| Moloney | F. J. | Moor View, Walkaway | PM4 and 12A, 17B | 1962 |
| Moloney | G. E. | Indarra Farm, Indarra | 1GM and 41D, 111E | 1962 |
| Moloney | Martin | Lochmoore, Quairading | O5E | 1924 |
| Moloney | Patk | Mt. Erin, Walkaway | PM4 | 1924 |
| Moloney | Patk. | Mt. Erin, Walkaway | PM4 | 1912 |
| Molster | This. | Carnamah, Mingenew | 4TM | 1912 |
| Molster | Thos | Carnamah, Mingenew | 4TM | 1924 |
| Moltoni | N. U. | Nelson 7206, Pemberton | CG4 | 1962 |
| Molyneaux | B. W. | Riverslea, Marradong | YM8 | 1924 |
| Molyneoux | A. | Locs. 228-9, 2098, Mukinbudin | 9AM and 11B, 113E | 1962 |
| Momber | R. C. | Coolabanji and Midland Sale- Yards, Gidgiegannup | RM0 and 45C, 22E | 1962 |
| Monaghan | A. | Wagin | A5M | 1912 |
| Monaghan | A. | Wagin | A5M | 1924 |
| Monaghan | Francis J. | Homestead Arra, Edjudina | 1FM | 1926 |
| Monch-Mason | T. G. | Mason Brook, Cranbrook | T7M | 1912 |
| Monch-Mason | T. G. | Mason Brook, Cranbrook | T7M | 1924 |
| Monck | Louis & Gertrude | Hines Hill | L2M | 1927 |
| Moncrieff | C. J. | 771-3, 790-2, Mt. Barker | J7M and 48B, 15E | 1962 |
| Moncrieff | D. E. & G. L. | Wareenup, Cranbrook | 2XM and 49B, 20A | 1962 |
| Moncrieff | H. R. | Morning Glory, Mt. Barker | 1MO | 1962 |
| Moncrieff | John T. | Lot 743, Kendenup | J7M | 1926 |
| Monday | Jas. T. | Williams, Quindanning | 7TM | 1912 |
| Monday | Jas. T. | Williams, Quindanning | 7TM | 1924 |
| Mondy | A. J. | Maebee, Mukinbudin | A6M and 45B, 48E | 1962 |
| Mondy | N. P. | Deepdale, Loc. 22720, Mukinbudin | X9M and 26D, 108E | 1962 |
| Mondy & Sons | A. J. | Avon 15951/2, 15959, 811, 803, Mukinbudin | IN4 and 46A, 28B | 1962 |
| Moneer | - | Leonora | MR1 | 1912 |
| Moneer | - | Leonora | MR1 | 1924 |
| Money | Est. of G. C. | Henty and Waterloo, Burekup | W0X and 51F, 35B | 1962 |
| Money | G. C. | Waterloo | W0X | 1912 |
| Money | G. C. | Waterloo | W0X | 1924 |
| Money | J. R. V. | Southvale, Kulikup | 0JV and 7E, 118D | 1962 |
| Money | Mrs. H. J. | Commonage, Dongarra | 7NY | 1924 |
| Monger | A. J. | Daliak Farm, York | M0D | 1912 |
| Monger | A. J. | Dailiak Farm, York | M0D | 1924 |
| Monger | E. S. | Mt. Bakewell, York | V0V | 1912 |
| Monger | E. S. | Mt. Bakewell, York | V0V | 1924 |
| Monger | Ernest C., | Slaughter Yards, Picton Junction | EP4 | 1924 |
| Monger | Florence, Watson, Alex., & Lee Steere, Bridget | Boolajoorda, Hamelin Pool, via Carnarvon | C8P | 1924 |
| Monger | H. G | Alpha Farm, Northam | H1N | 1912 |
| Monger | H. G. | Alpha Farm, Northam | H1N | 1924 |
| Monger | J. & F. | Meedo Station, Gladston via Carnarvon | D2O | 1912 |
| Monger & Wilson | - | Pt. Hedland & Marble Bar | M9W | 1912 |
| Monger & Wilson | - | Port Hedland and Marble Bar | M9W | 1924 |
| Monk | B. & E. M. | Kanawalla, West Pingelly | B2M and 51F, 14D | 1962 |
| Monk | E. | Clavering Farm, Latham | 6EM and 49A, 31B | 1962 |
| Monk | G. W. | Downside Abbey, Somerset Hill, via Denmark | 0MZ | 1962 |
| Monk | W. E. C. | Victoria Loc. 6709 and 7844, 8081, 3680, 5887, 7332, 4081, 4017, Latham | M4M and 31B, 118E | 1962 |
| Monkhouse | Arthur W., | The Ranch, Mingenew | 1XN | 1924 |
| Monkhouse | J. | Riverlands, North Boyanup | 5VM | 1962 |
