| Jensen | F. J. | Pine-Ridge, Pingaring | FH0 and 46C, 102E | 1962 |
| Jensen | G. E. | 1086, 2109, Pingaring | 7GJ and 31B, 5E | 1962 |
| Jensen | Geo. J. | Commonage, Yalgoo | GJ0 | 1924 |
| Jensen | George J. | Commonage, Yalgoo | GJ0 | 1912 |
| Jensen | J. | Bunkunup, Borden | JE9 and 50A, 32C | 1962 |
| Jensen | J. P. | Dorakin Locs. 8594, 7387, 7364, Scrivener's Soak, E. Narrogin | 8PJ | 1912 |
| Jensen | J. P. | Dorakin Loc. 8594, 7387, 7364, Scrivener's Soak, E. Narrogin | 8PJ | 1924 |
| Jensen | J. P. | Wedin Hills, 14374, 13073 William Loc., Tollibin | JJ1 and 28C, 103A | 1962 |
| Jensen | Mrs Karen Aslang | Homerest, Capel | 8KA | 1924 |
| Jensen | R. H. | Inglewood, Tammin | 5RJ | 1912 |
| Jensen | R. H. | Inglewood, Tammin | 5RJ | 1924 |
| Jensen | Robt. A. | Roebourne | R2J | 1912 |
| Jensen | Robt. A. | Roebourne | R2J | 1924 |
| Jensen | T. E. & F. J. | Bullardoo Stud, Lot 169, Wongan Hills | TJ6 and 40A, 117B | 1962 |
| Jensen | W. & A. A. | Erinvale, Helena Valley | Q4U and 3C, 7E | 1962 |
| Jensen & Son | R. H. | Bullardoo and New Forrest Stations, Mullewa | GJ0 and 25A, 80C | 1962 |
| Jensen Bros. | - | Wandarri Station, Mt Magnet | WP7 and 80C, 5E | 1962 |
| Jenson | Jens P. | Denmark Meinde, Dowerin | PJ0 | 1912 |
| Jenson | Jens P. | Denmark Meinde, Dowerin | PJ0 | 1924 |
| Jenson | Martin | Denmark Loc. 396, Torbay Junction, Demark | 2MJ | 1926 |
| Jenzen | Ethel Maud | Sunny Grove, Gingin, Rockdale, Cunderdin | 2SV | 1924 |
| Jenzen | H. C. T. | Rockdale, Cunderdin | 8JZ | 1912 |
| Jenzen & Sons | S. V. R. | Rockdale, Cunderdin | 8JZ and 6C, 29E | 1962 |
| Jenzin | H. C. T. | Rockdale, Cunderdin | 8JZ | 1924 |
| Jepson | Ernest | Loc. 20273, Gabbin | XE5 | 1924 |
| Jermyn | Edgar | P. O. Yealering | 4ZJ | 1924 |
| Jervis | Frederick John | Clovelly Farm, Avon Loc. 14328, Lake Brown, via Nungarin | F9Q | 1925 |
| Jervis | Wiliam A. | Starve, Seven Days Road, Manjimup | WJ2 | 1927 |
| Jervis | Wm. Edwin | Culham, near Toodyay | 7XV | 1924 |
| Jespersen | T. | Dyebank, Nelson Loc. 11210/11211, Nannup | DY3 | 1962 |
| Jess | R. | 1264, Jerramungup | R7J and 42C, 117E | 1962 |
| Jess | W. | Locs. 9406,11981, 15416, Benjaberring | 5WJ and 15B, 110E | 1962 |
| Jesset | C.E. (Mrs) | Avon 18862, 18822-4-6, Corrigin | 0CJ and 11B, 23A | 1962 |
| Jessop | Mrs E. | Greenbushes Tinfield, Walter Street, Greenbushes | 9ET | 1924 |
| Jessop & Co. | L. | 618, Esperance | E4J and 6C, 23A | 1962 |
| Jessup | W. A. | Marmaling, Wagin | AX4 and 2C, 45E | 1962 |
| Jessup | Wm. | Bobakine Farm, Clackline, via Northam | 0JU | 1912 |
| Jessup | Wm. | Bobakine Farm, Clackline, via Northam | 0JU | 1924 |
| Jewell | Alice M. M. | Dent's Farm, Jacob's Well | JU5 | 1924 |
| Jeweller | J. | Harvey, A.A. 32, Waroona | UJ2 | 1962 |
| Jib Jib Station Co. | - | Jib Jib, Northampton | RD5 and 6A, 6B | 1962 |
| Jilley | J. R. | Nelson 2964-5-6, Kulikup | J9J and 12C, 113E | 1962 |
| Jilley | O. | Kallingup, Elgin | 0JY and 37C, 30A | 1962 |
| Jilley | R. | Glenora, Kulikup | 1AJ and 13B, 18A | 1962 |
| Jilley | R. & A. | Kulikup | 1AJ | 1927 |
| Jilley | W. | Brookdale, Elgin | 1WJ and 51F, 20D | 1962 |
| Jilley | Westgarth | Brookdale, Elgin Siding | 1WJ | 1928 |
| Jimba Jimba Station | - | Jimba Jimba Station, Gascoyne Junction | U0s and 6C, 18A | 1962 |
| Jingemarra Station | - | Jingemarra Station, via Yalgoo | B3L and 2C, 11A | 1962 |
| Job | F. | 16863 and 16858, Corrigin | FJ8 and 32C, 114E | 1962 |
