| Knapp | J. | Ballidu | Dodge | WB ● 12 | Wongan-Ballidu Road Board | 1926-27 |
| Knapp | J. | Ballidu | Graham Truck | WB ● 150 | Wongan-Ballidu Road Board | 1926-27 |
| Knapp | J. | Ballidu | Dodge | WB ● 12 | Wongan-Ballidu Road Board | 1927-28 |
| Knapp | J. | Ballidu | Graham Truck | WB ● 150 | Wongan-Ballidu Road Board | 1927-28 |
| Knapp | Karl | 48 Altena Street, West Perth | Nash | 1318 | Metro Private Car | 1927-28 |
| Knapp | R. | Ballidu | Dodge | WB ● 32 | Wongan-Ballidu Road Board | 1926-27 |
| Knapp | R. | Ballidu | Dodge | WB ● 32 | Wongan-Ballidu Road Board | 1927-28 |
| Knapp | R. | Ballidu | Chevrolet Truck | WB ● 125 | Wongan-Ballidu Road Board | 1927-28 |
| Knapp | T. F. | Kellerberrin | Ford | KE ● 128 | Kellerberrin Road Board | 1927-28 |
| Knapton | C. | Greenbushes | Chevrolet | BN ● 12 | Balingup Road Board | 1927-28 |
| Knapton | C. W. | Greenbushes | Hupmobile | BN ● 12 | Balingup Road Board | 1925-26 |
| Knapton | C. W. | Greenbushes | Chevrolet | BN ● 12 | Balingup Road Board | 1926-27 |
| Kneale | A. L. | 137 Eighth Avenue, Maylands | Chevrolet | 14415 | Metro Private Car | 1927-28 |
| Knhl | W. | Wemgup, Upper Blackwood | B.S.A. | BU ● 3 | Blackwood (Upper) Road Board | 1919 |
| Kniep | J. | 51 Murray Street, Perth | D.F.P. | 2279 | Metro Private Car | 1922-23 |
| Kniep | Junior | 51 Murray Street, Perth | D.F.P. | 2279 | Metro Private Car | 1923-24 |
| Knight | A. | 371 Hay Street, Perth | Citroen | 5387 | Metro Private Car | 1925-26 |
| Knight | A. | 371 Hay Street, Perth | Citroen | 5387 | Metro Private Car | 1926-27 |
| Knight | A. | 371 Hay Street, Perth | Citroen | 5387 | Metro Private Car | 1927-28 |
| Knight | A. C. | Katanning | Chevrolet | KA ● 109 | Katanning Road Board | 1924-25 |
| Knight | A. C. | Katanning | Chevrolet | KA ● 109 | Katanning Road Board | 1925-26 |
| Knight | A. D. V. | Donnybrook | Ford | PE ● 39 | Preston Road Board | 1923-24 |
| Knight | A. F. | Katanning | Studebaker | KA ● 109 | Katanning Road Board | 1927-28 |
| Knight | A. O. V. | Donnybrook | Ford | PE ● 39 | Preston Road Board | 1924-25 |
| Knight | A. O. V. | Donnybrook | Ford | PE ● 39 | Preston Road Board | 1925-26 |
| Knight | Agnes | 15 Kimberley Street | Standard 10 H.P. | P 1140 | Perth Municipality | 1919 |
| Knight | Agnes | Pemberton | Chrysler | WA ● 207 | Manjimup Road Board | 1927-28 |
| Knight | C. | Govt. Tender Board | Indian 7 H.P. | P 737 | Perth Municipality | 1915 |
| Knight | C. | Gugeri Street | Douglas 2¾ H.P. Motorcycle | C 6 | Claremont Municipality | 1916 |
| Knight | C. | Gugeri Street, Claremont | Car | C ● 6 | Claremont Municipality | 1917-18 |
| Knight | C. | Gugeri Street, Claremont | - | C 6 | Claremont Municipality | 1919 |
| Knight | C. E. | 16 Normandy Street, Maylands | Chevrolet | 6698 | Metro Private Car | 1927-28 |
| Knight | Cecil R. F. | 1 Dean Street, Claremont | Austin | 1105 | Metro Private Car | 1927-28 |
| Knight | D. | Gugeri Street, Claremont | Car | C ● 17 | Claremont Municipality | 1917-18 |
| Knight | D. | Gugeri Street, Claremont | - | C 17 | Claremont Municipality | 1919 |
| Knight | D. | Trayning | Buick | KTY ● 5 | Kununoppin-Trayning Road Board | 1924-25 |
| Knight | D. | Trayning | Buick | KTY ● 5 | Kununoppin-Trayning Road Board | 1925-26 |
| Knight | D. | Trayning | Buick | KTY ● 5 | Kununoppin-Trayning Road Board | 1926-27 |
| Knight | D. | Trayning | Buick | KTY ● 5 | Kununoppin-Trayning Road Board | 1927-28 |
| Knight | D. J. L. | 59 Malcolm Street, Perth | Essex | 185 | Metro Private Car | 1922-23 |
| Knight | Digby L. C. | 59 Malcolm Street, Perth | Essex | 185 | Metro Private Car | 1923-24 |
| Knight | Digby L. E. S. A. | Bank Chambers, William St | Hudson | 600 | Metro Private Car | 1926-27 |
| Knight | F. W. | Koolanooka | Triumph Motorcycle | PM ● 1 | Perenjori-Morawa Road Board | 1922-23 |
| Knight | F. W. | Koolanooka | Ford | PM ● 7 | Perenjori-Morowa Road Board | 1923-24 |
| Knight | F. W. | Koolanooka | Ford | PM ● 7 | Perenjori-Morawa Road Board | 1924-25 |
| Knight | Francis | C/o D. & W. Murray Ltd | Ford 20 H.P. | P 107 | Perth Municipality | 1917-18 |
| Knight | Francis | C/o. D. & W. Murray Ltd. | Ford 20 H.P. | P 107 | Perth Municipality | 1919 |
| Knight | Frederick W. | Bowgada | Ford Truck | PM ● 89 | Perenjori-Morawa Road Board | 1927-28 |
| Knight | G. C. | Gugeri Street | Ford | C 22 | Claremont Municipality | 1915 |
| Knight | G. C. | Gugeri Street | Ford | C 22 | Claremont Municipality | 1916 |
