| Longmuir | J. & N. | 2153-7, 2201, 2155, 1150, 2459, Gabbin | J7L and 4C, 110E | 1962 |
| Longmuir | R. M. | Ninghan Loc. 799, 1234, 3444, Koorda | 0RL and 40B, 84E | 1962 |
| Longson | E. W. | Misterbee, Mandogalup | WL5 and 1117D, 71E | 1962 |
| Longyear | W. J. | Avon 2129, 6296-7, 6504, 8651-2, 9172, 10494, 10699, 11246, York | WL4 and 24D, 119E | 1962 |
| Lonmere Grazing Co. | - | Lonmere, Mandurah | 9KT and 84C, 10E | 1962 |
| Lonsdale | S. (jnr.) | 16656, Bruce Rock | S4L and 7B, 112E | 1962 |
| Lonsdale | Stanley | Sunderland, Bruce Rock | LK4 | 1924 |
| Look | H. W. | Momallella Station, Nullagine | L1T | 1912 |
| Look | H. W. | Mamalanna, Nullagine | L1T | 1924 |
| Look | Henry William | Mamalanna, Nullagine | 1LK | 1924 |
| Look | J. S. | Taranda, Waroona | LK5 | 1962 |
| Look | Robin Wm. | Mamalanna, Nullagine | R2Z | 1924 |
| Looke | I. H. J. | Town Lots 10-16, Mingegew | 7XL | 1962 |
| Loon | Daniel Yook | Fitzroy River, Derby | D5L | 1924 |
| Lord | A. B. | Bowgada | LO7 | 1925 |
| Lord | A. P. & D. K. E. | 20224, Konnongorring | XL3 and 107B, 32A | 1962 |
| Lord | C. E. (Mrs) | Albany and Gosnells Road, Gosnells | C7E | 1962 |
| Lord | C. J. & E. E. | 1199, 1212, Lake Varley, via Newdegate | C9L and 16C, 50A | 1962 |
| Lord | D. G. | Fieldhouse Chapman Hill Road, Busselton | 4YE and 25B, 27E | 1962 |
| Lord | F. N. (Mrs) | Warrick Farm, Goomalling | 8LF and 31B, 44E | 1962 |
| Lord | Fred James | Lakeside, Oak Park, Goomalling | 8LF | 1924 |
| Lord | G. A. | Lake Side Farm, Goomalling | G7L and 109A, 33B | 1962 |
| Lord | H. E. | Misty Glen, Eastbrook, via Manjimup | 7HL | 1962 |
| Lord | J. E. | Moonta, Pinjarra | 0LX and 46C, 106A | 1962 |
| Lord | J. H. G. & M. | Burnside, No. 1 Block, Wongoondy, via Mullewa | J7L and 18D, 3E | 1962 |
| Lord | J. R. D. | Nairnup Station, Ravensthorpe | O6U | 1962 |
| Lord | James R. D. | Gnowangerup | O6U | 1925 |
| Lord | Joseph | Goomalling, Gomalling | O20 | 1912 |
| Lord | Joseph | Goomalling | O2O | 1924 |
| Lord | Lionel James | Gunalling, Northam | Z4J | 1924 |
| Lorden | T. H. | Location 3042, Kojonup | T8L | 1924 |
| Lorenz | E. M. | Loc. 529, Byford | LZ1 | 1962 |
| Loring | A. G. | Farm A.284, War Service Land Settlement, Denmark | LG7 | 1962 |
| Lorner | B. | Lakeside, Baandee | BL4 | 1912 |
| Lorner | B. | Lakeside, Baandee | BL4 | 1924 |
| Lorrain | N. | Blocks 20527 / 55, 10583 / 74, 27673 / 55, 27674 / 55, Korrelocking | NL3 | 1912 |
| Lorrain | N. | Blocks 20527/55, 10523/74, 27673/55, 27674/55, Korrelocking | NL3 | 1924 |
| Lorraine | Wm. Robt. | The Piggery, Bullfinch | L4O | 1924 |
| Loton | C. V. | Dewsbury Park, Kellerberrin | L2B and 20C, 56F | 1962 |
| Loton | E. T. | Belvoir, Upper Swan | BV4 | 1927 |
| Loton | E. W. | Enterprise Farm, Popanyinning | O7Z | 1924 |
| Loton | Ernest W. | Belvoir, UpperSwan | BV4 | 1924 |
| Loton | H. T. | Wendourie, Kojonup | HT1 and 14B, 33E | 1962 |
| Loton | Wm. Thorley | Spring Hill, Northam | LT1 | 1912 |
| Loton | Wm. Thorley | Belvior, Upper Swan | LT1 | 1912 |
| Loton | Wm. Thorley | Spring Hill, Northam; Belvoir, Upper Swan | LT1 | 1924 |
| Loton & Sons | E. T. | Belvoir, Upper Swan | LT1 and 28E, 14C | 1962 |
| Lott | Horace | Cold Harbour, York | HL0 | 1912 |
| Lott | Horace | Cold Harbour, York | HL0 | 1924 |
| Loud | W. A. | C.P. 22181 / 55, H.F. 11788 / 74, Yorkrakine | W4L | 1912 |
