| Jukes | J. W. | Korbel | Ford | BK ● 95 | Bruce Rock Road Board | 1924-25 |
| Jukes | J. W. | Fimiston | Ford | K ● 5 | Kalgoorlie Road Board | 1924-25 |
| Jukes | James V. | Filmiston | Chevrolet | K ● 5 | Kalgoorlie Road Board | 1927-28 |
| Jukes | John W. Jnr | Korbel | Ford | MD ● 39 | Merredin Road Board | 1924-25 |
| Jukes | John W. junior | Korbel | Ford | MD ● 39 | Merredin Road Board | 1923-24 |
| Jukes Associated | Jas. V. | - | Ford 15-9 H.P. | K 5 | Kalgoorlie Road Board | 1916 |
| Kaesehagen | - | Bunbury | Studebaker | BY 133 | Bunbury Municipality | 1925-26 |
| Kaeshagen | - | Bunbury | Studebaker | BY 133 | Bunbury Municipality | 1926-27 |
| Kaeshagen | W. H. | Bunbury | Studebaker | BY 133 | Bunbury Municipality | 1927-28 |
| Kaiser | A. B. | Pickering Brook | Hupmobile Truck | DR ● 51 | Darling Range Road Board | 1924-25 |
| Kane & Wilson | - | Newdegate | Graham Truck | LG ● 124 | Lake Grace Road Board | 1927-28 |
| Kaskell | Thomas | Corrigin | Ford Truck | CR ● 56 | Corrigin Road Board | 1927-28 |
| Kassell | S. | Cunderdin | Ford Truck | ME ● 220 | Meckering Road Board | 1926-27 |
| Kay | G. R. | 1250 Hay Street, Perth | Studebaker | 198 | Metro Private Car | 1926-27 |
| Kay | J. | Baandee | Buick | KE ● 76 | Kellerberrin Road Board | 1924-25 |
| Kay | J. | Baandee | Buick | KE ● 76 | Kellerberrin Road Board | 1925-26 |
| Kay | J. | Baandee | Buick | KE ● 76 | Kellerberrin Road Board | 1926-27 |
| Kay | J. | Baandee | Buick | KE ● 76 | Kellerberrin Road Board | 1927-28 |
| Kaye | W. | 37 Cowle Street, North Perth | Studebaker | 3746 | Metro Hire or Trade | 1925-26 |
| Keading | F. W. | - | Dodge | M ● 28 | Moora Road Board | 1927-28 |
| Kealiy | T. | Fairbridge Farm School | Rugby | MY ● 194 | Murray Road Board | 1926-27 |
| Keall | E. C. D. | Preston | Ford | PE ● 131 | Preston Road Board | 1927-28 |
| Keall | Mrs A. | 70 King's Park Road, West Perth | Armstrong-Sidd | 951 | Metro Private Car | 1927-28 |
| Kealley | E. | Narrogin | B.S.A. 4¾ H.P. | NGN 7 | Narrogin Municipality | 1919 |
| Kealley | E. B. S. A. | Narrogin | B.S.A. 4¾ H.P. Motorcycle | NGN 7 | Narrogin Municipality | 1917-18 |
| Kealley | M. | Woodanilling | Overland | WO ● 26 | Woodanilling Road Board | 1926-27 |
| Keally | E. A. | Narrogin | B.S.A. Cycle 7 H.P. Motorcycle | NGN 7 | Narrogin Municipality | 1922-23 |
| Keally | E. E. | Lake Grace | Ford Truck | LG ● 55 | Lake Grace Road Board | 1925-26 |
| Keally | E. E. | Lake Grace | Ford Truck | LG ● 55 | Lake Grace Road Board | 1926-27 |
| Keally | E. E. | Lake Grace | Chevrolet | LG ● 41 | Lake Grace Road Board | 1927-28 |
| Keally | M. | Woodanilling | Overland | WO ● 26 | Woodanilling Road Board | 1927-28 |
| Keamey | T. | Moora | Ford | M ● 60 | Moora Road Board | 1924-25 |
| Keamy | L. | Watheroo | Ford | M ● 50 | Moora Road Board | 1924-25 |
| Keamy | L. | Watheroo | Ford Truck | M ● 25 | Moora Road Board | 1926-27 |
| Keamy | L. | Watheroo | Dodge | M ● 50 | Moora Road Board | 1926-27 |
| Keamy | L. | Watheroo | Ford Truck | M ● 25 | Moora Road Board | 1927-28 |
| Keamy | L. | Moora | Ford | M ● 27 | Moora Road Board | 1927-28 |
| Keamy | L. | Watheroo | Oldsmobile | M ● 50 | Moora Road Board | 1927-28 |
| Keamy | Leslie | Watheroo | Ford | M ● 50 | Moora Road Board | 1923-24 |
| Keamy | T. | Moora | Ford 20 H.P. | M 27 | Moora Road Board | 1919 |
| Keamy | T. | Moora | Ford | M ● 27 | Moora Road Board | 1923-24 |
| Keamy | T. | Moora | Ford | M ● 27 | Moora Road Board | 1924-25 |
| Keamy | T. | Moora | Ford | M ● 52 | Moora Road Board | 1924-25 |
| Keamy | T. | Moora | Ford | M ● 27 | Moora Road Board | 1925-26 |
| Keamy | T. | Moora | Ford | M ● 52 | Moora Road Board | 1925-26 |
| Keamy | T. | Moora | Ford | M ● 27 | Moora Road Board | 1926-27 |
| Keamy | T. | Moora | Ford | M ● 52 | Moora Road Board | 1926-27 |
| Keamy | T. | Moora | Garage License | M ● 52 | Moora Road Board | 1927-28 |
| Kean | J. R. | 61 Perth Fremantle Road, Cottesloe | Chevrolet | 9658 | Metro Private Car | 1926-27 |
| Kean | J. R. | 61 Perth-Fremantle Road, Cottesloe | Chevrolet | 9658 | Metro Private Car | 1927-28 |
