| Legge | F. MacD. | Plantagenet 6233, South Stirling. via Mt. Barker | FL3 and 117D, 120E | 1962 |
| Legge | H. E. | Purton, South Burracoppin | L2F and 16B, 102E | 1962 |
| Legge | J. J. E. | Jilbadji 145-152 and 173, South Burracoppin | J0L and 116B, 17A | 1962 |
| Leggerini | Joseph | Southern Cross | L8U | 1924 |
| Leggerini | M. J. | Nelson Locs. 12098-9, Manjimup | 2ML and 102E, 49B | 1962 |
| Leggett | E. G. | Cooree farm, Geetarning | 5GL | 1924 |
| Leggett | Walter K. | Location 9274, Jitarning Siding | LZ2 | 1924 |
| Leggo | R. | Morby Hill, Northam | X2L | 1924 |
| Leggo | Thomas | Trafalgar | U6L | 1924 |
| Leggoe | Ern. C. & Flora Z. | Kunmallup, Woodanilling | Z1Q | 1924 |
| Leggoe | J. | Tabelup, Arthur River | Z1Q and 39C, 40E | 1962 |
| Leggoe | J. & M. (Misses) | Querending, Arthur River | YP& and 3a, 45B | 1962 |
| Lego | J. E. & N. M. | Glen Vale, Cadoux | 3EL and 19E, 43C | 1962 |
| Lego | L. V. & P. R. | Williams Locs. Nos. 14948-9, Dumbleyung | WL0 and 11B, 119E | 1962 |
| Lehane | John | Strawberry | AL0 | 1924 |
| Lehlands & Co. | - | Alandale, Miling | 3AL and 115A, 38B | 1962 |
| Lehman | C. D. & N. | Laughing Waters, Karlgarin | EL1 and 31B, 115A | 1962 |
| Lehman | F. R. & E. M. | Mayfield, Miling | F5L and 11C, 80A | 1962 |
| Lehmann | C. A. | Colyinine, Bakers hill | 9CL | 1924 |
| Lehmann | Herman E. | Collie | LE9 | 1924 |
| Lehmann | L. M. | Quinn's, Nannine | EL1 | 1924 |
| Lehmann | R. & A. | Plantagenet 169, 132,667, 1400, 604, 1651, 1013, Cranbrook | KL6 and 29B, 6A | 1962 |
| Lehmann | R. E. | Warramuggan, Dukin | LR4 and 50D, 58F | 1962 |
| Lehmann | T. F. W. | H.F. 5120/74, Katanning | 6FL | 1924 |
| Leigh | Richard | Leighton Park, Ravensthorpe | QL6 | 1924 |
| Leight | G. | Blocks 10247, 10248, 10252, Dumbleyung | G6L | 1924 |
| Leighton | W. T. | 20806, Yelbeni | WL3 and 27B, 31E | 1962 |
| Leighton | Wm. James | Greenbushes | 9LN | 1924 |
| Leiper | J. W. & R. | Ben Lomond, Ravensthorpe | 4LP | 1924 |
| Leiper | R. B. & W. E. | Glenluce, Cowaramup | RL2 and 17B, 8E | 1962 |
| Leiper | Robert Bruce | Glenluce; Red Lake | RL2 | 1928 |
| Leiper & Baseden | - | M.H.L. 217, Homebiush, 220 Rosemere, Ravensthorpe | B7O | 1924 |
| Leipold | G. W. | Loc. 16, Gosnells | G0L | 1962 |
| Leipold | Geo. F. | Maybe, Ningara | 2GL | 1924 |
| Leipold | Wm. A. | Commonage, Kookynie | L9O | 1924 |
| Leishman | Hugh A. | Springmount Nanarup, Via Albany | YN7 | 1924 |
| Leishman | M. W. F. | Linton, Wolwooling | LL3 | 1912 |
| Leishman | M. W. F. | Linton, Wolwoling | LL3 | 1924 |
| Leishman | R. A. F. | Crooked Brook, Witchcliffe | 9LR | 1962 |
| Leishman | S. G. | Nos. 5290/91, Victoria Location, Buntine | 8LN | 1924 |
| Leishman | Wm. | Commongage, Belmont | YWL | 1912 |
| Leishman | Wm. | Commonage, Belmont | 7WL | 1924 |
| Leist Bros. | - | Bungay Farm, Watheroo | 5LE | 1924 |
| Leitch | Colin C. | Wellington Loc. 2559, Boyannup | 4QQ | 1925 |
| Leitch | Jas. A. & Wm. H. | St. Kilda Farm, Corrigin | YB7 | 1924 |
| Leitch | M. | Woodlands, Boyanup | 4QQ and 44C, 17E | 1962 |
| Lejeune & Sewell | - | Boodanoo Station, Yowergabbie Sising | 5LS | 1912 |
| Lejeune & Sewell | - | Boodanoo Station, Yoweragabbie Siding | 5LS | 1924 |
| Leman | Warner Teodor | Lake View Farm, Southern Cross | WL6 | 1926 |
| LeMesurier | C. J. R. | Vestaville, Serpentine | LV0 | 1912 |
