| Mullett | R. | - | Ford | M ● 34 | Moora Road Board | 1926-27 |
| Mullett | R. | - | Ford | M ● 34 | Moora Road Board | 1927-28 |
| Mullett | R. E. | Moora | B.S.A. 4¼ H.P. Motorcycle | M ● 2 | Moora Road Board | 1922-23 |
| Mullewa Road Board | - | - | Ford | MW ● 32 | Mullewa Road Board | 1927-28 |
| Mulligan | G. | Winchester | Chevrolet | CA ● 223 | Carnamah Road Board | 1927-28 |
| Mulligan | G. Mrs | Forrest Street, East Fremantle | Sunbeam | 1683 | Metro Private Car | 1923-24 |
| Mulligan | Grace | Forrest Street | Ford 16 H.P. | F 82 | Fremantle Municipality | 1916 |
| Mulligan | Grace | Forrest Street, South Fremantle | Sunbeam 12 H.P. | F 82 | Fremantle Municipal Council | 1917-18 |
| Mulligan | Grace | Forrest Street | Sunbeam 12 H.P. | F 82 | Fremantle Municipal Council | 1919 |
| Mulligan | J. J. | Dalwallinu | Dodge | DL ● 61 | Dalwallinu Road Board | 1924-25 |
| Mulligan | J. J. | Dalwallinu | Dodge | DL ● 61 | Dalwallinu Road Board | 1925-26 |
| Mulligan | J. J. | Dalwallinu | Dodge | DL ● 61 | Dalwallinu Road Board | 1926-27 |
| Mulligan | J. J. | Dalwallinu | Dodge | DL ● 61 | Dalwallinu Road Board | 1927-28 |
| Mulligan | Mrs G. | Forrest Street, East Fremantle | Sunbeam | 11590 | Metro Private Car | 1926-27 |
| Mulligan | W. | Coolgardie | Ford | CG ● 22 | Coolgardie Road Board | 1925-26 |
| Mulligan | William | Coolgardie | Ford | CG ● 22 | Coolgardie Road Board | 1923-24 |
| Mulligan | WM. | Coolgardie | Ford | CG ● 22 | Coolgardie Road Board | 1924-25 |
| Mullinger | W. E. | Bridgetown | Ford | B ● 59 | Bridgetown Road Board | 1923-24 |
| Mullinger | W. E. | Queens Road, South, Guildford | Ford | 6910 | Metro Private Car | 1924-25 |
| Mullinger | W. E. | 3 James Street, East Guildford | Ford | 6910 | Metro Private Car | 1925-26 |
| Mullins | H. J. | Waroona | Chevrolet | DK ● 53 | Drakesbrook Road Board | 1927-28 |
| Mullins | Mrs M. | Peel Estate | Chevrolet | 2757 | Metro Private Car | 1927-28 |
| Mullis | J. L. | Nannup | Studebaker | BL ● 8 | Nannup Road Board | 1926-27 |
| Mulliss | J. L. | Nannup | Pontiac | BL ● 8 | Nannup Road Board | 1927-28 |
| Mullumby | M. | Roebourne | Overland | R ● 32 | Roebourne Road Board | 1927-28 |
| Mulqueen | J. F. | 121 Barrack Street, Perh | Rover 8 H.P. | P 166 | Perth Municipality | 1916 |
| Mulvay | G. G. | Maddington | Overland | GS ● 10 | Gosnells Road Board | 1924-25 |
| Mulvay | G. G. | Maddington | Overland | 6895 | Metro Private Car | 1925-26 |
| Mulvay | G. G. | Maddington | Overland | 6895 | Metro Private Car | 1926-27 |
| Mulvay | G. G. | Maddington | Rugby | 6895 | Metro Private Car | 1927-28 |
| Mulvay | George G. | Maddington | Overland | GS ● 10 | Gosnells Road Board | 1922-23 |
| Mulvay | George G. | Maddington | Overland | GS ● 10 | Gosnells Road Board | 1923-24 |
| Mumford | L. N. | Denmark | Overland | DE ● 71 | Denmark Road Board | 1927-28 |
| Mumme | A. | Allanson | Dodge | CO ● 138 | Collie Road Board | 1927-28 |
| Mumme | M. | Tammin | Ford Truck | ME ● 229 | Meckering Road Board | 1926-27 |
| Mumme | M. | Tammin | Ford Truck | ME ● 229 | Meckering Road Board | 1927-28 |
| Munarra Pastoral Co | - | Munarra Station | Ford | MK ● 5 | Meekatharra Road Board | 1924-25 |
| Munarra Pastoral Co | - | Munarra Station | Buick | MK ● 7 | Meekatharra Road Board | 1924-25 |
| Munarra Pastoral Co | - | Meekatharra | Reo Truck | MK ● 5 | Meekatharra Road Board | 1925-26 |
| Munarra Pastoral Co | - | Munarra Station | Dodge | MK ● 41 | Meekatharra Road Board | 1925-26 |
| Munarra Pastoral Co | - | Munarra Station | Overland | MK ● 5 | Meekatharra Road Board | 1926-27 |
| Munarra Pastoral Co | - | Meekatharra | Ford | MK ● 41 | Meekatharra Road Board | 1927-28 |
| Muncey | E. R. | Mundijong | Chevrolet Truck | SJ ● 138 | Serpentine-Jarrahdale Road Board | 1927-28 |
| Muncey | M. S. Mrs | 105 Outram Street, West Perth | Studebaker | 3356 | Metropolitan Hire and Trade Cars | 1923-24 |
| Muncey | Mrs M. A. | Coliseum Buildings Rokeby Road, Subiaco | Oakland | 3530 | Metro Private Car | 1924-25 |
| Muncey | Mrs M. A. | Rokeby Road, Subiaco | Oakland | 3530 | Metro Hire or Trade | 1926-27 |
| Muncey | Mrs M.A. | Colissum Building Rokeby Road, Subiaco | Oakland | 3530 | Metro Hire or Trade | 1925-26 |
| Muncey | R. E. | 129 Roberts Road | - | S 73 | Subiaco Municipality | 1919 |
| Muncey | R. E. | 129 Roberts Road | - | S 74 | Subiaco Municipality | 1919 |
| Muncey | R. E. & Son | 129 Roberts Road, Subiaco | Wolseley 16 H.P. | P 128 | Perth Municipality | 1919 |
