| 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 |
| Job | G. C. P. | Locs. 698, 699, 700, Narrogin | 8JN and 9B, 46E | 1962 |
| Job | H. W. | Blocks 2191, 2192, 2193, 2194, 2196, E. Narrogin | 8JN | 1912 |
| Job | H. W. | Blocks 2191, 2192, 2193, 2194, 2196, E. Narrogin | 8JN | 1924 |
| Jocik | J. & M. | Walerene, Toodyay | 2JJ and 116D, 33E | 1962 |
| Jockel | A. | Brook Farm, Bullsbrook | Y0J | 1924 |
| Jodrell | J. A. | Perth Shire Ave., Osborne Park | UM5 | 1962 |
| Joel & Humphries | - | Woodenup, via Kojonup | 0LK | 1924 |
| Johannson | E. & G. H. | Woolaway Farm, Gibson | 8DL and 19C, 115A | 1962 |
| Johansen | Andrew | Tabba Tabba Station, Pt. Hedland | 0JB | 1924 |
| Johansen | L. | Inering Block 15, Carnamah | 0QL | 1924 |
| Johanson | A. | Totadgin Block 11419, Hines' Hill | A0X | 1924 |
| John | G. G. | Naolimba, Perenjori | 0GJ and 34A, 45C | 1962 |
| John | Geo. D. | Pembroke, Gnowangerup | J8Y | 1924 |
| John | H. A. | Hamelin Pool via Carnarvon | V1J | 1912 |
| John | H. A. | Hamelin Pool, via Carnarvon | V1J | 1924 |
| John | M. A. | M.1328, Solstraaleo, Perenjori | 7XJ and113A, 33B | 1962 |
| John | Mary ellen | Ellenville, Rockingham | YK0 | 1924 |
| John | Mrs B. | Armadale | 6ON | 1924 |
| John | Paul | Millyvale, Marbellup | PL5 | 1924 |
| John | Thos. D. | Plantagenet Loc. 2334, Magilup, Salt River, Broomehill | T7N | 1924 |
| John | W. L. | Minivere, Salt River, East Broomehill | L7W | 1924 |
| John | William | Leonora | XJ3 | 1924 |
| John & Son | D & B. | Kalimna and The Junction, Boddington | K9U and 16C, 8E | 1962 |
| Johns | Francis R. | (Prospector), Cue | R4O | 1924 |
| Johns | Geo. N. M. | 12 Mile, via Meekatharra | 8QJ | 1924 |
| Johns | I.N. | Nelson Loc. 5497, Manjimup | 1AZ and 12B, 18E | 1962 |
| Johns | John | Commonage, Bunbury | J3Q | 1912 |
| Johns | John | Homestead, Collie | JJ6 | 1912 |
| Johns | John | Commonage, Bunbury | J3Q | 1924 |
| Johns | Miss M. | Kalgoorlie | XJ0 | 1924 |
