| McKay | Neil | Benjaberring | Essex | WM ● 6 | Wyalkatchem Road Board | 1926-27 |
| McKay | Neil | Benjaberring | Essex | WM ● 6 | Wyalkatchem Road Board | 1927-28 |
| McKay | O. | C/o H. V. McKay Perth | Dodge | 2342 | Metro Private Car | 1927-28 |
| McKay | P. | Meckering | Ford | ME ● 57 | Meckering Road Board | 1922-23 |
| McKay | P. | Meckering | Ford | ME ● 57 | Meckering Road Board | 1924-25 |
| McKay | P. | Meckering | Ford | ME ● 57 | Meckering Road Board | 1925-26 |
| McKay | P. | Meckering | Ford | ME ● 57 | Meckering Road Board | 1926-27 |
| McKay | P. | Burgoyne Street | Ford | N 190 | Northam Municipality | 1927-28 |
| McKay | R. | - | Overland | Y ● 17 | York Road Board | 1917-18 |
| McKay | R. | - | Overland 20 H.P. | Y ● 17 | York Road Board | 1919 |
| McKay | R. | - | Overland 20 H.P. | Y ● 17 | York Road Board | 1922-23 |
| McKay | R. | Meckering | Ford | ME ● 57 | Meckering Road Board | 1923-24 |
| McKay | R. H. | Ejanding | Chevrolet | D ● 167 | Dowerin Road Board | 1927-28 |
| McKay | R. W. | Moora | Chevrolet | M ● 43 | Moora Road Board | 1923-24 |
| McKay | R. W. | Moora | Chevrolet | M ● 43 | Moora Road Board | 1924-25 |
| McKay | R. W. | Moora | Chevrolet | M ● 43 | Moora Road Board | 1925-26 |
| McKay | R. W. | - | Willys-Knight | M ● 43 | Moora Road Board | 1927-28 |
| McKay | S. | Lake Grace | Dodge | LG ● 25 | Lake Grace Road Board | 1925-26 |
| McKay | S. | Lake Grace | Dodge | LG ● 25 | Lake Grace Road Board | 1926-27 |
| McKay | S. | Lake Grace | Dodge | LG ● 25 | Lake Grace Road Board | 1927-28 |
| McKay | S. K. | Roebourne | Overland | R ● 20 | Roebourne Road Board | 1926-27 |
| McKay | S. L. | Lake Grace | Dodge | LG ● 25 | Lake Grace Road Board | 1924-25 |
| McKay | S. P. | Munda Station, via Port Hedland | Ford 15 H.P. | R 8 | Roebourne Road Board | 1916 |
| McKay | S. P. | Balmoral Station | B.S.A. | R ● 1 | Roebourne Road Board | 1919 |
| McKay | T. | York | Chevrolet | Y ● 104 | York Road Board | 1924-25 |
| McKay | T. S. | Hannan Street | Chevrolet | KMC 120 | Kalgoorlie Municipal Council | 1922-23 |
| McKay | Thos | York | Chevrolet | Y ● 104 | York Road Board | 1925-26 |
| McKay | Thos. | York | Chevrolet | Y ● 104 | York Road Board | 1926-27 |
| McKay | Thos. | York | Ford | Y ● 104 | York Road Board | 1927-28 |
| McKay | W. A. | 2 Forrest Street, Mount Lawley | Cleveland | 7330 | Metro Private Car | 1926-27 |
| McKay | W. A. | C/o Fauldings Murray Street | Chrysler | 13652 | Metro Private Car | 1926-27 |
| McKay | W. A. | 2 Ferrar Street, Mount Lawley | Chrysler | 13652 | Metro Private Car | 1927-28 |
| McKay | Wm. A. | 49 Flinders Street, Mount Hawthorn | Dodge | 15 | Metro Private Car | 1922-23 |
| McKay | Wm. A. | 49 Flinders Street, Mount Hawthorn | Dodge | 55 | Metro Private Car | 1922-23 |
| McKay | Wm. A. | 49 Flinders Street, Mount Hawthorn | Dodge | 55 | Metro Private Car | 1923-24 |
| McKay & Booth | - | Pinjarra | Ford Truck | MY ● 199 | Murray Road Board | 1926-27 |
| McKay & Campbell | - | Damboring | Chevrolet | DL ● 97 | Dalwallinu Road Board | 1927-25 |
| McKay & Sons | - | Bruce Rock | Dodge for Trade or Hire | BK ● 23 | Bruce Rock Road Board | 1922-23 |
| McKay Estate | S. | Port Hedland | Overland | R ● 20 | Roebourne Road Board | 1925-26 |
| McKay H. V. Ltd | - | Murray Street, Perth | Ford | 14039 | Metro Private Car | 1926-27 |
| McKay Ltd | Hugh | 36 Pier Street, Perth | Dodge | 222 | Metro Private Car | 1923-24 |
| McKay Ltd | Hugh | 36 Pier Street, Perth | Dodge | 222 | Metro Private Car | 1926-27 |
| McKay Pty. Ltd | H. V. | Murray Street, Perth | Dodge | 7745 | Metro Private Car | 1926-27 |
| Mckay Pty. Ltd | H. V. | Murray Street, Perth | Ford | 226 | Metro Private Car | 1927-28 |
| McKay Pty.Ltd | H. V. | Murray Street, Perth | Chrysler | 14098 | Metro Private Car | 1927-28 |
| McKecne | W. | 336 Hay Street, Subiaco | Overland | 8316 | Metro Private Car | 1925-26 |
| McKee | A. E. | Merredin | Chevrolet | MD ● 298 | Merredin Road Board | 1927-28 |
| McKee | H. L. P. | 16 Otway Street, Swanbourne | Buick | 5235 | Metro Private Car | 1924-25 |
| Mckee | H. L. P. | Otway Street, Swanbourne | Buick | 6656 | Metro Private Car | 1924-25 |
| McKee | H. L. P. | Otway Street, Swanbourne | Buick | 6656 | Metro Private Car | 1925-26 |
