| Hinkley | B. R. | Relroy, Block 17 Mahogany Creek, Mundaring | BR4 and 20E, 16D | 1962 |
| Hinkley | Chas. Arthur | Wandin, Gnowangerup | N7G | 1924 |
| Hinkley | D. A. | Four Gums, Gnowangerup | DA9 and 16D, 12E | 1962 |
| Hinkley | E. | Nevada, Gnowangerup | EH4 and 16B, 109E | 1962 |
| Hinkley | Geo. | Hilltop Farm, South Tammin | UK7 | 1924 |
| Hinkley | L. C. | Wandin Farm, Gnowangerup | N7G and 9D, 14E | 1962 |
| Hinkley | R. H. | Loc. 6325, Gnowangerup | RN8 | 1924 |
| Hinkley | Robt. | Tammin | ZH9 | 1924 |
| Hinkley | Sharah Ann | Ashby, Gnowangerup | Q1H | 1924 |
| Hinkley | V. G. | Wandin, Gnowangerup | H5Y | 1912 |
| Hinkley | W. A. | Walal, Gnowangerup | WA8 and 14B, 42E | 1962 |
| Hinkley | W. Robt. | Carinya, Gnowangerup | H9Q | 1924 |
| Hinkley | W. W. | Ashley, Gnowangerup | YIH | 1912 |
| Hinkley | W. W. | Ashley, Gnowangerup | Y1H | 1924 |
| Hinkley Bros. | - | Wandin and Morrell Dale, Quairading | H5Y and 35D, 28E | 1962 |
| Hinsley | E. A. & H. | Hilltop Farm, Tammin | UK7 and 58F, 21D | 1962 |
| Hinson | C. H. | Sherley, Warren Road Nannup | NH9 | 1924 |
| Hinton | E. | Pleasant Grove, Mandurah | AE3 | 1912 |
| Hinton | E. | Pleasant Grove, Mandurah | AE3 | 1924 |
| Hinton | T. H. | Sussex 2716, Forest Grove | TH7 | 1962 |
| Hinton Farm | Co. | Hinton, Geraldton | H5G and 19A, 35B | 1962 |
| Hipper | B. D. | Sheoaks, Northampton | 0BH and 21B, 36E | 1962 |
| Hipper | C. L. | Bendhu, Isseka | OHC and 39D, 43E | 1962 |
| Hipper | H. | Wundi Farm, Northampton | 5HY | 1912 |
| Hipper | H. | Wandi Farm, Northampton | 5HY | 1924 |
| Hipper | Wm. | Wattle Farm, Northampton | 0HR | 1912 |
| Hipper | Wm. | Wattle Farm, Northampton | 0HR | 1924 |
| Hipper & Co. | - | Indialla, Nabawa | HC5 and 80B, 5E | 1962 |
| Hird | Thos. | Melrose Farm, Cunderdin | HZ1 | 1912 |
| Hird | Thos. Jos. | Melrose, Cunderdin | 1TH | 1912 |
| Hird | Thos. Jos. | Melrose, Cunderdin | 1TH | 1924 |
| Hird | Thos. Jos. | Melrose, Cunderdin | HZ1 | 1924 |
| Hird | W. J. | Avon Loc. 2218, Cunderdin South | UX7 | 1924 |
| Hird & Sons | D. M. | 249, Cunderdin | HZ1 and 58F, 8D | 1962 |
| Hird Bros. | - | Dumbleyung | BH0 | 1924 |
| Hirsch | A. S. & A. E. | Gnarlbini, Latham | EH0 and 21E, 44C | 1962 |
| Hirschaner | E. | Manna Farm Perenjori | KE9 | 1924 |
| Hirshfeld | T. J. | M. 1725, yericoin | LH9 and 13D, 106E | 1962 |
| Hirsohn | L. | Turkey Creek, | LH7 | 1912 |
| Hirsohu | L. | Turkey Creek | LH7 | 1924 |
| Hiscock | Arthur | Bulga, Albany Road, Cannington | 1AH | 1928 |
| Hiscock | Herbert S. | Nelson Loc. (Springvale), Dinninup | 9KD | 1925 |
| Hiscox | Geo. | Grandstand Road, Belmont | B1O | 1924 |
| Hiscox | Geo. Jas. | Rosedale, York | JH2 | 1912 |
| Hiscox | Geo. Jas. | Rosedale, York | JH2 | 1924 |
| Hiscox | Lilly | Grove Farm, Belmont | L0H | 1924 |
| Hiscox | Lily | Grove Farm, Belmont | L0H | 1912 |
| Hiscox & Son | | Aloma, Gabbin | 2HX and 47A, 17B | 1962 |
| Hislop | F. K. | Lake View, Katanning | 0FK and 17D, 113E | 1962 |
| Hitchcock | A. H. | Malabaine, Northam | H6K and 37B, 22A | 1962 |
