| Pailthorpe | V. D. | Kojonup | Pontiac | KO ● 153 | Kojonup Road Board | 1927-28 |
| Paine | J. D. | Kalamunda | Chevrolet Truck | DR ● 40 | Darling Range Road Board | 1927-28 |
| Paine & Sons | G. | Kojonup | Chevrolet Truck | KO ● 169 | Kojonup Road Board | 1927-28 |
| Pains | S. | Wellington Mills | Ford Lorry | DA ● 47 | Dardanup Road Board | 1925-26 |
| Pains | S. | Wellington Mills | Ford Lorry | DA ● 47 | Dardanup Road Board | 1926-27 |
| Pains | S. | Wellington Millls | Ford Lorry | DA ● 47 | Dardanup Road Board | 1927-28 |
| Painter | A. | East Wagin | Studebaker | W ● 48 | Wagin Road Board | 1925-26 |
| Painter | A. | East Wagig | Studebaker | W ● 48 | Wagin Road Board | 1926-27 |
| Painter | A. | East Wagin | Studebaker | W ● 48 | Wagin Road Board | 1927-28 |
| Painter | Alexander | Wagin | Studebaker | W ● 48 | Wagin Road Board | 1922-23 |
| Painter | Alexander | Wagin | Studebaker | W ● 48 | Wagin Road Board | 1923-24 |
| Painter | Alexander | Wagin | Studebaker | W ● 48 | Wagin Road Board | 1924-25 |
| Painter | T. | 29 Angove Street | Ford 20 H.P. | P 1205 | Perth Municipality | 1919 |
| Painter | T. | Mundaring | Ford | GE ● 18 | Greenmount Road Board | 1923-24 |
| Painter | T. | Mundaring | Ford | GE ● 40 | Greenmount Road Board | 1924-25 |
| Painter | T. D G. | Mundaring | Rugby | GE ● 41 | Greenmount Road Board | 1927-28 |
| Painter | T. D. G. | Mundaring | Dodge | GE ● 41 | Greenmount Road Board | 1924-25 |
| Painter | T. D. G. | Mundaring | Dodge | GE ● 41 | Greenmount Road Board | 1925-26 |
| Painter | T. D. G. | Mundaring | Dodge | GE ● 41 | Greenmount Road Board | 1926-27 |
| Painter | T. R. | Mundaring | Ford Truck | GE ● 18 | Greenmount Road Board | 1924-25 |
| Painter | William | Wagin | Dodge | W ● 33 | Wagin Road Board | 1922-23 |
| Painter | William | Wagin | Dodge | W ● 33 | Wagin Road Board | 1923-24 |
| Painter | William | Wagin | Dodge | W ● 33 | Wagin Road Board | 1924-25 |
| Painter | William | East Wagin | Dodge | W ● 33 | Wagin Road Board | 1925-26 |
| Painter | William | East Wagin | Dodge | W ● 33 | Wagin Road Board | 1926-27 |
| Painter | William | East Wagin | Dodge | W ● 33 | Wagin Road Board | 1927-28 |
| Paisley | Mrs Dorothy | 21 Alban Street, Mount Lawley | E.M.F. | 424 | Metro Private Car | 1923-24 |
| Palandri | A. F. | Busselton | Dodge | BN 64 | Municipality of Busselton | 1925-26 |
| Palandri | A. F. | Busselton | Dodge | BN 64 | Municipality of Busselton | 1927-28 |
| Palasis | A. J. | Manjimup | Ford Truck | WA ● 242 | Manjimup Road Board | 1927-28 |
| Palatine Ass Co Ltd | - | Saint George's Terrace, Perth | Fiat | 8886 | Metro Private Car | 1926-27 |
| Palatine Assn. Co Ltd | - | Saint George's Terrace, Perth | Fiat | 8886 | Metro Private Car | 1925-26 |
| Palatine Assn. Co Ltd | - | Saint George's Terrace, Perth | Fiat | 8886 | Metro Private Car | 1927-28 |
| Palbish | N. T | Williams | Ford | WL ● 74 | Williams Road Board | 1926-27 |
| Palendri | A. F. | Busselton | Dodge | BN 64 | Municipality of Busselton | 1926-27 |
| Palethorpe | Jessie | Beatty | Ford Lorry | MW ● 55 | Mullewa Road Board | 1925-26 |
| Palethorpe | Jessie | Beatty | Ford | MW ● 55 | Mullewa Road Board | 1926-27 |
| Palethorpe | Jessie | Beatty | Ford | MW ● 55 | Mullewa Road Board | 1927-28 |
| Paletti | J. | Cue | Chevrolet Truck | CD ● 56 | Cue-Day Dawn Road Board | 1927-28 |
| Palfrey | A. | Wubin | Chevrolet | DL ● 139 | Dalwallinu Road Board | 1926-27 |
| Palfrey | A. | Buntine | Chevrolet | DL ● 139 | Dalwallinu Road Board | 1927-28 |
| Palfrey | A. V. | Wubin | Dodge | DL ● 183 | Dalwallinu Road Board | 1927-28 |
| Palfrey | W. | Buntine | Chevrolet | DL ● 96 | Dalwallinu Road Board | 1925-26 |
| Palfrey | W. | Buntine | Chevrolet | DL ● 96 | Dalwallinu Road Board | 1926-27 |
| Palfrey | W. G. | Buntine | Oakland | DL ● 12 | Dalwallinu Road Board | 1927-28 |
| Palin | R. | Yale Road, Cannington | Ford | J ● 1 | Jandakot Road Board | 1923-24 |
| Palin | R. | Canning Vale | Chevrolet | GS ● 23 | Gosnells Road Board | 1924-25 |
| Palin | R. | Yale Road, Cannington | Ford | J ● 1 | Jandakot Road Board | 1924-25 |
| Palin | R. | Yale Road, Cannington | Ford | J ● 1 | Jandakot Road Board | 1924-25 |
| Palin | R. | Canning Vale | Chevrolet | 8642 | Metro Private Car | 1925-26 |
