| Monks | G. J. T. | Block 180/2, Coomberdale | 3AD | 1926 |
| Monks | W. S. | Nalya, Loc. 5968, via Mt. Barker | 3SM and 27B, 29E | 1962 |
| Monks & Carrick | F. M. & A. P. | Wellington Loc. 4, Lot 2, Sussex Loc. 62, 2638, Wonnerup | 4MC and 102B, 26A | 1962 |
| Monks & Son | E. | Wilgie and Birdwood, Pithara | ME3 and 47B, 34E | 1962 |
| Monoghan | F. M. | P.L. 1747, 1943/102, Edjudna | 6FM | 1912 |
| Monoghan | F. M., | P.L. 1747, 1943/102, Edjudina | 6FM | 1924 |
| Monro | A. | Hay Loc. 605, 1817, 1064, Mt. Barker | MN0 and 14C, 106E | 1962 |
| Montague | A. J. | Kent Loc. 1473, Gairdner River | MA3 and 46B, 49A | 1962 |
| Montague | A., | Forrest Creek, Minnivale | 2UM | 1924 |
| Montague | Sarah Jane | Nanga Brook, Nanga Brook Mill | 9MQ | 1924 |
| Montague | W. A. | Forrest Creek, Minnivale | 2UM and 19D, 28E | 1962 |
| Montague | W. G. | The Maize, Koorda | 7UM and 44E, 18D | 1962 |
| Monteith | C. A. | Block 37, Cowcowing Area, Dowerin | CM1 | 1912 |
| Monteith | C. A. | Block 37, Cowcowing Area, Dowerin | CM1 | 1924 |
| Montgomery | A. & D. | Wandu Hills 3644/5, 595/port. 6539, Kojonup | EK9 and 25A, 49B | 1962 |
| Montgomery | Dr., & McClemans, Rev. J., | Rathnally, Behanging, via Mogumber | XL0 | 1924 |
| Montgomery | George | Commonage, Menzies | 1MY | 1924 |
| Montgomery | John | Middle Swan | MX8 | 1924 |
| Montgomery | M. C. | Canningstown, Upper Kalgan, via Albany | CN3 and 10D, 13E | 1962 |
| Montgomery | M. H. | Montaro, Armadale | 9UD | 1962 |
| Montgomery | Wm. T., | Manjimup | P9M | 1924 |
| Montgomery & McClemans | Dr. & Rev. J. | Rathnally, Rehanging, Mogumber | XL0 | 1912 |
| Moodie | Thos. & Mary Jane. | Pastoral Leases 2636, 97, Westonia | B2P | 1924 |
| Moody | B. S. | Cloverlea, Jindong, via Busselton | M7Z | 1962 |
| Moody | E. R. (Mrs) | Light Brook, Moora | 9EM and 45B, 67E | 1962 |
| Moody | G. W. | Wongamine & Chittering, Wongamine | G1M | 1912 |
| Moody | G. W., | at Wongamine, Chittering, Wongamine | G1M | 1924 |
| Moody | P. E | Locs. 2260, 2991, Beacon | P1M and 30B, 103E | 1962 |
| Moody & Allen | - | Sunningdale, Ongerup | Y1U | 1924 |
| Moody & Sons | L. J. | Hill View, Goomalling | G1M and 6B, 13A | 1962 |
| Moody Bros | - | Wrothsmere, Ongerup | M3Y | 1924 |
| Moon | Fred., | Craigian, Manjimup | M9F | 1924 |
| Moon | George | Marrcela, Gnowangerup | Q7G | 1924 |
| Moon | John Henry | Commonage, Ora Banda | 2MQ | 1924 |
| Moon | Thomas | Kihea Farm, Shackleton | KF4 | 1924 |
| Moondah Grazing Co. | - | Moondah, Gingin | 2VX and 80C, 12E | 1962 |
| Mooney | W. R. | Peep O'Day, Bullaring | Q4M and 22B, 14A | 1962 |
| Mooney | Wm. | Yalup Park, Yalup Brook | 7WM | 1912 |
| Mooney | Wm. F., | Avon Loc. 9757, 12882, 12709, Bullaring | Q4M | 1924 |
| Mooney | Wm., | Yalup Park, Yalup Brook | 7WM | 1924 |
| Moongooree | - | Pastoral Co Ltd. Moogooree Station, Carnarvon | H1H | 1928 |
| Moonyoonooka Pastoral Co. | - | Moonyoonooka Station, Geraldton | M0N and 40D, 53F | 1962 |
| Moor | C. R., | Geelorup, South Bunbury | BQ5 | 1924 |
| Moor | Harry | Copperfield, c/o. P. O. South Bunbury | G5H | 1927 |
| Moor | J. C. | Nerida, Esperance | ME4 and 104B, 40A | 1962 |
| Mooranoppin Pastorial Co. | - | Mooranoppin, Kellerberrin | V1W and 107E, 29D | 1962 |
| Moorarie | - | Pastoral Co. Ltd. Moorarie Station, Meekatharra | 1CU | 1928 |
| Moorarie Pty. Ltd. | - | Moorarie and Opawa, Kellerberrin | V1W and 107E, 29D | 1962 |
| Moore | A. & M. | Loc. 148-9, 150, 135, Westonia | O0M and 46B, 84E | 1962 |
| Moore | A. B. | Locs. 148-9-50, 135, Westonia | M4A | 1962 |
