| Mauger | L. E. | Gladstone Avenue, South Perth | Overland | 13430 | Metro Private Car | 1926-27 |
| Maund | J. | Mount Sir Samuel | Overland | LA ● 31 | Lawlers Road Board | 1925-26 |
| Maund | J. | Mount Sir Samuel | Overland | LA ● 11 | Lawlers Road Board | 1927-28 |
| Maurice | Flynn | Dalwallinu | Ford | DL ● 119 | Dalwallinu Road Board | 1927-28 |
| Maus & Wimbridge | - | Gabanintha | Buick | NN ● 7 | Nannine Road Board | 1925-26 |
| Mauton | C. E. | Mason Street, Cottesloe Beach | Overland | 12291 | Metro Private Car | 1926-27 |
| Mauton | T. E. | Swan Street, North Fremantle | Overland | 4431 | Metro Private Car | 1926-27 |
| Maver | G. | Northampton | Grey | NR ● 101 | Northampton Road Board | 1927-28 |
| Mavor | G. | Northampton | Grey | NR ● 101 | Northampton Road Board | 1926-27 |
| Mavros | G. | Quairading | Vauxhall | Q ● 55 | Quairading Road Board | 1926-27 |
| Mavros | G. | Quairading | Vauxhall | Q ● 55 | Quairading Road Board | 1927-28 |
| Mavros | G. S. | Quairading | Graham Truck | Q ● 255 | Quairading Road Board | 1927-28 |
| Mavros | G. T. | Quairading | Austin | Q ● 55 | Quairading Road Board | 1923-24 |
| Mavros | G. T. | Quairading | Arrol-Johnston | Q ● 55 | Quairading Road Board | 1924-25 |
| Mawby | B. D. | - | Ford | Q ● 61 | Quairading Road Board | 1925-26 |
| Mawby | B. D. | - | Ford | Q ● 61 | Quairading Road Board | 1926-27 |
| Mawby | T. | Jacob's Well | Essex | Q ● 61 | Quairading Road Board | 1927-28 |
| Mawley | G. | 18 Hearley Street, Fremantle | Buick | 9121 | Metro Private Car | 1925-26 |
| Mawley | G. | Bayview Terrace, Claremont | Ford Van | 11562 | Metro Private Car | 1926-27 |
| Mawley | G. | 18 Henry Street, Fremantle | Buick | 9121 | Metro Private Car | 1926-27 |
| Mawley | G. | 18 Henry Street, Fremantle | Buick | 9121 | Metro Private Car | 1927-28 |
| Mawson | Capt. | Salvation Army | Ford | NGN 30 | Narrogin Municipality | 1926-27 |
| Maxfield | J. B. | Westonia | Chevrolet Truck | WT ● 51 | Westonia Road Board | 1927-28 |
| Maxwell | F. J. | Ashton Avenue, Belmont | Maxwell | 7801 | Metro Private Car | 1925-26 |
| Maxwell | Hugh | 313 Onslow Road, Subiaco | Ford Wagon | 2700 | Metro Private Car | 1927-28 |
| Maxwell | I. | Augusta | Ford Truck | AU ● 16 | Augusta Road Board | 1926-27 |
| Maxwell | I. | Augusta | Ford Truck | AU ● 16 | Augusta Road Board | 1927-28 |
| Maxwell | J. | Nalya | Chevrolet | BO ● 60 | Brookton Road Board | 1925-26 |
| Maxwell | J. | Nalya | Chevrolet | BO ● 60 | Brookton Road Board | 1926-27 |
| Maxwell | J. | Nayla | Chevrolet | BO ● 60 | Brookton Road Board | 1927-28 |
| Maxwell | John | Nalya | Chevrolet | BO ● 60 | Brookton Road Board | 1924-25 |
| Maxwell | John Forrest | P. & O. Hotel | Sunbeam 12-15 H.P. | F 78 | Fremantle Municipality | 1915 |
| Maxwell | John Forrest | P. & O. Hotel | Sunbeam 12-15 horspower | F 78 | Fremantle Municipality | 1916 |
| Maxwell | M. M. | Bridgetown | Whippet | B ● 173 | Bridgetown Road Board | 1927-28 |
| Maxwell | Richard Henry | 17 Nicholson Road, Subiaco | Ford | BU ● 17 | Blackwood (Upper) Road Board | 1923-24 |
| Maxwell Motor Garage | - | Adelaide Street | - | F 59 | Fremantle Municipal Council | 1917-18 |
| Maxwells | - | Maxwells Garage | Ford 20 H.P. | F 59 | Fremantle Municipal Council | 1919 |
| May | A. | Bridgetown | Chevrolet | B ● 92 | Bridgetown Road Board | 1926-27 |
| May | A. | Dongolocking | Overland | DU ● 48 | Dumbleyung Road Board | 1927-28 |
| May | Arthur. H. | 175 Duke Street, East Fremantle | Morris-Cowley | 12451 | Metro Private Car | 1927-28 |
| May | F. | Commercial Road | Ford 15 H.P. | MJ 53 | Midland Junction Municipality | 1916 |
| May | Frank | Commercial Road | Ford 15 H.P. | MJ 53 | Midland Junction Municipality | 1915 |
| May | G. L. | Koorda | Overland | WM ● 83 | Wyalkatchem Road Board | 1926-27 |
| May | G. L. | Koorda | Overland | WM ● 83 | Wyalkatchem Road Board | 1927-28 |
| May | G. W. | Korrelocking | Chevrolet Truck | WM ● 332 | Wyalkatchem Road Board | 1927-28 |
| May | H. | Midland Junction | - | Ce 38 | Cottesloe Municipality | 1915 |
| May | H. J. | Albany | Dodge | A 34 | Albany Municipality | 1927-28 |
| May | H. W. | Royal Street, Claremont | Ford Wagon | 9961 | Metro Private Car | 1927-28 |
| May | Herbert | Perth-Fremantle Road | Ford 15 H.P. | Ce ● 37 | Cuballing Road Board | 1917-18 |
| May | Herbert | Perth-Fremantle Road | Ford 15 H.P. | Ce 37 | Municipality of Cottesloe | 1919 |
