| Harwood | W. J. | Parkfield, Quindalup | W1V | 1924 |
| Harwood & Bowen | - | Avon Loc. 17119, Totadjin, via Merredin | 4BN | 1924 |
| Harwood & Sons | E. | Studland, Kendenup | UH1 and 14D, 56F | 1962 |
| Harzwan Uzonoe | Hayat Khan | Commonage, Lawlers | UH3 | 1912 |
| Haselden | Jas | Norman Well, Northampton | JH3 | 1912 |
| Haselden | Jas. | Norman Well, Northampton | JH3 | 1924 |
| Haseley Stud Pty Ltd | - | Haseley, Toodyay | A5H and 18B, 18E | 1962 |
| Hasell | Henry | Avon View, Toodyay | Y2L | 1924 |
| Hasen | P. | 6AM Hill, via Northam, Northam | TH3 and 21C, 43A | 1962 |
| Hasketh | S. I. | Avon Locs.5203, 8854, 7186, 5512, Pingelly | RW6 and 3C, 31E | 1962 |
| Haskett & Baker | - | Jackadda Swamp, North Beach Road, Osborne Park | K9K | 1924 |
| Haslam | W. S. | Coogabbie, Popanyinning | O7Z and 14A, 14C | 1962 |
| Hasleby | A. G. & M. L. | Mulga Springs, Northhampton | HY9 and 20B, 3E | 1962 |
| Hasleby | John R. | Northampton | 8HV | 1924 |
| Hasleby | Joy Rachael | Northampton | 4HQ | 1924 |
| Hasleby | L. J. | Victoria 7280, Northhampton | SJ6 and 3B, 7A | 1962 |
| Hasleby | R. H. | Aheoma, Victoria Locs 9865, 6195, 6620, Northhampton | 4VR and 53F, 111B | 1962 |
| Hasleby | T. F. W. | Victoria 10209, 10226, Eneabba via Three Springs | 1TH and 39B, 54F | 1962 |
| Hasluck | E. W. | Loc. 336 Peel Est, East Rockingham | 4HX | 1962 |
| Hasluck | L. O. | Bromley Estate, Midland Junction | 9HQ | 1924 |
| Hasluck Bros | - | Fairydale, Margaret River | 4KH | 1962 |
| Hassan | Goolam | Garden Area, Malcom | GO8 | 1924 |
| Hassan | Khan | Wiluna | HK9 | 1912 |
| Hassan | Khan | Wiluna | HK9 | 1924 |
| Hassat | Khan | Marble Bar | 8KH | 1912 |
| Hassat | Khan | Marble Bar | 8KH | 1924 |
| Hassel | A. S. B. & M. J. | Cooralong, Buckingham, via Collie | 2AM and 30B, 84A | 1962 |
| Hassel | A. W. B. | Glendale, East Pingelly | 0SV and 53F, 14D | 1962 |
| Hassel | J. & H. | Wylandra, Mukinbudin | 1LF and 84B, 12A | 1962 |
| Hassel | N. B. & B. Z. | Wirrabirra, North Dandalup | NH3 and 31E, 16B | 1962 |
| Hassel | R. B. & I. F. | Rosedale, Waddington | 1RH and 3B, 105A | 1962 |
| Hassel | W. A. | Warriup Station, via Albany | Y8A and 11C, 30E | 1962 |
| Hassel & Muir | - | Twertup and Carracerup via Broome Hill | 4WA | 1928 |
| Hassell | A. S. B. | Portree Station, Port Hedland | 5RP | 1925 |
| Hassell | A. Y. | Albany | AH1 | 1912 |
| Hassell | A. Y. (Exrs. of Estate of) | Warrinupn Station, Plantagenet | Y8A | 1924 |
| Hassell | Edmund A. | Jarramongup, Plantagenet | AT1 | 1924 |
| Hassell | H. W. | Cordinup, Cape Riche | UV1 | 1925 |
| Hassell | J. | Madgenup and Carracerrup, Broomhill | 4WA | 1912 |
| Hassell | Jock | Oaklands, E Norragin | 4WA | 1912 |
| Hassell | Jock | Madgedup and Carracerrup, Broome Hill | 4WA | 1924 |
| Hassell | Kidd | Milli Milly, Murchison | MM5 | 1912 |
| Hassell & Kidd | (AdMrs est. McKellar) | Milly Milly, Murchinson | MM5 | 1924 |
| Hassen | J. W. | Springfield, Toodyay | 7SS and 10B, 22A | 1962 |
| Hasset | C. A. | Avon Locs. 18751, 18654, 16540, 5712, 11832, 11986,16049, East Pingelly | CA7 and 44D, 111E | 1962 |
| Hasset | C. G. & V. E. | Avon 17452, Corringin | HC9 and 19B, 115A | 1962 |
| Hasset | J. M. | Jeanelen, Gnowangerup | H4Q and 38B, 119E | 1962 |
| Hasset | R. | Loc. 18756, Corrigin | H0R and 1C, 112A | 1962 |
| Hasson | E. A. | Melbourne 3205, Balli | H8N and 43A, 9B | 1962 |
| Hasson | E. G. | Blocks 23 - 41, Norman Estate, Tooday | HV0 | 1912 |
