| P.M.G. Lines Training School | - | Dunreath, Guildford | PM6 and 24B, 21E | 1962 |
| Pabst | Sarah Fanny | Emu Farm, Doodlakine | M7P | 1924 |
| Pacak | J. | Lot 666, Bassendean | ZN1 | 1962 |
| Pache | J. B. & H. B. | Bellrock, via Kunjin | K4P | 1924 |
| Packard | E. & B. J. | Hay Loc. 882, Frankland River | 8GP and 25D, 18E | 1962 |
| Packard | John | Rockdale, Bruce Rock | 8PZ | 1924 |
| Packard | R. T. | Mount Kokeby | RP6 | 1912 |
| Packard | R. T. | Mt. Kokeby | RP6 | 1924 |
| Packard | W. J. & D. R. | Girrawheen, Katanning | P4Y and 17D, 104E | 1962 |
| Packham | F. | Locs. 10 and 15, Tammin | 0PX and 2C, 6E | 1962 |
| Packham | Frank | Locs. 10 and 15, Tammin North | 0PX | 1924 |
| Packham | I. F. & E. M. | Noonying and Mabaruk, Tammin | J5P and 2C, 110E | 1962 |
| Packham | John | Doongin Peak, Tammin | O1P | 1912 |
| Packham | John | Doongin Peak, Tammin | 1OP | 1924 |
| Packham | John, jun. | The Jungle Farm, Tammin | NP3 | 1924 |
| Packham & Son | T. | Doongin Peak, Tammin | 1OP and 51F, 28B | 1962 |
| Padbury | A. R. | Longleat, Kojonup | W4P and 22B, 38E | 1962 |
| Padbury | W. J. D. | Chapman, Chapman | WJ1 | 1912 |
| Padbury | W. J. D. | Chapman | WJ1 | 1924 |
| Padbury | Wm. | Rose Hill, Guildford | 2WP | 1912 |
| Padbury | Wm. | Rose Hill, Guildford | 2WP | 1924 |
| Paddock | C. A. | Gimlet Vale, Wyalkatchem | 3JM and 13D, 118E | 1962 |
| Paddon | Chas. | Nelson Loc, 1095, Manjimup | P5V | 1924 |
| Paddon | R. J. | Woodleigh, Deanmill | P5V and 37C, 9E | 1962 |
| Padgett | John R. | Hillview, Pickering Brook | 8PV | 1924 |
| Padley | Henry | Laughton, Aurthur River | 4PD | 1924 |
| Padman | H. L. G. | Hillcrest, Brookhampton | PB0 and 13C, 14E | 1962 |
| Padman | John W. | Brookhampton, Donnybrook | PX1 | 1912 |
| Padman | John W. | Brookhampton, via Donnybrook | PX1 | 1924 |
| Padman | L. R. & I. R. | Maleburn, Brookhampton | P1X and 49D, 18E | 1962 |
| Padman | V. A. | Burnside, Brookhampton | P1X and 3C, 15E | 1962 |
| Paech | A. R. & R. E. | Rannerdale, Manjimup | A4P | 1962 |
| Paganini | C. | Glenoran, Nelson Loc. 9185, Manjimup | CP1 and 51F, 103D | 1962 |
| Paganini | J. & R. | Wellington Loc. 1 Lots 2, 13, 16, Wokalup | JF9 and 32C, 35E | 1962 |
| Paganoni | B. P. | Mowrina, Spearwood | PP5 and 24B, 29A | 1962 |
| Page | A. J. | Mascot and Stockdale, West Pingelly | LP1 and 2C, 8A | 1962 |
| Page | Anu | Illillawa, Three Springs | 9PN | 1924 |
| Page | C. W. | Locs. 1916, 2099, 2420, 2142, 2917, 1859, Wannamal | U1Z and 5B, 38E | 1962 |
| Page | Ernest E. | Coorow, Cookernup | 4SN | 1927 |
| Page | F. | Mascot Farm, Pingelly | LP1 | 1912 |
| Page | F. | Mascot Farm, Pingelly | LP1 | 1924 |
| Page | Harry | Blocks 9259, 11698, Dowerin | P2D | 1912 |
| Page | Harry | Blocks 9259, 11698 Dowerin | P2D | 1924 |
| Page | J. A. | Glen Valley, Quindanning | P8E | 1928 |
| Page | J. A. | Glen Valley, Quindanning | P8E and 26B, 19E | 1962 |
| Page | J. E. | Loc. 443, Quindanning | 0EP and 120B, 19E | 1962 |
| Page | J. H. | Salt Springs, Quindanning | PE2 | 1912 |
| Page | J. H. | Salt Springs, Quindanning | PE2 | 1924 |
| Page | J. H. | The Dale, Newcarnie | 7DF | 1927 |
| Page | John | Homestead, Quindanning | PA2 | 1912 |
