| Mackay & Co | - | 38-42 Mongar Street, Perth | Ford Wagon | 9188 | Metro Private Car | 1927-28 |
| Mackay & Co | - | 38-42 Monger Street, Perth | Ford Wagon | 9421 | Metro Private Car | 1927-28 |
| Mackay & Co | - | Monger Street, Perth | Ford Wagon | 4641 | Metro Private Car | 1927-28 |
| Mackay & Co | - | Monger Street, Perth | Ford Truck | 13995 | Metro Private Car | 1927-28 |
| Mackay Bros | - | Buckland | Ford | N ● 32 | Northam Road Board | 1922-23 |
| Mackay Bros | - | Buckland | Triumph Motorcycle | N ● 41 | Northam Road Board | 1922-23 |
| Mackay Bros | - | Wyola | Studebaker Truck | ME ● 294 | Meckering Road Board | 1926-27 |
| Mackay Bros. | - | Bucklands | Talbot 20 H.P. | N 20 | Northam Road Board | 1919 |
| Mackay Bros. | - | Bucklands | Ford Lorry 20 H.P. | N 32 | Northam Road Board | 1919 |
| Mackay Bros. | - | - | Triumph | N 41 | Northam Road Board | 1919 |
| Mackay Bros. | - | Buckland | Ford | N ● 32 | Northam Road Board | 1923-24 |
| 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 |
| Mackey | A. | 344 Hay Street, Subiaco | Ford | 2514 | Metro Private Car | 1922-23 |
| Mackey | A. N. | 344 Hay Street, Subiaco | Cleveland | 5934 | Metro Private Car | 1924-25 |
| Mackey | V. | Albany Road, Gosnells | Ford | 12628 | Metro Private Car | 1927-28 |
| Mackey & Co | - | Monger Street, Perth | Ford Wagon | 4641 | Metro Private Car | 1924-25 |
| Mackey & Co | - | Monger Street, Perth | Ford Wagon | 4641 | Metro Private Car | 1925-26 |
| Mackey & Co Ltd | - | Egan Street, Kalgoorlie | Ford Truck | KMC 256 | Kalgoorlie Municipal Council | 1926-27 |
| Mackey & Co Ltd | - | Egan Street, Kalgoorlie | Ford Truck | KMC 256 | Kalgoorlie Municipal Council | 1927-28 |
| Mackie | A. A. | Kondinin | Ford Truck | KN ● 35 | Kondinin Road Board | 1927-28 |
| Mackie | D. W. F. | Narrogin | Ford 20 H.P. | NGN 6 | Narrogin Municipality | 1922-23 |
| Mackie | D. W. H. | Narrogin | Ford 20 H.P. | NGN 6 | Narrogin Municipality | 1915 |
| Mackie | D. W. H. | Narrogin | Ford 20 H.P. | NGN 6 | Narrogin Municipality | 1916 |
| Mackie | D. W. H. | Narrogin | Ford 20 H.P. | NGN 6 | Narrogin Municipality | 1917-18 |
| Mackie | D. W. H. | Narrogin | Ford 20 H.P. | NGN 6 | Narrogin Municipality | 1919 |
| Mackie | Dr D. W. H. | Narrogin | Dodge | NGN 6 | Narrogin Municipality | 1924-25 |
| Mackie | Dr D. W. H. | Narrogin | Dodge | NGN 6 | Narrogin Municipality | 1925-26 |
| Mackie | Dr D. W. H. | Narrogin | Dodge | NGN 6 | Narrogin Municipality | 1926-27 |
| Mackie | Dr D. W. H. | Narrogin | Dodge | NGN 6 | Narrogin Municipality | 1927-28 |
| Mackie | Dr. D. W. H. | Narrogin | Dodge | NGN 6 | Narrogin Municipality | 1923-24 |
| Mackie | J. R. | Burges Siding | Rugby | Y ● 108 | York Road Board | 1925-26 |
| Mackie | J. R. | Burges Siding | Rugby | Y ● 108 | York Road Board | 1926-27 |
| Mackie | J. R. | Burges Siding | Dodge | Y ● 108 | York Road Board | 1927-28 |
| Mackie | M. A. Mrs | 64 Victoria Avenue, Claremont | Fiat | 2847 | Metro Private Car | 1923-24 |
| Mackie | Margaret A. | 64 Victoria Avenue, Claremont | Dodge | 2355 | Metro Private Car | 1922-23 |
| Mackie | Mrs M. A | 146 Victoria Avenue, Claremont | Fiat | 8348 | Metro Private Car | 1927-28 |
| Mackie | Mrs M. A. | 64 Victoria Avenue, Claremont | Fiat | 2847 | Metro Private Car | 1924-25 |
| Mackie | Mrs M. A. | 146 Victoria Avenue, Claremont | Fiat | 2847 | Metro Private Car | 1925-26 |
| Mackie | Mrs M. A. | 146 Victoria Avenue, Claremont | Fiat | 2847 | Metro Private Car | 1926-27 |
