| Moulden | F. G. & H. M. | Koolunga, Woodanilling | 6OK and 49C, 23E | 1962 |
| Moulden | H. M. | Quanandrup, Kojonup | QM0 | 1928 |
| Moullin | G. A. | Glen Rowan, Toodyay | GA5 and 17D, 44E | 1962 |
| Moullin & Trood | - | Sandgate, Kojonup | MT4 | 1912 |
| Moullin & Trood | - | Sandgate, Kojonup | MT4 | 1924 |
| Moulton | A. R. & B. F. | Nelson 1253 and 1606, Mayanup | 4RB and 29B, 42E | 1962 |
| Moulton | A. T. | The Mount, Bridgetown | MM0 and 67D, 102E | 1962 |
| Moulton | B. J. | Yalering, West Dale | LM0 and 31A, 2C | 1962 |
| Moulton | B. S. | Wagga, Bridgetown | SV1 and 13C, 20E | 1962 |
| Moulton | C. B. | Strathmore, Balingup | CX1 | 1962 |
| Moulton | C. V. P. | Nalyering, Pingelly | CM0 and 41D, 20E | 1962 |
| Moulton | Cecil | Scott's Brook, Upper Blackwood | CX1 | 1912 |
| Moulton | David Guy. | Scott's Brook Farm, Upper Blackwood | CX1 | 1924 |
| Moulton | F. R. | Dale via Beverley | F9M | 1912 |
| Moulton | F. R. | Dale, via Beverley | F9M | 1924 |
| Moulton | J. A. & S. D. | Kendelin, Beverley | F1O and 80A, 16B | 1962 |
| Moulton | James Matthew | Gin Valley, South Dale via Brookton | J2X | 1926 |
| Moulton | L. C. | Donally, Bridgetown | LC3 | 1912 |
| Moulton | L. C. | Donnally, Bridgetown | LC3 | 1924 |
| Moulton | L. J. | West Dale, via Beverley | LM0 | 1912 |
| Moulton | L. J. | West Dale, via Beverley | LM0 | 1924 |
| Moulton | Mathew | Scott's Brook, Upper Blackwood | 1MF | 1912 |
| Moulton | Matthew | Scott's Brook Farm, Upper Blackwood | 1MF | 1924 |
| Moulton | O. F. | Crenley, Boyup Brook | XO2 and 9A, 17B | 1962 |
| Moulton | Oscar Frank | Woddene, via Boyup Brook | XO2 | 1924 |
| Moulton | S. | Oakabella, Beverley | 9SM | 1912 |
| Moulton | S. | Oakabella, Beverley | 9SM | 1924 |
| Moulton | S. J. | Tweed Road, Bridgetown | SV1 | 1912 |
| Moulton | S. J. | Tweed Road, Bridgetown | SV1 | 1924 |
| Moulton | W. A. | Waydale Farm, Boyup Brook | Q0M | 1924 |
| Moulton & Co. | E. L. | Roseville, Boyup Brook | 1MF and 8D, 20E | 1962 |
| Mounsey | R. | 8 Merton Street, Victoria Park | 8RM | 1962 |
| Mounsey | R. M. | Falkirk Dairy Co. Pty. Ltd., Cannington | H1X and 6C, 8E | 1962 |
| Mounsey | Robt. | Springvale, Beachborough | 8RM | 1924 |
| Mount House Stations, Limited | - | Point Torment Station, Derby | 1PT | 1924 |
| Mount House Stations, Limited | - | Mount House Station, Derby | 2JK | 1924 |
| Mount House Stations, Limited | - | Mount House Stations, Derby | Y7J | 1924 |
| Mountford | C. G. | 602 (Wellington), Dardanup | 2IS and 115A, 34C | 1962 |
| Mountford | F. R. | Collie Lots 31 and 32, Waterloo | MF7 and 34B, 13E | 1962 |
| Mountford | G. | Wellington 694 and 602, Dardanup | 7VM and 32A, 28B | 1962 |
| Mountford | Jos. E. | Crooked Brook, via Dardanup | M8E | 1924 |
| Mountford | Jos. R. | Crooked Brook, via Dardanup | 7VM | 1924 |
| Mountford | W. R. | Kurralinga, Lot 119 pt. 334 Preston, Charley's Creek | 9XU and 6B, 116E | 1962 |
| 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 |
