| Plester | A. | Farmer | Irwin | 1879 | WA Almanack |
| Plester | A. | Farmer | Irwin & Dongara | 1880 | Herald Almanack |
| Plester | A. | Farmer | Victoria District (Dongara & Irwin) | 1880 | WA Almanack |
| Plester | A. | Farmer | Irwin & Dongara | 1881 | Herald Almanack |
| Plester | A. | Farmer | Victoria District (Dongara & Irwin) | 1881 | WA Almanack |
| Plester | A. | Farmer | Irwin & Dongara | 1882 | Herald Almanack |
| Plester | A. | Farmer | Victoria Districts (Dongara & Irwin) | 1882 | WA Almanack |
| Plester | A. | Blacksmith | Irwin & Dongara | 1883 | Herald Almanack |
| Plester | A. | Blacksmith | Irwin & Dongara | 1884 | Herald Almanack |
| Plester | A. J. | Farmer | Victoria District (Greenough) | 1869 | WA Almanack |
| Plester | A. J. | Farmer | Victoria District (Greenough) | 1870 | WA Almanack |
| Plester | A. J. | Farmer | Victoria District (Greenough) | 1872 | WA Almanack |
| Plester | A. J. | Farmer | Irwin & Dongara | 1873 | Herald Almanack |
| Plester | A. J. | Farmer | Irwin & Dongara | 1874 | Herald Almanack |
| Plester | A. J. | Farmer | Victoria District (Greenough) | 1874 | WA Almanack |
| Plester | A. J. | Farmer | Irwin & Dongara | 1875 | Herald Almanack |
| Plester | A. J. | Farmer | Irwin & Dongara | 1875 | WA Almanack |
| Plester | A. J. | Farmer | Irwin & Donarra | 1876 | Herald Almanack |
| Plester | A. J. | Farmer | Victoria District (Dongara) | 1884 | WA Almanack |
| Plester | A. J. | Farmer | Irwin & Dongara | 1885 | Herald Almanack |
| Plester | A. J. | Farmer | Victoria District (Dongara) | 1886 | WA Almanack |
| Plester | A. J. | Farmer | Dongara | 1887 | WA Almanack |
| Plester | A. J. | Farmer | Dongara | 1888 | WA Almanack |
| Plester | A. J. | Farmer | Dongara | 1889 | WA Almanack |
| Plester | A.J. | Farmer | Victoria District (Irwin & Dongara) | 1876 | WA Almanack |
| Plester | J. | Wheelwright | Victoria District (Greenough) | 1873 | WA Almanack |
| Plester | S. | Storeman | Mingenew | 1897 | Witton's Directory |
| Plotz | Anton | Hairdresser | Kanowna | 1897 | Witton's Directory |
| Plumber | F. R. | Manager W.A. Apothecaries Co. | High Street, Fremantle | 1897 | Witton's Directory |
| Plummer | F. R. | | Nairn Street, Fremantle | 1897 | Witton's Directory |
| Plumstead | F. | Sharebroker | 3 Commercial Chambers, Hannan Street, Kalgoorlie | 1897 | Witton's Directory |
| Plumstead | F. A. & Co. | Sharebrokers | 10 Semaphore Chambers, Hannan Street, Kalgoorlie | 1897 | Witton's Directory |
| Plush | Mrs E, | Fruiterer | Bayley Street, Coolgardie | 1897 | Witton's Directory |
| Plush | W. | | Hardinge Street, Perth | 1897 | Witton's Directory |
| Plush | W. | Laborer | Renou Street, Coolgardie | 1897 | Witton's Directory |
| Plush | W. | | Christmas Mine | 1897 | Witton's Directory |
| Podmore | W. | | Parry Street, Perth | 1897 | Witton's Directory |
| Poellett | J. | Shepherd | Harding River | 1879 | Herald Almanack |
| Poellett | J. | Shepherd | Harding River | 1880 | Herald Almanack |
| Poellett | J. | Shepherd | Harding River | 1881 | Herald Almanack |
| Poellett | J. | Shepherd | North-West Coast (Harding River) | 1881 | WA Almanack |
| Pogler | John | Saddler | Perth | 1885 | Herald Almanack |
| Polain | C. J. & Co. | Architects & Patent Agents | Upstairs, Exchange Court, Saint George's Terrace, Perth | 1897 | Witton's Directory |
| Polak | - | Government Gardener | Perth | 1880 | WA Almanack |
| Polak | J. | Government Gardener | Perth | 1881 | WA Almanack |
| Polak | J. | Botanist | Perth | 1882 | WA Almanack |
| Polak | J. E. | | Fitzgerald Street, Perth | 1897 | Witton's Directory |
| Poland | H. | Carter | Perth | 1884 | WA Almanack |
| Poland | H. | Carter | Perth | 1888 | WA Almanack |
| Poland | H. | Carter | Perth | 1889 | WA Almanack |
