| Pollard & Dunn | - | Hiawatha | Ford Lorry | MR ● 5 | Marradong Road Board | 1926-27 |
| Pollaroad | J. E. | Kojonup | Maxwell | KO ● 106 | Kojonup Road Board | 1927-28 |
| Pollenilli | V. | Curtis Street, Osborne Park | Ford Truck | P ● 41 | Perth Road Board | 1924-25 |
| Pollinetti | V. | Curtis Street, Osborne Park | Ford Truck | P ● 41 | Perth Road Board | 1927-28 |
| Pollintti | V. | Curtis StreetOsboune Park | Ford Truck | P ● 41 | Perth Road Board | 1924-25 |
| Pollitt | J. | Normans, Toodyay | Ford | T ● 73 | Toodyay Road Board | 1925-26 |
| Pollitt | J. | Toodyay | Ford | T ● 73 | Toodyay Road Board | 1926-27 |
| Pollitt | J. | Nunyle | Ford | T ● 73 | Toodyay Road Board | 1927-28 |
| Polloch | Robert | Belka | Essex | MD ● 25 | Merredin Road Board | 1927-28 |
| Pollock | A. | Wokalup | Chevrolet | H ● 34 | Harvey Road Board | 1926-27 |
| Pollock | A. | Wokalup | Chevrolet | H ● 34 | Harvey Road Board | 1927-28 |
| Pollock | G. | Dugan Street | Studebaker 21 H.P. for Trade or Hire | KMC 7 | Kalgoorlie Municipal Council | 1922-23 |
| Pollock | G. | Dugan Street | Studebaker31 H.P. for Trade or Hire | KMC 10 | Kalgoorlie Municipal Council | 1922-23 |
| Pollock | G. L. | Irwin Street | Studebaker 20 H.P. | P 583 | Perth Municipality | 1919 |
| Pollock | James | Hannan Street | Studebaker for Trade or Hire | KMC 24 | Kalgoorlie Municipal Council | 1922-23 |
| Pollock | James | Hannan Street | Hupmobile for Trade or Hire | KMC 64 | Kalgoorlie Municipal Council | 1922-23 |
| Pollock | R. | Belka | Essex | MD ● 25 | Merredin Road Board | 1923-24 |
| Pollock | R. | Belka | Essex | MD ● 25 | Merredin Road Board | 1924-25 |
| Pollock | R. | Belka | Essex | MD ● 25 | Merredin Road Board | 1925-26 |
| Pollock | R. | Belka | Essex | MD ● 25 | Merredin Road Board | 1926-27 |
| Pollock | W. | 14 Francis Street, Perth | De Dion | 4481 | Metro Private Car | 1924-25 |
| Pollock | W. | 14 Francis Street, Perth | De Dien | 4481 | Metro Private Car | 1925-26 |
| Poloklinghorn | I. G. | Welbunging | Studebaker | MM ● 23 | Mount Marshall Road Board | 1925-26 |
| Pololaise | E. A. | 18 King George Street, Victoria Park | Chevrolet | 1352 | Metro Private Car | 1927-28 |
| Pomeroy | H. | 86 Piccadily Street | Jap 4½ H.P. Motorcycle | KMC 106 | Kalgoorlie Municipal Council | 1922-23 |
| Pomeroy | H. H. | 95 Quarry Street, Fremantle | Studebaker | 12396 | Metro Private Car | 1927-28 |
| Pomeroy | H. S. | 8 Woodbridge Terrace, Midland Junc. | Hupmobile | 1560 | Metro Private Car | 1924-25 |
| Pomeroy | L. | Cathedral Avenue, Geraldton | Ajax | GN 135 | Geraldton Municipality | 1926-27 |
| Pomeroy | L. A. | Geraldton | Overland | GN 112 | Geraldton Municipality | 1924-25 |
| Pomeroy | L. A. | Cathedral Avenue, Geraldton | Ash | GN 135 | Geraldton Municipality | 1927-28 |
| Pomery | H. A. | 16 Stephen Street, Guildford | Daimler | 1554 | Metro Private Car | 1923-24 |
| Pond | C. E. | Wandering | Rugby | CR ● 146 | Corrigin Road Board | 1925-26 |
| Pond | C. E. | Kondinin | Rugby | KN ● 38 | Kondinin Road Board | 1925-26 |
| Pond | C. E. | Kondinin | Rugby | KN ● 38 | Kondinin Road Board | 1926-27 |
| Pond | C. E. | Kondinin | Rugby | KN ● 38 | Kondinin Road Board | 1927-28 |
| Pond & Co | - | Durlacher Street, Geraldton | Essex | GN 21 | Geraldton Municipality | 1926-27 |
| Ponter | Mrs H. | Albany | Dodge | A 16 | Albany Municipality | 1927-28 |
| Ponton | H. I. | 28 Canterbury Terrace, Victoria Park | Ford | 13073 | Metro Private Car | 1926-27 |
| Ponton & Mason | - | Balladonia | Buick | NM ● 3 | Norseman Road Board | 1924-25 |
| Ponton & Mason | - | Balladonia | Buick | NM ● 4 | Norseman Road Board | 1925-26 |
| Ponton & Mason | - | Balladonia | Rugby | NM ● 8 | Norseman Road Board | 1925-26 |
| Ponton & Mason | - | Balladonia | Rugby | NM ● 9 | Norseman Road Board | 1925-26 |
| Ponton & Mason | - | Balladonia | Buick | NM ● 4 | Norseman Road Board | 1926-27 |
| Ponton and Mason | - | Balladonia | Buick | NM ● 2 | Norseman Road Board | 1923-24 |
| Pool | H. D. | 272 Albany Road, Victoria Park | F.N. 5 H.P. | P 338 | Perth Municipality | 1919 |
| Poole | Beatrice | 7 Rheola Street, West Perth | Oldsmobile | 139 | Metro Private Car | 1926-27 |
| Poole | Beatrice | 7 Rheola Street, West Perth | Oldsmobile | 139 | Metro Private Car | 1926-27 |
| Poole | C. | Perth | Pengeat 3½ H.P. Motorcycle | P 718 | Perth Municipality | 1915 |
| Poole | C. C. | Geelakin | Chevrolet Truck | WT ● 41 | Westonia Road Board | 1927-28 |
| Poole | Cyril | 838 Hay Street, Perth | Oakland | 1260 | Metro Private Car | 1923-24 |
