| Langley | A. W. | Valhalla, Popanyinning | A8L | 1924 |
| Langley | E. M. & B. J. | Globe Hill, Brookton | H5L and 17C, 17A | 1962 |
| Langley | H. W. | Globe Hill, Brookton | H5L | 1912 |
| Langley | H. W. | Globe Hill, Brookton | H5L | 1924 |
| Langley | Jas. | Woodstock, Nampup | L9J | 1912 |
| Langley | Jas. | Woodstock, Nampup | L9J | 1924 |
| Langley | Jas. | Hall's Creek | LN6 | 1924 |
| Langley | Jessie | Dualling and Merino Downs | XO3 | 1924 |
| Langley | Marian | State Saw Mills, Pemberton | EL4 | 1926 |
| Langley | R. C. | Glen View, Loc. No. 834, Denmark | RL6 | 1962 |
| Langley | S. J. & E. J. | Avon Loc. 6308, 6562, 7855, 4357, 3029, 7113, 21140, Brookton | LY4 and 17B, 109A | 1962 |
| Langley | V. G. | Merino Downs, Nyabing | 3VL | 1924 |
| Langley | W. G. & N. L. | Hillcroft, Brookton | 9ED and 39C, 15E | 1962 |
| Langley & Son | V. G. | Kojonup 4960, 6160, 6165, Nyabing | 3VL and 44C, 8E | 1962 |
| Langley & Sons | C. B. | Birchmont, Pinjarra | BM4 and 8A, 27B | 1962 |
| Langley Bros. | - | Warwick Glen, Cowaramup | A8L and 34C, 36E | 1962 |
| Langmid | Alfred G. | Location 13658, Gnarming | L8A | 1924 |
| Langoulant & Atkinson | - | Perry's Run, Wanneroo | HL8 | 1912 |
| Langoulant & Atkinson | - | Perry's Run, Wanneroo | HL8 | 1924 |
| Langridge | B. C. & G. D. | Crawlea Pt. 2351, 1312, 875, Donnybrook | P6L and 16C, 26A | 1962 |
| Langridge | Barton | Mereworth Farm, Kenwick | 8LK | 1924 |
| Langridge | D. E. | Victoria 5748, Mullewa | 2DL and 107D, 28E | 1962 |
| Langridge | H. W. | Landridge's Farm, Watheroo | 6ZL | 1924 |
| Langridge | J. W. & E. V. | Williams Locs. 3874, 4416, Highbury | JL4 and 36A, 4C | 1962 |
| Langridge | M. E. (Mrs) | Victoria Loc. 5748, Mullewa | 9EL and 48A, 10B | 1962 |
| Langridge | T. A. | Braeside 230, 198, Donnybrook | 9XY and 18A, 42B | 1962 |
| Langridge Bros. | | Carlisle | 2DL | 1928 |
| Langsford | J. W. | Quairading | WV2 | 1924 |
| Langsford | S. H. | Worreoppin, Yoting | 1LT and 3E, 11D | 1962 |
| Langsford & Co. | E. W. | Mt. Pleasant, Quairading | WV2 and 84D, 11E | 1962 |
| Langsford & Hudson | V. F. & J. R. | 1972 and 2493, Wanneroo | L1H and 17A, 47B | 1962 |
| Langsford & Son | B. F. | The Ranche, Yoting | 1BF and 7B, 25E | 1962 |
| Lanigan | G. J. | Atunga, Frankland | 1GL and 6B, 3A | 1962 |
| Lanigan | Joseph P. | Mt. Lofty, New Norcia | 9NP | 1924 |
| Lanigan | Michael | Mount Mary, Mogumber | 1ML | 1912 |
| Lanigan | Michael | Mount Mogumber | 1ML | 1924 |
| Lanigan | R. P. | Mount Mary, Mogumber | RL2 | 1912 |
| Lanigan | R. P. | Mount Mogumber | RL2 | 1924 |
| Lanigan & Sons | M. | Mount Mary Farm, Mogumber | 1ML and 21D, 16E | 1962 |
| Lankeston | R. C. | Gracewald, Bridgetown | RL0 | 1912 |
| Lankeston | R. C. | Gracewald, Bridgetown | RL0 | 1924 |
| Lankstead | George | Group Settlement Block, No. 9067, c/o. Mr. Flack, Manjimup | GL3 | 1927 |
| Lannin | G. E. & J. L. | Western Downs, Lake Grace | GL2 and 49C, 17A | 1962 |
| Lannin | George | Moojerlup, Cookernup | 4SN | 1924 |
| Lannin | J. R. | Warraga, Donnybrook | 1LX | 1962 |
| Lansdell | C. W. | Mort. Park Pt. Loc. 5028, Tambellup | C8L and 8A, 28C | 1962 |
| Lansdell | Geo. H. | Cleomine Farm, Nungarin | 2LG | 1924 |
| Lansell | F. N. | Melrose and Scotia, Ravensthorpe | LQ0 | 1924 |
| Lapsley | Harry | Leonora | L4Y | 1924 |
| Lapthorn | F. J. | Ashburton, Onslow | J1U | 1912 |
