| Mountford & Son | F. & D. | Burslem, Redberne, Eden Place, Dardanup | MF7 and 84B, 44A | 1962 |
| Mountfort | R. O. | Avon Loc. 15538, Korrelocking | 9OM | 1924 |
| Mountjoy | W. E. | Canberra Springs, Wongan Hills | K7Z and 2C, 50E | 1962 |
| Mouritz | Ernest A. | Kojonup Loc. 7361, Gnowangerup | 6QN | 1924 |
| Mouritz | R. B. | 418-9-20, 1034, 2101, 2195, 1702, Hyden | M8R and 117D, 45E | 1962 |
| Mouritz | T. & V. | Roe 801, Hyden | 9WM and 27B, 50A | 1962 |
| Mouritz | W. C. | Derry-Na-Sura, Armadale | D4M and 49B, 49E | 1962 |
| Mouritzen & Hayton | - | Goomarin Farm, Burracoppin | X2M | 1924 |
| Mouritzen & Son | A. C. | Gymcoorda, Wandering | 1UM and 6C, 56F | 1962 |
| Mouroubra Pastoral Co. | - | Mouroubra Station, Mollerin | Z8T and 42B, 23E | 1962 |
| Moustaka | T. | Bookara, Geraldton | TM7 | 1912 |
| Moustaka | T. | Bookara, via Geraldton | TM7 | 1924 |
| Moxham | John | Loc. 16053, S. Quairading | 8XO | 1924 |
| Moxon | Ada K. | Welton Dale, Kronkup | 0ZL | 1924 |
| Moxon | Geoffrey | Welton Dale, Kronkup | 0ZL | 1928 |
| Moy | Patrick | Rosedale Farm, Naraling | MY7 | 1924 |
| Moyes | Alfred | Gown Brae, Thomson's Bro | AA0 | 1912 |
| Moyes | Alfred | Gowu Brae, Thomson's Brook | AA0 | 1924 |
| Moyes | E. T. & E. | Prestbury, Nelson Loc. 2313, Bridgetown | MY5 and 39C, 31E | 1962 |
| Moyes | R. G. | Lots 24-5 Chapman Road, Bentley Park | 7GM | 1962 |
| Moylan | J. | Loc. Nos. 2390-1, Jindong | M0N | 1962 |
| Moyle | Fred. H. | Hotel, Cranbrook | M6F | 1924 |
| Moyle | J. R. & C. T. | Fairview, Narrogin | X7M | 1924 |
| Moyle | S. F. | Rubhen Dale, Manjimup | S2M | 1962 |
| Moyle | Stephen Jas. | Ishpenning Farm, Kalgan River | 5ZM | 1924 |
| Moyle | T. B. | Lake Preston, Kendalup, Coast Road, via Bunbury | UM8 | 1924 |
| Moyle | W. | P/L 396/840, Carranya, via Derby | N6M and 1C, 104A | 1962 |
| Moyle | Walter & Carrie | Banjup Siding, near Fremantle | CN9 | 1924 |
| Moynahan | A. | Subiaco Dairy, Osborne Park | 7AM | 1912 |
| Moynahan | A. | Subiaco Dairy, Osborne Park | 7AM | 1924 |
| Moyses | G. M. | Woodlands, Barton | M9M | 1912 |
| Moyses | G. M. | Woodlands, Barton | M9M | 1924 |
| Moyses | J. W. | Penwortham, Highbury | M9M and 40B, 33E | 1962 |
| Moyses | John | Rosedale, Popanyinning | MV8 | 1912 |
| Moyses | John | Rosedale, Popanyinning | MV8 | 1924 |
| Moyses | R. K. | Morella, Avon Loc. 27181, South Kumminin | KM4 and 47D, 48E | 1962 |
| Moysey | Bickford | Loc. 9521, Lake Grace | QN6 | 1924 |
| Mr. Keith Pastoral Co. Ltd. | - | Mt. Keith, Lawlers | KN6 | 1927 |
| Mrocyynski | Thos. | Vict. Locs. 29092/55, etc, Perenjori | MZ9 | 1924 |
| Mt. Amhurst Station Pty. Ltd. | - | Mt. Amhurst Station, Halls Creek | 7UZ and 67B, 18E | 1962 |
| Mt. Anderson Pastoral Co. | - | Mt. Anderson, Derby | RR3 and 45D, 22E | 1962 |
| Mt. Augustus Pastoral Co. Pty. Ltd. | - | Mt. Augustus Station, via Meekatharra | MA0 and 119B, 9A | 1962 |
| Mt. Barker Dairy Milk Supply | - | Lots 274-5-6-7, 124, 4561, 338, 31, 4777, Mt. Barker | JB9 and 28D, 48E | 1962 |
| Mt. Barker Estate | - | Mt. Barker Estate, Mt. Barker | NM1 and 3A, 9B | 1962 |
| Mt. Barker High School Farm Advisory Commitee | - | Pl. Loc. 6896, Mt. Barker | ZR6 and 104B, 15A | 1962 |
| Mt. Barrett Pastoral Co. Pty. Ltd. | - | Moola Bulla, via Halls Creek | 1TO and 60F, 14C | 1962 |
| Mt. Celia Station | - | Mt. Celia Station, Yarri, via Kalgoorlie | 7ME and 4c, 34E | 1962 |
| Mt. Clere Pastoral Co. Ltd. | - | Mt. Clere Station, via Yalgoo | 8BX | 1924 |
| Mt. Florence Pastoral Co. | - | Mt. Florence Station, Roebourne | AR1 and 4B, 3E | 1962 |
| Mt. Gibson Pastoral Co. Pty. Ltd. | - | Mt. Gibson, via Wubin | M3G and 8B, 12E | 1962 |
