| Lewis | L. H. | Hillsborough Farm, Dumbleyung | 3LN | 1924 |
| Lewis | L. H. & R. A. | Newlands, Nalkain | A9L and 15E, 44C | 1962 |
| Lewis | L. J. | Locs. 722, 92, East Rockingham | ML3 and 44D, 58F | 1962 |
| Lewis | L. W. & B. E. | Ardlui, Benjabberring | 1WL and 32E, 22B | 1962 |
| Lewis | Mark | Riverview, Cannington, Dullya Rock Hole, 25m. North Wonga Hills, 30m. Coomberdale | ML8 | 1912 |
| Lewis | Mark | Riverview, Dullya Rock Hole, Cannington; 25m. N. Wongan Hills; 30m. E. Coomberdale | ML8 | 1924 |
| Lewis | Mary | Location 518, Ninghan | 3NL | 1924 |
| Lewis | Mary Anne | Jarrahdale | L3Q | 1924 |
| Lewis | R. A. | Annie Brook, Marybrook | E5L and 15B, 41A | 1962 |
| Lewis | R. C. | Cockburn Sound 561, Spearwood | C9V | 1962 |
| Lewis | R. L. | Balgarup, Kojonup | GL0 and 28A, 20B | 1962 |
| Lewis | R. S. L. | Lazy R., Manmanning | R0L and 9D, 113E | 1962 |
| Lewis | Richard james | Blackboy Hill, Muradup, Kojonup | X5L | 1924 |
| Lewis | S. R. | Commonage, Nullagine | S2L | 1912 |
| Lewis | S. R. | Commonage, Nullagine | S2L | 1924 |
| Lewis | Samuel | Group 50, Wellard, Peel Estate | Z6P | 1924 |
| Lewis | Samuel E. | Avon Location 20020, Eujinyn | Y6L | 1924 |
| Lewis | T. J. | Hill View and Gwendallen, Mornington Mills | 9TL | 1962 |
| Lewis | W. L. | Glen Warren, Northcliffe | L3L | 1962 |
| Lewis | William | Location 518, Badgerin | 8LW | 1924 |
| Lewis | Wm. Guy | Wallamben, Cowcowing | 0YL | 1924 |
| Lewis | Wm. M. | Livery Stable, Davyhurst | 2ML | 1912 |
| Lewis | Wm. M. | Livery Stable, Davyhurst | 2ML | 1924 |
| Lewis & Nickells | - | Carn, Tammin | L0N | 1924 |
| Lewis & Reid | - | Timber Mills, Collie | 8LR | 1924 |
| Lewis & Reid Ltd. | - | Reid's Mill No.2, Collie, Allanson | L8R | 1924 |
| Lewis & Son | E. H. M. | Plympton, Miling | 4EL and 13C, 111E | 1962 |
| Lewis & Sons | A. R. | Lewisdale, Wickepin | NV9 and 32C, 9A | 1962 |
| Lewis Bros. | S. M. & M. K. | Gimlet Hill, Ballidu | 7LB and 44D, 71E | 1962 |
| Ley | A. H. | Cooliaberrin, Armadlae | Z2L | 1912 |
| Ley | A. H. | Cooliaberrin, Armadale | Z2L | 1924 |
| Ley & Co. | I. C. & K. M. | Lot 2 Loc. E., York | CE6 and 17C, 115E | 1962 |
| Leyden | F. | Block 11511, Yorkrakine | 0LY | 1924 |
| Leyden | F. | Rahona, Quellagetting, via Cunderdin | F1L and 36D, 107E | 1962 |
| Leyden | Frank | Rahona, Meckering | F1L | 1927 |
| Leyden | J. S. | Maylands, Narrogin | 2LN and 7C, 111E | 1962 |
| Leydon | M. | 2591-2, Metricup | YF8 | 1962 |
| Leyhane | J. | Capel Farm, Donnybrook | J4L | 1912 |
| Leyhane | J. | Capel Farm, Donnybrook | J4L | 1924 |
| Leyland | Harry | Avon Location 14133, Muckenbudin | 4QN | 1924 |
| Leyshon | H. L. | 273-4 Batemans Est., Mundijong | HL6 | 1962 |
| Leyshon | Harry L. | 35 Group, Mundijong | IL6 | 1926 |
| Libbis | John H. | Avon Location 9720, South Kumminin | QN8 | 1924 |
| Lichberg & Frawley | - | Marring Downs, Marring | LF1 | 1912 |
| Lichberg & Frawley | - | Marring Downs, Marring | LF1 | 1924 |
| Lidbury Bros. | - | Canonbury and Douglas Farms, Cononbury, Donnelly Farms, Manjimup | X3X | 1912 |
| Liddell | A. E. | Templand, Moorine Rock | A3L and 50C, 30E | 1962 |
| Liddell | Alfred Jas. | Part Gosnells Estate, Gosnells | Q8L | 1924 |
| Liddell | Arthur | Prospect Farm, Rosa Brook, Via Busselton | U8Y | 1924 |
| Liddell | John Daniel | Glen Oswald Farm, Kojonup | GO4 | 1924 |
