 H.P. | P 431 | Perth Municipality | 1919 |
| Monarch Laundry Ltd | - | West Perth | Ford 15 H.P. | P 482 | Perth Municipality | 1919 |
| Moncey | E. R. | 12 Howick Street, Victoria Park | Stellite | 565 | Metro Private Car | 1922-23 |
| Monchmore | B. G. | Lansdowne Road, South Perth | Oldsmobile | 5694 | Metro Private Car | 1927-28 |
| Monck | C. | Millbrook | Ford | A ● 10 | Albany Road Board | 1924-25 |
| Monck | I. O. | 69 Hammersley Road, Subiaco | Hudson | 14 | Metro Private Car | 1923-24 |
| Monck | L. | Stirling Arms, Guildford | Studebaker | G20 | Guildford Municipality | 1916 |
| Monck | L. C. | Nangeenan | Studebaker | MD ● 63 | Merredin Road Board | 1924-25 |
| Monck | L. C. | Nangeenan | Studebaker | MD ● 63 | Merredin Road Board | 1925-26 |
| Monck-Mason | T. G. | Cranbrook | Ford | PL ● 102 | Plantagenet Road Board | 1924-25 |
| Monck-Mason | T. G. | Cranbrook | Ford | PL ● 102 | Plantagenet Road Board | 1925-26 |
| Monck-Mason | T. G. | Cranbrook | Ford | CB ● 36 | Cranbrook Road Board | 1926-27 |
| Monck-Mason | T. G. | Cranbrook | Ford | PL ● 102 | Plantagenet Road Board | 1926-27 |
| Monck-Mason | T. G. | Cranbrook | Ford | CB ● 36 | Cranbrook Road Board | 1927-28 |
| Moncreiff | A. | Meekatharra | Ford Truck | MK ● 48 | Meekatharra Road Board | 1924-25 |
| Moncrief | A. | Belele Station | Ford Truck | MK ● 53 | Meekatharra Road Board | 1925-26 |
| Moncrief | A. | Belele Station | Ford Truck | MK ● 53 | Meekatharra Road Board | 1926-27 |
| Moncrief | A. | Meekatharra | Ford | MK ● 53 | Meekatharra Road Board | 1927-28 |
| Money | E. F. | Bunbury | Pontiac | BY 66 | Bunbury Municipality | 1927-28 |
| Money | G. C. | Bunbury | R.C.H. 12 H.P. | By 12 | Bunbury Municipality | 1915 |
| Money | G. C. | Bunbury | R.C.H. 12 H.P. | By 12 | Bunbury Municipality | 1916 |
