| Jordan | Alfred & Alice | Swan Loc. 1522, Bullsbrook | JX0 | 1924 |
| Jordan | Catherine | Boyanninup, Broomehill | JX2 | 1912 |
| Jordan | G. | Dry Well, Quairading | 0OJ | 1924 |
| Jordan | Geo. M. | Fairbanks Farm, Dowerin | UJ5 | 1924 |
| Jordan | J. R. | Victoria Loc. 6906, Gutha | 6VY | 1924 |
| Jordan | J. S. S. | Grass Patch, Warridar, via Yalgoo | N4V | 1924 |
| Jordan | L. | Loc. 2794, 4695, Napier | Y2V | 1962 |
| Jordan | M. E. | Northstonia, Westonia | YV2 | 1924 |
| Jordan | R. L. | J28, Esperance | 7TJ and 1C, 26E | 1962 |
| Jordan | W. C | Coombome, Doodlakine | DJ9 | 1912 |
| Jordan | W. C. | Coombome, Doodlakine | DJ9 | 1924 |
| Jordan & Fagan | - | Dauri Creek, Carnarvon | QF7 | 1924 |
| Jordan & Son | - | Eddington, Corrigin | J8G and 17C, 25E | 1962 |
| Jordan Bros. | - | Yowergabbie Common, Mt. Magnet | J5X | 1924 |
| Jorgensen | C. E. | Lot 100-10, Plant. Loc. 27, Kendenup | C7J and 49C, 39A | 1962 |
| Jorgensen | E. | Nyui, Kendenup | KU1 | 1962 |
| Jorgensen | Neil | Mulgandine Station, Cooglegang | NJ0 | 1912 |
| Jorgenson | Neil | Mulgandine Station, Cooglegong | NJ0 | 1924 |
| Jose | C. | Glen Waverley, Corrigin | KJ7 and 38A, 6B | 1962 |
| Jose | D. C. & P. J. | Freshfields 5737, Albany | 2DJ and 8B, 109E | 1962 |
| Jose | N. S. | Allawah, Bakers Hill | J8A and 27D, 111E | 1962 |
| Jose | N. S. | Allawah, Bakers Hill | J8A and 27D, 11E | 1962 |
| Jose | R. T. | Dartee's Farm, Kunjin, via Wickepin | KJ7 | 1924 |
| Jose | W. H. | Mail Rock, Mt. Kokeby | H3W | 1912 |
| Joslin | Daniel | Gallop Street. South Fremantle | 6JD | 1912 |
| Joslin | Daniel | Gallop Street, South Fremantle | 6JD | 1924 |
| Joss | S. S. | A.1250, Eneabba, via Three Springs | SJ5 and 35B, 33E | 1962 |
| Joubert | L. P. | Slab Well, Toompup, via Gnowangerup | J0U and 29D, 84E | 1962 |
| Jouning | J. W. B. | Cobrico Farm, Avon Loc. 15483, 19949, Nangeenan | JJ8 and 37A, 42B | 1962 |
| Jow Suey Bow | - | Lissadel, East Kimberley | J8B | 1912 |
| Jow Suey Bow | - | Lissadel, Kimberley | J8B | 1924 |
| Jowett | G. A. | Nelson Loc. 11121, Manjimup | 2YS | 1962 |
| Jowett | Gorden Alec | Hill View, East Broome Hill | 4EQ | 1925 |
| Joy | G. | Wongamine via Northam | G0J | 1912 |
| Joy | G. | Wongamine, via Northam | G0J | 1924 |
| Joy | G. B. | Kyalami, Eneabba, via Three Springs | G6J and 46B, 18E | 1962 |
| Joy | Lindsay K. | Crathie, Kojonup | A9M | 1927 |
| Joy | Mrs C. K. | Kojonup Locs. 3640/55, 8711/55 12673/55, 15227/55 and 1353, East Katanning | CK2 | 1924 |
| Joy | Mrs. C. K. | Kojonup Locs. 3640/55, 8711/55, 12673/55, 15227/55 and 1353, East Katanning | CK2 | 1912 |
| Joy | T. | View Mont, Dumbleyung | OY3 and 50a, 46C | 1962 |
| Joy | Thos. | View Mont, Wishbone, via East Dumbleyung | OY3 | 1924 |
| Joy | V. P. | Kooline Station, Onslow | Q7X and 6B, 6E | 1962 |
| Joyce | A. | Spearwood, via Fremantle | QJ8 | 1924 |
| Joyce | A. F. & J. A. | 287-9, 914, Bindi Bindi | J1J and 71 B, 29E | 1962 |
| Joyce | A. F. & J. A. | 287-9, 914, Bindi Bindi | J1J and 71B, 29E | 1962 |
| Joyce | A. K. | Glensorsfield, Kukerin | TJ6 and 39B, 30E | 1962 |
| Joyce | B. T. & C. J. | Greenaway, Kukerin | GJ9 and 34B, 118A | 1962 |
| Joyce | Bridget | Bindy Bindy, Walebing | 9JJ | 1912 |
| Joyce | Bridget | Michael's Well, Walebing | 9JJ | 1912 |
| Joyce | Bridget | Bindy Bindy, Michael's Well, Walebing | 9JJ | 1924 |
