| Lapthorn & Wright | - | Mount Magnet | WL2 | 1912 |
| Lapthorn & Wright | - | Mt. Magnet | WL2 | 1924 |
| Lapthorne | F. J. | Ashburton, Onslow | J1U | 1924 |
| Lapworth | D. W. | 6644 Victoria Loc. Pintharuka | DL1 and 12A, 22C | 1962 |
| Lapworth | S. B. | 19163, 24899, 18447, Doodlakine | S8B and 10C, 106A | 1962 |
| Larard | A. D. | Glencairn, Three Springs | 2TL and 32C, 67A | 1962 |
| Larcombe | Emanuel | Camel Farm, Gunga, Via Coolgardie | 6LU | 1924 |
| Large | M. & J. E. | 11521, West Yorkrakine via Tammin | D8J and 80B, 10A | 1962 |
| Larke | G. F. & N. | Flowerdale, Corrigin | 6GL and 44D, 35E | 1962 |
| Larke | H. J. E. | Worlds End, Avon 17633, Corrigin | 0EL and 13A, 46C | 1962 |
| Larke | L. & H. | Carpe Diem, Corrigin | L0L | 1928 |
| Larke | L. C. & K. | Carpeniem, Corrigin | L0L and 16D, 33E | 1962 |
| Larke | Mary Ann | Wynola, Corrigin | NL8 | 1924 |
| Larke | P. W. | Cheviot Hills, Corrigin | YB5 | 1924 |
| Larke | Reginald | Ginmorrill, Nambadilling | 9RL | 1924 |
| Larke & Sons | H. W. | Carpe Areni, Nembadilling | YL5 | 1924 |
| Larke & Sons | R. | Rock View, Corrigin | RL9 and 12B, 11A | 1962 |
| Larkin | F. | Locs. 20313, 24239, 24270, 22075, 24880, 19247, Cunderdin | 4FD and 48B, 18E | 1962 |
| Larkin | H. G. & L. T. | Nelson Loc. 2060, Manjimup | LL9 and 56F, 114D | 1962 |
| Larkin | J. L. | Barham, Pt. Loc. 1741, Boyup Brook | X7L and 33A, 49B | 1962 |
| Larking | Richard | Pink Wells, Lawlers | LL8 | 1912 |
| Larking | Richard | Pink Wells, Lawlers | LL8 | 1924 |
| Larkins | H. G. | Walyurin Park, 92-Mile R.P.F., Via Wickepin | G5O | 1924 |
| Larkman | A. & W. | 9876, Coorow | AL2 and 16A, 40B | 1962 |
| Larkman | H. A. | Larkvale, Koorda | H7L and 6D, 111E | 1962 |
| Larney | Elizabeth | Johnston Street, Collie | LZ5 | 1924 |
| Larratt | Geo. C. | Melrose, Chittering | GL1 | 1912 |
| Larratt | Geo. C. | Melrose, Chittering | GL1 | 1924 |
| Larsen | C. | Government Paddock, Harvey | L6N | 1924 |
| Larsen | F. | H. F. 6178/78 & 11514/55, Minnievale via Dowerin | F5L | 1912 |
| Larsen | F. | H/F 6178/74, 11514/55, Minnivale | F5L | 1924 |
| Larsen | F. H. | Sussex Loc. 2079, 3741, Cowaramup | H4K | 1962 |
| Larsen | F. J. | Alphone Farm, Muradup, via Kojonup | FL9 and 18A, 35B | 1962 |
| Larsen | Frank | Norlup Brook, Kojonup | FL9 | 1912 |
| Larsen | Frank | Noradup Farm, Via Kojonup | FL9 | 1924 |
| Larsen | H. E. | Sunnyvale, Kojonup | WY2 and 13A, 26B | 1962 |
| Larsen | H. Senior | Moradup, Via Kojonup | LA8 | 1924 |
| Larsen | H., sen. | Moradup,, Kojonup | LA8 | 1912 |
| Larsen | Hans Peter | Sussex Loc. 1232, Vasse via Busselton | I2L | 1926 |
| Larsen | Hy. Ed. | Kilkenny, Kojonup | WY2 | 1912 |
| Larsen | Hy. Ed. | Kilkenny, Kojonup | WY2 | 1924 |
| Larsen | J. | Homerest, Capel | L4N | 1912 |
| Larsen | J. | Homerest, Capel | L4N | 1924 |
| Larsen | John H. | Brookside, Northham | JL5 | 1912 |
| Larsen | John H. | Brookside, Northam | JL5 | 1924 |
| Larsen | L. | Morowa | 4LN | 1924 |
| Larsen | P. C. | Catambo Farm, Chandalla | P6L | 1912 |
| Larsen | P. C. | Catambo Farm, Chandalla | P6L | 1924 |
| Larsen | Wm. | Kilkenny via Kojonup | 5WL | 1912 |
| Larsen | Wm. | Kilkenny via Kojonup | 6WL | 1912 |
