| Mt. Malcolm Pastoral Co. | - | Glenoran, Mt Malcolm | 0RN | 1924 |
| Mt. Malcom Pastoral Co. Pty. Ltd. | - | Glenorn via Kalgoorlie | 0RN and 39C, 9E | 1962 |
| Mt. Newman Pastoral Co. | - | Mt. Newman, Meekatharra | 6QC and 39C, 39E | 1962 |
| Mt. Phillip Station Pty. Ltd. | - | Mt. Phillip Station, Canarvon | OZ1 and 18E, 22B | 1962 |
| Mt. Phillips Station Ltd. | - | Mount Phillips Station, Carnarvon | OZ1 | 1925 |
| Mt. Rupert Co. | - | Mt. Rupert Station, Wongan Hills | S6G | 1926 |
| Mt. Vetters Station | - | Mt. Vetters Station, Bardoc, via Kalgoorlie | D1P and 13C, 32E | 1962 |
| Muccan Pastoral Co. Ltd. | - | Muccan Station, Pt. Hedland | MP8 and 1C, 40E | 1962 |
| Mudge | A. L. | Clover Hill, Wagin | MU7 | 1924 |
| Mudge | C. G. | Yilgarn Lot 740, Bodallin | 4MU and 3B, 58F | 1962 |
| Mudge | H. T. W. | Conway's Farm, Wagin | VT3 | 1912 |
| Mudge | H. T. W. | Conway's Farm, Wagin | VT3 | 1924 |
| Mudge | M. M. | 10049, Coorow | M6M and 39E, 15D | 1962 |
| Mueller | O. T. C. | Stirling View, Tenterden | O7M | 1912 |
| Mueller | O. T. C. | Stirling View, Tenterden | O7M | 1924 |
| Muers | A. D. | Oak View, East Narrogin | 8MR | 1912 |
| Muers | A. D. | Oak View, East Narrogin | 8MR | 1924 |
| Mues | W. | Glenvale, Meenaar | 1GV | 1912 |
| Mues | W. | Glenvale, Meenaar | 1GV | 1924 |
| Muffatti | F. | Wanda, Yunderup | 5WN and 11D, 26E | 1962 |
| Muggleton | Arthur | Black Hills, Wyndham | MU5 | 1912 |
| Muggleton | Arthur | Black Hills, Wyndham | MU5 | 1924 |
| Muggleton | F. W. | Frog Hollow, Turkey Creek | FM7 | 1912 |
| Muggleton | F. W. | Frog Hollow, Turkey Creek | FM7 | 1924 |
| Muggleton | N. | Black Hill Station, Turkey Creek | UT7 | 1912 |
| Muggleton | N. | Black Hill Station, Turkey Creek | UT7 | 1924 |
| Muggleton | Samuel | Frog Hollow, Turkey Creek | 2MU | 1912 |
| Muhleisen | John F. | Criterion Dairy, Yalup Brook | N0F | 1924 |
| Muhs | H. J. | Chippendale, Nungarin | 5WM and 35A, 44B | 1962 |
| Muhs | K. D. | Chippendale, Nungarin | C3M and 44D, 113E | 1962 |
| Muhs | William D. F. | Avon Locs. 14235, 14236 and 23381, Nungarin | W5M | 1926 |
| Muir | A. | Deeside, Manjimup | AM4 and 9D, 18E | 1962 |
| Muir | A. (jnr.) | Deeside Farm, Manjimup | 4AE and 52F, 29D | 1962 |
| Muir | A. E. | Collie | ME5 | 1924 |
| Muir | A. E. | Lake Muir, Manjimup | S1V | 1962 |
| Muir | A. F. H. | Forest Hill, Plantegenet & Nabagup, Nelson | FM4 | 1912 |
| Muir | A. F. H. | Forest Hill, Plantagenet, Nabagup, Nelson | FM4 | 1924 |
| Muir | A. F. H. & A. A. | Kurandra, Manjimup | 0YS and 80A, 32B | 1962 |
| Muir | A. G. | Mordalup, Bridgetown | 6JJ | 1912 |
| Muir | A. J. | Nelson 7135, Ferndale, Minjimup | M3A | 1962 |
| Muir | A. jun. | Nabajub, Lake Muir & Forest Hill, Mt. Baker | MV0 | 1912 |
| Muir | A. jun. | Nabagup, Lake Muir, Forest Hill, Mt. Barker | MV0 | 1924 |
| Muir | A. N. & J. A. | Warrungup, Gnowangerup | MU0 and 14B, 102A | 1962 |
| Muir | Andrew | Deeside, Balbarrup | AM4 | 1912 |
| Muir | Andrew | Fern Bank. Balbarrup | PJ7 | 1912 |
| Muir | Andrew | Deeside, Balbarrup | AM4 | 1924 |
| Muir | Andrew | Fern Bank, Balbarrup | PJ7 | 1924 |
| Muir | Andrew G. | Mordalup, via Bridgetown | JJ6 | 1924 |
| Muir | Andrew R. | Lake Muir Run, via Manjimup | 0UX | 1924 |
| Muir | Andrew Robert | Hall's Creek | 1RM | 1928 |
