| Johnston | George | Seymour, Tenterden | X6G | 1924 |
| Johnston | H. A. | Kuminin, via Bruce Rock | 4UJ | 1924 |
| Johnston | H. C. | Blairmore, via Wickepin | 0VO | 1924 |
| Johnston | H. F. | Wandu, Near Swan View | 7FJ | 1912 |
| Johnston | H. W. | Keswick, Tambellup | JJ2 and 20B, 16A | 1962 |
| Johnston | Harley R. | Ringwood, Upper Preston | J5J | 1912 |
| Johnston | Harold | Merna Farm, Dangin | HJ4 | 1912 |
| Johnston | Harold | Merna Farm, Dangin | HJ4 | 1924 |
| Johnston | Henry D. | Glen Erna, Mount Erin | H0J | 1927 |
| Johnston | Herbert F. | Glen Iris, Bunbury | FH3 | 1924 |
| Johnston | I. P. & H. D. | Renegagles Refuge, Dardanup | H7J and 4D, 16E | 1962 |
| Johnston | J. | Cairn Hill, Burracoppin | QF3 and 19C, 46E | 1962 |
| Johnston | J. D. | Riverslea, Bokal | R1V and 53F, 2C | 1962 |
| Johnston | J. F. | Leschenault, Bunbury | 1FJ | 1912 |
| Johnston | J. P. & H. | Flowery Patch, Avon Locs. 24315, 24676, 19174, 26776, 20345, 20637, Cunderdin | 0XJ and 22D, 49E | 1962 |
| Johnston | J. P. & M. | Taunton Vale, Dardanup | TV0 and 54F, 20D | 1962 |
| Johnston | J. Q. | Serpentine A. A. Lot 55 Co. 50 Locs. 31, 32, 168, Mardelia | 0JQ and 25A, 3B | 1962 |
| Johnston | J. T. | Wandinna, Broome | 0NT | 1924 |
| Johnston | James | Broomridge Farm, Yallingup | V0J | 1924 |
| Johnston | Jas. W. | Carine, Wanneroo | 0XJ | 1924 |
| Johnston | John Albert | Aurora, Cranbrook | 1YQ | 1925 |
| Johnston | John Donald & Colin | Riverslea, Bokal Siding | 3JR | 1927 |
| Johnston | John E. | Bankhead, Dwellingup | Y6J | 1924 |
| Johnston | John G. | Avon Loc. 23151, Totadjin | XU4 | 1924 |
| Johnston | John Thos. | Carnot Bay Station, Broome | JH6 | 1924 |
| Johnston | John Thos. | Bullarora, Broome | QR6 | 1924 |
| Johnston | John Thos. | Bullarora, Broome | T0Z | 1924 |
| Johnston | Joseph | Yilagrn Loc. 155, Westonia | 2YQ | 1925 |
| Johnston | L. C. | 1950-1, Kojonup | L1J and 34B, 22A | 1962 |
| Johnston | L. F. | Boonmunya, Cranbrook | O7H and 53F, 10B | 1962 |
| Johnston | M. | Common, Nannine | M1J | 1912 |
| Johnston | M. A. I. | Lyndith Farm, Bridgetown | 2VJ | 1924 |
| Johnston | P. H. | Ruby Plains, Kimberley | H1J | 1912 |
| Johnston | P. H. | Kurengut, Nyabing | 6YJ | 1924 |
| Johnston | P. H. | Kojonup Loc. 5966, 6194/5, Nyabing | 6YJ and 33D, 40E | 1962 |
| Johnston | R. | Strathaven, Corrigin | 2RJ and 45A, 6B | 1962 |
| Johnston | R. F. | Juengenup, Bunbury | R9F and 117B, 43A | 1962 |
| Johnston | R. H. | Titicup, Kojonup Loc. 8261, Nyabing | J2Z and 40D, 109E | 1962 |
| Johnston | R. J. | Number 768, Westonia | RJ2 and 33C, 113E | 1962 |
| Johnston | R. P. | Loc. 792, 785, Westonia | RJ4 and 110A, 5B | 1962 |
| Johnston | S. | Ambleside, Armadale | 3FJ and 106E, 7B | 1962 |
| Johnston | S. B. | Glenmore, Dinninup | S0J and 41E, 5D | 1962 |
| Johnston | S. G. | Kniekinboro Dairy, Osborne Park | 7QG | 1924 |
| Johnston | S. G. | 5051, South Stirlings, via Mt. Barker | S6J and 32C, 19A | 1962 |
| Johnston | Sidney H. M. | Coburn Station, Hamelin Pool, via Carnarvon | 7OJ | 1924 |
| Johnston | V. R. | The Cascades, Greenbushes | 6EH | 1924 |
| Johnston | Victor Malcolm | Beulah, Wagin East | V8J | 1924 |
| Johnston | W. | Totadgin, via Merredin | J8U | 1924 |
| Johnston | W. & R. | Avon Loc. 20091, Babakine | ZJ5 | 1924 |
| Johnston | W. B. | Tin Area, Greenbushes | ZJ7 | 1924 |
