| Johnson & Co | P. | Hay Loc. 716, 2021, 2222, Mt Barker | 1RJ and 5D, 4E | 1962 |
| Johnson & Co. | A. A. | Mayhew, Kalannie | D0P and 29B, 71A | 1962 |
| Johnson & Co. | A. C. L. | Willow Gully, Northampton | 3MJ and 23E, 38C | 1962 |
| Johnson & Co. | P. | Hay Loc. 716, 2021, 2222, Mt Barker | 1RJ and 5D, 4E | 1962 |
| Johnson & Son | M. N. | Brandon, Dalwallinu | TJ1 and 13B, 26E | 1962 |
| Johnson & Sons | C. H. & E. G. | Brent-tor, Nungarin | N9J and 42A, 30B | 1962 |
| Johnson Bros | - | Plant. Locs. 249 and 455, Albany | D9U and 54F, 112D | 1962 |
| Johnson Bros. | - | Victoria Farm, Doodlakine | J3V | 1924 |
| Johnson Bros. | - | Plant. Locs. 249 and 455, Albany | D9U and 54F, 112D | 1962 |
| Johnston | A. | Common, Mt. Magnet | 1AJ | 1912 |
| Johnston | A. | Commonage, Northampton | A2J | 1912 |
| Johnston | A. (jnr.) | Wendouree, Kojonup 1991, 2228-7, 1931, 2379, 3717, 1933, Gnowangerup | KJ4 and 29D, 105E | 1962 |
| Johnston | A. C. | Lyndith, Bridgetown | 3JY and 32B, 27E | 1962 |
| Johnston | A. Robt. | Addison, Tambellup | JB0 | 1912 |
| Johnston | A. T. | Redcliffe Farm, Kulin E. Narrogin | 5AY | 1924 |
| Johnston | A. T. | Williams Loc. 15030, Boddington | TJ& and 34C, 21E | 1962 |
| Johnston | Albert | Charlton, Broomehill | 3JB | 1912 |
| Johnston | Albert Frank | Redburn, Dardanup | UJ9 | 1924 |
| Johnston | Alex. | Glenalbyn, Bridgetown | 6JV | 1912 |
| Johnston | Alfd. | Mt. Erin | AJ5 | 1912 |
| Johnston | Alfd. | Manarup, Albany | JX6 | 1912 |
| Johnston | Annie | Block 13774, P.O Wooroloo | 8AJ | 1912 |
| Johnston | Arthur | Niliawongup, Broom Hill Estate | NJ3 | 1912 |
| Johnston | Arthur | Niliawongup, Broome Hill Estate | NJ3 | 1924 |
| Johnston | C. | Bonnie Doon, Quairading | CJ0 and 36B, 10E | 1962 |
| Johnston | C. B. | Wandu, near Swan View | 7FJ | 1924 |
| Johnston | C. L. | 12646, 12717, 11592, 11678, Nyabing | 1CJ and 112A, 44B | 1962 |
| Johnston | C. W | Lyndett, Bridgetown | UX1 | 1912 |
| Johnston | C. W. | Lyndett, Bridgetown | UX1 | 1924 |
| Johnston | C. W. | Berringa, Wagin | 7CJ and 46C, 109E | 1962 |
| Johnston | Cameron | Bonnie Doon, Quairading | GJ0 | 1927 |
| Johnston | D. B. | Kuringup, Kojonup Locs. 8305, 7933, 5290, 6200, 6022, 5722, East Katanning | DJ7 and 43D, 25E | 1962 |
| Johnston | D. J. | Golf View, Mt. Yokine | JU7 | 1962 |
| Johnston | D. K. & W. G. | Glendale and Boginarup, Manjimup | M0O and 18B, 8A | 1962 |
| Johnston | D. N. | Riverside, Quellington, via York | 6NJ and 42A, 25B | 1962 |
| Johnston | David | Myrtle Vale, Markegin, via Pingelly | UJ7 | 1924 |
| Johnston | Dominic | Fitzgerald Loc. 258/9, Salmon Gums | 1DJ | 1927 |
| Johnston | Donald | Boonmulling, Greenhills | DJ0 | 1927 |
| Johnston | E. P. | Bellbeing, East Beverley | E1J | 1912 |
| Johnston | E. P. | Loc. 409, 453, Pingrup | R9J and 24A, 49B | 1962 |
| Johnston | Edward Jas. | Kendanora, Cranbrook | Q4J | 1924 |
| Johnston | Edwd. | Lakeside, Lakeside | EJ1 | 1912 |
| Johnston | Ernest C. | Nyola, Dangin | EJ1 | 1927 |
| Johnston | Frank | Commonage, Nannine | 5MF | 1912 |
| Johnston | Frank | Dardanup, Dardanup | FJ7 | 1912 |
| Johnston | Frank | Dardanup | FJ7 | 1924 |
| Johnston | G. de C. | Sussex 1860-1-3, Busselton | 7JN and 6B, 29A | 1962 |
| Johnston | G. E. | Fairlands, Sussex Loc. 1598, Margaret River | YF2 and 21A, 106B | 1962 |
| Johnston | G. G. | Weona Vale, Nyabing | 3JX and 53F, 30B | 1962 |
| Johnston | Geo. Ed. | Colombo Street, Victoria Park | 0GE | 1924 |
