| Parkinson | F. H. | 374 Charles Street, Perth | Maxwell | 4672 | Metro Private Car | 1926-27 |
| Parkinson | J. | 56 Newcastle Street | B.S.A. 3½ H.P. Motorcycle | P 981 | Perth Municipality | 1919 |
| Parkinson | James | Kondut | International Truck | WB ● 241 | Wongan-Ballidu Road Board | 1927-28 |
| Parkinson | T. | Northam | Ford | N ● 25 | Northam Road Board | 1922-23 |
| Parkinson | T. | 594 Charles Street, Perth | Fiat Wagon | 718 | Metro Private Car | 1923-24 |
| Parkinson | T. | Northam | Ford | N ● 25 | Northam Road Board | 1923-24 |
| Parkinson | T. | Northam | Ford | N ● 25 | Northam Road Board | 1924-25 |
| Parkinson | T. | Northam | Ford | N ● 25 | Northam Road Board | 1925-26 |
| Parkinson | T. | Northam | Ford | N ● 25 | Northam Road Board | 1926-27 |
| Parkinson | T. | Northam | Ford | N ● 25 | Northam Road Board | 1927-28 |
| Parkinson | T. | - | Ford | N ● 82 | Northam Road Board | 1927-28 |
| Parkinson | T. H. | 374 Charles Street, Perth | Maxwell | 4672 | Metro Private Car | 1923-24 |
| Parkinson | T. H. | 374 Charles Street, Perth | Maxwell | 4672 | Metro Private Car | 1924-25 |
| Parkinson | T. H. | 374 Charles Street, North Perth | Maxwell | 4672 | Metro Private Car | 1927-28 |
| Parks | W. | Pingelly | Chevrolet | PN ● 27 | Pingelly Road Board | 1924-25 |
| Parks | W. | Pingelly | Chevrolet | PN ● 27 | Pingelly Road Board | 1925-26 |
| Parks | W. | Pingelly | Chevrolet | PN ● 27 | Pingelly Road Board | 1927-28 |
| Parks | Wm. | Pingelly | Ford 20 H.P. | PN ● 27 | Pingelly Road Board | 1922-23 |
| Parks | Wm. | Pingelly | Chevrolet | PN ● 27 | Pingelly Road Board | 1923-24 |
| Parks | Wm. | Pingelly | Chevrolet | PN ● 27 | Pingelly Road Board | 1924-25 |
| Parmham | W. G. | Mumberkine | Ford | GO ● 229 | Goomalling Road Board | 1927-28 |
| Parnell | F. G. | Tinkurrin | Ford | WK ● 137 | Wickepin Road Board | 1926-27 |
| Parnell | F. G. | Tinkurrin | Ford | WK ● 137 | Wickepin Road Board | 1927-28 |
| Parnell | R. S. | Gnowangerup | Dodge | GN ● 173 | Gnowangerup Road Board | 1927-28 |
| Parnell | R. T. F. | Glenroy, 7 Clarence Street, Mount Lawley | Chrysler | 258 | Metro Private Car | 1927-28 |
| Parnham | A. J. | Goomalling | Chevrolet | GO ● 121 | Goomalling Road Board | 1927-28 |
| Parnham | T. M. | Jennapullen | Dodge | GO ● 137 | Goomalling Road Board | 1925-26 |
| Parnham | T. M. | Jennapullen | Dodge | GO ● 137 | Goomalling Road Board | 1926-27 |
| Parnham | T. M. | - | Dodge | GO ● 195 | Goomalling Road Board | 1926-27 |
| Parnham | T. M. | Mumberkine | Dodge | GO ● 195 | Goomalling Road Board | 1927-28 |
| Parnut | Rodulf P. | Devon Road, Bassendean | Whippet | 11903 | Metro Private Car | 1927-28 |
| Parr | J. | 689 Beaufort Street, Perth | Chrysler | 11229 | Metro Private Car | 1926-27 |
| Parr | J. | 639 Beaufort Street, Perth | Chrysler | 11229 | Metro Private Car | 1927-28 |
| Parramore | F. C. | 82 Grant Street, Cottesloe | Gray | 6331 | Metro Private Car | 1926-27 |
| Parramore | F. C. | 82 Grant Street, Cottesloe | Gray | 6331 | Metro Private Car | 1927-28 |
| Parramore | R. H. | Meekatharra | Ford 30 H.P. | MK 5 | Murchison Road Board | 1915 |
| Parramore | R. H. | Meekatharra | E.M.F. 20 H.P. | MK 6 | Meekatharra Roads Borad | 1916 |
| Parrant | G. | Forbes Street | Willys 25 H.P. | P 913 | Perth Municipality | 1917-18 |
| Parrant | G. | 496 Newcastle Street | Willy's-Knight 40 H.P. | P 913 | Perth Municipality | 1919 |
| Parrant | G. | 496 Newcastle Street, Perth | Willys Knight | 866 | Metro Private Car | 1922-23 |
| Parrant | Geo. | 496 Newcastle Street, Perth | Willy's-Knight | 866 | Metro Private Car | 1923-24 |
| Parrant | Geo. | 15 Lawley Crescent, Mount Lawley | Willys-Knight | 866 | Metro Private Car | 1924-25 |
| Parrant | Geo. | 15 Lawley Crescent, Mount Lawley | Austin | 866 | Metro Private Car | 1925-26 |
| Parrant | Geo. | 15 Lawley Crescent, Mount Lawley | Austin | 866 | Metro Private Car | 1927-28 |
| Parrant | George | 15 Lawley Crescent, Mount Lawley | Austin | 866 | Metro Private Car | 1926-27 |
| Parrant | Harvey H. | 94 Murray Street, Perth | Hupmobile | 252 | Metro Private Car | 1923-24 |
| Parrant & Sons | G. | Forbes Street | Ford 20 H.P. | P 1161 | Perth Municipality | 1919 |
| Parrants Dyers Ltd | - | 6 Forbes Street, Perth | Ford | 1072 | Metro Private Car | 1923-24 |
| Parrants Dyes Ltd | - | 6 Forbes Street, Perth | Ford | 1072 | Metro Private Car | 1924-25 |
| Parrants Dyes Ltd | - | 6 Forbes Street, Perth | Ford | 1072 | Metro Private Car | 1925-26 |
