| Hopkinson | W. B. T. | Coyrup, Katanning | W2H | 1924 |
| Hopkinson & Cumming | - | Dookaling, Round Hill, via Moora | N9G | 1924 |
| Hopson | A. Jos. | Sunnyside, Lower Kalgan River | V2H | 1924 |
| Hopson | Percy Wm. | Hazel Hill, Denmark | 9XH | 1924 |
| Hopson | Thos. | Woodbine Farm, Mogumber | 6XO | 1924 |
| Hopwood | B . W . G . | Gnylbencubbing, Bencubbin | 0LU and 9D, 23E | 1962 |
| Hopwood | B. W. G. | Pine Farm, Mt. Marshall | 8LO | 1924 |
| Horan | Alex. I. | Ogilvie, via Geraldton | KH0 | 1924 |
| Horan | Kate | P.O. Doodlakine | KH0 | 1912 |
| Horan | W. & J. | Ox Home, Malcolm | 0IX | 1912 |
| Horan | W. & J. | Ox Home, Malcolm | O1X | 1924 |
| Horan | W. H. J. | Railway Station, Gingin | W6H | 1912 |
| Horan | W. H. J. | Railway Station, Gingin | W6H | 1924 |
| Horan Bros. | - | Glenorn, Mt. Malcolm | 0RN | 1912 |
| Horan Bros. | - | Oxendale, Kalgoorlie | AX8 | 1924 |
| Horbury | R. T. | Nambadilling, via Wickepin | H8O | 1924 |
| Hordacre | D . E . | Hay Loc. 731 ans Plant Loc. 6149, Tenterden and Woogenellup | DH8 and 120A, 4C | 1962 |
| Hordacre | J | Simla, Tenterden | 7EH and 3B,119E | 1962 |
| Hordacre | L . F . G . & I . J . | El Dorado, Tenterden | L9H and 50B, 107A | 1962 |
| Hordacre | L . G . | Jaffa, Tenterden | HZ6 and 21C, 18A | 1962 |
| Hordacre | O. E. | Watervale Farm, Tenterden | O5H | 1924 |
| Hordacre | T . L . | Hay Loc. 791, Tenterden | T2H and 8B, 110A | 1962 |
| Hore | D . S . & I . M . | Austinlea, Katanning | D7H and 20B, 23A | 1962 |
| Hore | Herbert Reuben | Woodbine, via Balingup | K2V | 1924 |
| Hore | R . J . | Woodbine, Balingup | K2V and 57F, 13B | 1962 |
| Horgan | J. C. | Red Forrest Farm, Kwelkan | V0H | 1924 |
| Horley | A . M . | Wrenbrook, Duranillin | AO8 and 2C, 41E | 1962 |
| Horley | A. J. | Moodiarrup, Arthur River | UH1 | 1912 |
| Horley | A. J. | Moodiarrup, Arthur River | UH1 | 1924 |
| Horley | E . | Red Gum Pool, Duranillin | UH7 and 32C, 25E | 1962 |
| Horley | G . C . | Bilyabah, Duranillin | T1F and 41D, 34E | 1962 |
| Horley | G. S. | Francania Farm, Dumbleyung | HY9 | 1912 |
| Horley | G. S. | Francania Farm, Dumbleyung | HY9 | 1924 |
| Horley | J . F . | Rosedale, Duranillin | FJ8 and 15A, 38C | 1962 |
| Horley | J. H. | Moodiarrup, Arthur River | UH7 | 1912 |
| Horley | J. H. | Moodiarrup, Arthur River | UH7 | 1924 |
| Horley | R . J . | Coomaroo, Boyup Brook | RH9 and 46C, 67A | 1962 |
| Horley | W . H . | The Grange, 6046, 6047, & 5785, West Popanyinning | 9FH and 35B, 8E | 1962 |
| Horley | W . H . & V . J . | Glen Murray, Duranillin | MQ9 and 28C, 12A | 1962 |
| Horley | Wm. F. | The Grange, Napping, Popanyinning | 5FH | 1912 |
| Horley | Wm. F. | The Grange, Napping, Popanyinning | 5FH | 1924 |
| Horling | H. H. | Block 11409, Totadjin, Hine's Hill | 8HG | 1912 |
| Horling | H. H. | Block 11409, Totadjin, Hines Hill | 8HG | 1924 |
| Horn | F . W . | Kilbirnie, Trayning | 9HN and 21B, 107E | 1962 |
| Horn | L . G . | Plant Loc. 5769, Albany | 9GH and 50C, 32E | 1962 |
| Hornby | E. C. | Icha Inkulu, Kojonup | V1A | 1912 |
| Hornby | E. C. | Icha Inkulu, Kojonup | V1A | 1924 |
| Hornby | F. I. | The Mistletoe, Balbarrup | DE9 | 1924 |
| Horne | A . L . & P . | Block 488, Wagin | H7Q and 28A, 38C | 1962 |
| Horne | C . W . | Loc. 1409, 450, 451, 446, 447, 448, Woodanilling | CH5 and 105A, 108B | 1962 |
