| Hawkins & Hawkins | - | Killara, Bencubbin | UV9 | 1924 |
| Hawkins & Reeves | - | Epping Vale Farm, Baandee | 8RE | 1912 |
| Hawkins & Reeves | - | Epping Vale Farm, Baandee | 8RE | 1924 |
| Hawkins & Walsh | - | Maitland Farm, Ballidu | 0YY | 1924 |
| Hawksley | R. M. | Westlands, Narrogin | HO8 and 43B, 26E | 1962 |
| Hawksley | Thos. Edwin | Eddinville, Highbury | tx5 | 1924 |
| Hawksley Bros. | - | Fairview and Monkopen, Balkuling | TY5 and 29E, 120D | 1962 |
| Hawley | Alexander Richard | Beresfordale, Graball, Narembeen | A1H | 1926 |
| Hawley | E. V. | Loc. 19297 and 19200, Narembeen | Y7V | 1924 |
| Hawley | J. D. & A. G. | Plantagenet Locs 397, 713, 6865, Albany | H6A and 108D, 32A | 1962 |
| Hawley | R. P. | 919, 813, 4541, 5935, Mt Barker | TY7 and 20B, 24E | 1962 |
| Haworth | James C. | Radium Street, Queen's Park | 7JH | 1927 |
| Hawser | G. B. | Lot 2 Loc. 3605, Herne Hill | BH4 and 17D, 3E | 1962 |
| Hawser | J. F. & J. | Loc. 10 Lots 67 and 68, Herne Hill | FH2 and 45B, 10F | 1962 |
| Hawter | C. | Raluanda, Mullalyup | HH4 and 53F, 11D | 1962 |
| Hawter | J. | Blackwood, Mullalyup | 7JH | 1912 |
| Hawter | J. | Blackwood, Mullalyup | 7JH | 1924 |
| Hawter | L. C. | Plantagenet 4938, Albany | L5H and 17B, 33E | 1962 |
| Hawter Bros. | - | Hawterville, Mullayup | 7JH and 20D, 58F | 1962 |
| Hawthorn | John Thoumas | Hill View, Kendenup | 0JH | 1928 |
| Hawthorn | W. B. | Munyantine, Darkan | YS7 and 31B, 14E | 1962 |
| Hawthorn | W. J. | Wilgie Hills, Dalwalinnu | 6HD | 1912 |
| Hawthorne | Fred. | Grass, Burracoppin | H9F | 1924 |
| Hawthorne | W. D. | Ercildoune, East Brookton | W8D | 1912 |
| Hawthorne | W. D. | Ercildoune, East Brookton | W8D | 1924 |
| Hay | Agnes C. | Dandarragan, Dandarragan | C0V | 1912 |
| Hay | Agnes C. | Dandarragan | C0V | 1924 |
| Hay | D. | Hay 2058, Rocky Gully | DH5 and 109B, 34A | 1962 |
| Hay | E. J. | Euadrah, Wagin | W7H and 115A, 10C | 1962 |
| Hay | J. C. Drummond | Lo Paz, Kalgan River | 9DH | 1912 |
| Hay | J. W. | Dairy Farm, Manjimup | 4HY | 1962 |
| Hay | L. E. | Bunbury Common, South Bunbury | 4LH | 1912 |
| Hay | L. E. | Bunbury Common, South Bunbury | 4HH | 1924 |
| Hay | Laura Annie | Moora | CV4 | 1924 |
| Hay | Marshall | Wodgina Tinfields, Wodgina P.O. | 6MW | 1912 |
| Hay | Marshall | Wodgina Tinfields, Wodgina P. O. | 6MW | 1924 |
| Hay | William | Albany Road, Cannington | 8AY | 1924 |
| Hay & Overhue | - | Nulla Nulla, via Wyndham | 0ZD | 1924 |
| Hay & Sons | - | Y- noo, Buarrcoppin | HS9 | 1912 |
| Hay & Sons | - | Y-noo, Burracoppin | HS9 | 1924 |
| Hay & Sons | J. D. | Weedlands, Lowden | 7HY and 39B, 8A | 1962 |
| Hayal | G. A. | Watheroo | QH6 | 1924 |
| Hayden | J. T. | Frazers Farm (Lot 210), Holyoake | JH8 and 14E, 9B | 1962 |
| Hayden | Jas. | Munbinia, Yalgoo | 1UH | 1912 |
| Hayden | Jas. | Munbinia, Yalgoo | 1UH | 1924 |
| Hayden | W. F. | Haydens Farm, Roelands | U0Y | 1924 |
| Hayden | W. J. | Haydoo, Gabbin | 6XU | 1924 |
| Hayden | Wm. | Wyndham | OS5 | 1924 |
| Haydock | Henry | Donnelly River, Manjimup | V0K | 1924 |
| Haydock | J. | Locs. 63, 72, 79, Forrestdale | V0K | 1962 |
