| Mulqueeny | John | Logie Easter Farm, Lake Brown, via Nungarin | 5QM | 1924 |
| Mulvay | C. E. | Green Bank, Kulikup | C3M and 9D, 115E | 1962 |
| Mulvay | P. | Brookwood, Kulikup | PM9 and 14D, 119E | 1962 |
| Mulvay | Peter | Balgarrup River, via Denmark | 8PM | 1924 |
| Mulvay | R. M. | Riverdale No. 2, Muradup | WM8 and 12B, 118A | 1962 |
| Mumford | G. L. | Burwood Farm, Towerlup Mail, Kojonup | N5U | 1924 |
| Mumford | H. F. | Block 7431, Kojonup Loc. Kojonup | KX5 | 1924 |
| Mumford | R. W. | Hill view Orchard, Denmark | V2H | 1962 |
| Mumme | C. E. | Roe Loc. 153, Newdegate | 6MU | 1924 |
| Mumme | Joseph | The Morrell, Yorkrakine | K0M | 1924 |
| Mummery | G. V. | Swan Loc. 3318, Mogumber | GM5 and 108B, 104A | 1962 |
| Munarra Pastoral Co. Ltd. | - | Munnarra Station, Meekatharra | S7U and 1C, 32E | 1962 |
| Muncaster | W. | Langlea, Mt. madden, via Lake King | 2MU and 50D, 23E | 1962 |
| Muncey | A. E. | Royston Guernsey Stud, Gonells | 5AE | 1962 |
| Munchenbery | G. C. V. | Sunny Hill, Doodlakine | 8GM | 1912 |
| Munchenbury | G. C. V. | Sunny Hill, Doodlakine | 8GM | 1924 |
| Munckton & Co. | I. & J. H. | Tarara, Morawa | 2HM and 18B, 50E | 1962 |
| Munckton Bros. | Stanely W. & Ernest J. | Hamersley and Woodlands, York | JM2 | 1927 |
| Mundabullangana Ltd. | J. S. | Mundabullangana Station, Port Headland | J1P and 80C, 80A and J1P (Face) | 1962 |
| Munday | Chas | Williams (Rose Hill), Marradong | 7MY | 1924 |
| Munday | D. B. | Linga Longa, Hyden | P9M and 10E, 48B | 1962 |
| Munday | D. J. | Kerrigan Rock Loc. 2213, Hyden | 0MD and 19B, 40E | 1962 |
| Munday | D. McNie, P. Logan, W. E. | Salt Soak, Duketon | 1XB | 1924 |
| Munday | F. G. | Spottiswood, Roe Loc. 432-5, Hyden | F7M and 48B, 11E | 1962 |
| Munday | G. H. | Camballing, Marradong | G2M | 1912 |
| Munday | G. H. | Camballing, Marradong | G2M | 1924 |
| Munday | Harriet M. | Home Close, Kirk's Rock, via Wickepin | Y6M | 1924 |
| Munday | Horace A. | Hotham River, Marradong | HF5 | 1924 |
| Munday | J. & J. R. | Wimmerooka, Karkgarin | 1JM and 14B, 27E | 1962 |
| Munday | P. B. | Lot 19 Flemington Road, Albany | P2M and 32C, 27E | 1962 |
| Munday | P. C. | Roe Loc. 197-8, Karlgarin | LG0 and 25B, 46E | 1962 |
| Munday | W. J | The Wells, Quindanning | M3L and 39D, 25E | 1962 |
| Munday | W. J. | Lyndhurst, Williams | M3L | 1912 |
| Munday | W. J. | Lyndhurst, Williams | M3L | 1924 |
| Munday | Wm. | Honolulu Farm, Marradong | VW2 | 1912 |
| Munday | Wm. | Honolulu Farm, Marradong | VW2 | 1924 |
| Munday & Co. | | Salt Soak, Duketon | 1XD | 1912 |
| Munday & Co. | - | Salt Soak, Duketon | 1XD | 1924 |
| Mundrabilla Pastoral Co. Pty. Ltd. | - | Mundrabilla Station, Forrest | E5J and 16D, 31E | 1962 |
| Mundy | Edwd. | Taylor's Well, Pingelly | EM9 | 1912 |
| Mundy | Edwd. | Taylor's Well, via Pingelly | EM9 | 1924 |
| Mundy | H. H. & H. E. W. | Loc. 4671, Ajana, Northampton | H6E | 1912 |
| Mundy | H. H. & H. E. W. | Loc. 4671, Ajana, Northampton | H6E | 1924 |
| Mundy | Madeleine | Erlistown Creek, via Laverton | D2Y | 1924 |
| Mundy | R. H. & G. D. | Rosewater, West Pingelly | EM9 and 32B, 46E | 1962 |
| Mundy & Co. | | Salt Soak, Duketon | 1XB | 1912 |
| Mungrup Pastoral Co. | - | Mungrup, Narrikup | KW2 and 55F, 107D | 1962 |
| Municipal Council of Collie | - | Public Pound, Collie | GM1 | 1927 |
| Municipal Council of Collie | - | Public Pound, Collie | CM1 | 1962 |
| Municipality of Narrogin | - | Pound, Narrogin | 0VN | 1962 |
