| Mansfield & Griffin | - | Maroonah Station, Onslow | M2G | 1912 |
| Mansfield & Griffin | - | Maroonah Station, Onslow | M2G | 1924 |
| Manson | G. P. & I. M. | Willow bank, Ferguson Via Dardanup | MQ3 and 57F, 11C | 1962 |
| Mantell | A. D. C. | Lot M. 1334, Swan Loc. 1371, Bindoon | KM8 and48D, 116E | 1962 |
| Manton | A. J. | Plantagenet Loc.2737 Lower Kalgan, via Albany | 6JM 119A, 28B | 1962 |
| Manton | A. K. | Loc 9508, Lake Grace | VK6 | 1924 |
| Manton | C. E. | Kurrenkutten, 1124, 1252, 1255,1256 | CM2 45C, 54F | 1962 |
| Manton | H. & E. | Coloardo, Yealering | ET4 49B, 23E | 1962 |
| Manton | T. E. | Carinya, Napier, via Albany | YM2 32B, 11A | 1962 |
| Manton & Co. | E. | Aylesbury, Woodanilling | EM4 | 1912 |
| Manuel | Eva. E. | Cunderdin Run, Cunderdin | V3M | 1924 |
| Manuel | F | Ardnona, Toodyay | 3MF | 1924 |
| Manuel | F. | Ardnona, Toodyay | 3MF | 1912 |
| Manuel | Gardon S. | Wyworrie, Mukinbudin | 5ZN | 1924 |
| Manuel | H. W. | Sydney Street, Cottesloe Beach | U1Q | 1924 |
| Manuel | J. H. | Gnownallup Farm, Nyabing | M1U | 1924 |
| Manuel | John | Lake View Farm, Brookton | R8E | 1912 |
| Manuel | John | Lake View Farm, Brookton | R8E | 1924 |
| Manuel | L. D. | Hillerest Victoria Locs. 4922, 3782 ,Buntine | 0ML 23D, 44E. | 1962 |
| Manuel | S. R. | Avon Locs. 17655, East Beverley | 8MV | 1924 |
| Manuel & Co. | E. | Aylesbury, Woodauilling | EM4 | 1924 |
| Manuel & Son | M. J. | Victoria 4921, 3678, Wubin | 3CR 50D, 20E | 1962 |
| Manuel Co. | C. A. | Gnowanallup, Nyabing | M1U 32B, 37E | 1962 |
| Manuel Co. | S. R. | Avon 17655, 3864, 6658, Beverley | 8MV 102C, 40E | 1962 |
| Manuel, & Sum | C. J. | Wyworrie, Mukinbudin | U1M, 10C, 37E | 1962 |
| Mapleden | A. L. | 11939, Horthcliffe | AM9 | 1962 |
| Maplesden | James Robert | Forest Glen Farm; Pinjarra | J5M | 1928 |
| Mapstone | B. H. | Sussex Loc. 661, 688, 2176, Margaret River | 9MZ | 1962 |
| Marafioti | B. | 739-40, 1116, Bodallin | 1BM, 25B, 8E | 1962 |
| Marafioti | D. | Loc. 602, Bullfinch | DM4 41D, 4E | 1962 |
| Marafioti | G. | 990-1-6-7-5-9,Boddalin | E10, 49B, 41A | 1962 |
| March | E. J. | 110 Grosvenor Road, North Perth | YP7 | 1924 |
| Marchagee Est. | | Marchagee Estate, Marchagee | ME7, 30A, 22C | 1962 |
| Marchall | W. P. | Marshall's Farm, Narrogin | WM2 | 1924 |
| Marchant | F. R. | Lakeside Dairy, Bibra Lake | N6O | 1962 |
| Marchant | Frank | Phillips River District, Ravensthorpe | F5N | 1924 |
| Marchant | Frank. R. | Lakeside Dairy, Bibra Lake | N6O | 1924 |
| Marchant | J. | The Opels, Harvey Road, Collie | Z7A | 1924 |
| Marchant | M. V. & W. A. | Winumera Vale, Yelbeni | 2DR, 110E, 27D | 1962 |
| Marchant | Wm. Isaac | Narngulu via Geraldton | M7T | 1912 |
| Marchant | Wm. Isaac | Narugulu | M7T | 1924 |
| Marchant & Co. | T. G. | Green Valley, York West | MZ6 | 1924 |
| Marchesi | G. G. & R. | Peel Est. Lots 585, 1207, Wellard | 8GM, 116E, 44C | 1962 |
| Marchette | H. | Rocklands, Mingenew | 3HM | 1912 |
| Marchette | H. | Rocklands, Mingenew | SU7 | 1924 |
| Marchetti | H. C. | Minderoo Station via Onslow | SU7 | 1912 |
| Marchetti | H. C. | Minderoo Station, via Onslow | SU7 | 1924 |
| Marchetti | J. | Boyanup A. A. Lots 160 and 382, Geelorup | MJ3 80B, 50A | 1962 |
| Marchetti | J. & M. | Wongarbon, West Brookton | M5J, 3A, 108B | 1962 |
| Marchetti & Sons | | Murray Locs 1080, 1342, 956, Waroona | 4KD, 118, 19B | 1962 |
