| Jackson | William H. | Yilgarn Loc. 632, Boddalin | 8DQ | 1925 |
| Jackson | Wm. | Dagety Downs, Gascoyne | R0T | 1912 |
| Jackson | Wm. | Carisbrook, Preston River | W9J | 1912 |
| Jackson | Wm. | Dalgety Downs, Gascoyne | R0T | 1924 |
| Jackson | Wm. | Loc. 5216, Pingelly | UJ4 | 1924 |
| Jackson | Wm. | Carisbrook, Preston River | W9J | 1924 |
| Jackson | Wm. Jno. | Finfall Farm, Oakabella | 4XJ | 1924 |
| Jackson & Flanigan | R. M. A. & T. H. | Kunamallup, Woodanilling | FJ7 and 25D, 109E | 1962 |
| Jackson & Hill | - | York Farm, Yealering | 0KE and 10C, 48E | 1962 |
| Jackson & Son | S. E. | Five Gums, Carnamah | 1EJ and 49C, 46E | 1962 |
| Jackson & Son | S. F. | Sunny Valley, Collie | FJ2 and 13B, 3E | 1962 |
| Jackson Bros. | - | Bamboo Creek | 2OJ | 1924 |
| Jackson Bros. | - | Yarra, Oakabella | 3JK and 34C, 38A | 1962 |
| Jackson Bros. | - | Oakabella, Oakabella | 4XJ and 16C, 5E | 1962 |
| Jacob | F. C. | Erikin Farm, Erikin | 1HJ and 18B, 10E | 1962 |
| Jacob | H. D. | Bolgart Estate, Bolgart | 1HJ | 1912 |
| Jacob | H. D. | Bolgart Estate, Bolgart | 1HJ | 1924 |
| Jacob | L. E. & E. M. | Mendel Lot 15, Mendel, via Mullewa | 7J1 and 27A, 46B | 1962 |
| Jacob & Son | E. T. | Allambee, Mendel, via Mullewa | EE1 and 42C, 6E | 1962 |
| Jacobi | E. J. E. | Fullerville, Dumbleyung | JA7 | 1912 |
| Jacobi | E. J. E. | Fullerville, Dumbleyung | JA7 | 1924 |
| Jacobs | A. | Swan Loc. 1572, 1874, East Bullsbrook | 8A7 and 56F, 28B | 1962 |
| Jacobs | C. C. | Hillview, Benjabbering | E6J | 1912 |
| Jacobs | C. C. | Hillview, Benjaberring | E6J | 1924 |
| Jacobs | F. & H. | Esperance 925, Esperance | FJ2 and 12B, 42E | 1962 |
| Jacobs | H. G. | Glen-Maureena Loc. 1589, Esperance | G9M and 16B, 113E | 1962 |
| Jacobs | Wm. | Commonage, Port Hedland | T7J | 1912 |
| Jacobs | Wm. | Commonage, Pingelly | T7J | 1924 |
| Jacobs & Son | - | Wokurna, Babakin | R3J and 19C, 49A | 1962 |
| Jacobson | E. | Loc. 11883, Trayning | 1QJ | 1924 |
| Jacobson | E. | Avon 11883-4, Trayning | 1QJ and 102B, 8E | 1962 |
| Jacobson | Jobshua | Mooney Street, Bayswater | J0S | 1928 |
| Jacoby | Agnes | Pall Mall, Culham | FU9 | 1924 |
| Jacoby | H. G. | Waverley, Brookton | J5Y | 1924 |
| Jacques | Frank Sydney | Normanhurst, Juropine Hill, Quairading | J8Q | 1924 |
| Jacques | Walter | Catchment Area, Sawyers' Valley | W0Z | 1924 |
| Jaekel | Henry | Loc. 339, Ongerup | H6X | 1924 |
| Jaekel & Son | E. F. | 288, 197, 284, 154, 153, 156, 145 Jarbunkenup, Ongerup | X6J and 106D, 10E | 1962 |
| Jaensch | A. J. | Roe Loc. 624, Newdegate | KQ6 | 1924 |
| Jaensch | A. J. | Roe 502, 1253, Newdegate | 1AJ and 32B, 13A | 1962 |
| Jaensch | A. J. | Springfield, Beverley | KQ6 and 12C, 50E | 1962 |
| Jaensch | A. L. | Ashfield, Lake Grace | 76E and 33E, 22D | 1962 |
| Jaensch | E. F. T. | Avon Bend, East Brookton | 2HW | 1912 |
| Jaensch | E. F. T. | Avon Bend, East Brookton | 2HW | 1924 |
| Jaensch | John F. | Spring Hill Farm, Narrogin | Z2J | 1924 |
| Jaeschke | P. E. H., R. G & C. F. | Penrhyn, Moora | 7EQ and 59F, 34C | 1962 |
| Jaeschke | P. E. M, R. G. & C. F. | Colray Farm, Wubin | 4JK and 36A, 50B | 1962 |
| Jaffer | - | Commonage, Port Hedland | 6AF | 1912 |
| Jaffer | - | Commonage, Port Hedland | 6AF | 1924 |
| Jaffer | A. J. | Wilpena Park, Mt Barker | A5J and 17C, 104E | 1962 |
