| May | F. C. | Blocks 3752/74, 4796/68, 3753/74 and 5004/68 Mullewa | MY0 | 1924 |
| May | G. M. | Narrogin, Narrogin | G2Y | 1912 |
| May | G. M. | Narrogin | G2Y | 1924 |
| May | Geo. Wm. | Locs. 549, 1072, 550, Koorda | XG6 | 1924 |
| May | H. H. | Rockdale, Kulinn, via Wickepin | 2LM | 1912 |
| May | H. H. | Rockdale, Kulin | 2LM | 1924 |
| May | Harry | Sandridge Farm, Coorow | MY1 | 1912 |
| May | Harry | Sandridge Farm, Coorow | MY1 | 1924 |
| May | Henry F. | Fortunatus, Mullewa | F3M | 1924 |
| May | J. J. | Loc. 28, Brunswick | U4M | 1924 |
| May | John | Bridgetown | M9J | 1912 |
| May | John | Bridgetown | M9J | 1924 |
| May | Joseph | Green Flat, Gabanintha | J8M | 1912 |
| May | Joseph | Green Flat, Gabanintha | J8M | 1924 |
| May | Mrs. Coralie | Nuytsia, Ludlow | K6V | 1925 |
| May | R. | Grass Valley, Bridgetown | M9J and 67A, 18B | 1962 |
| May | Richard | Blocks 11509/74, 21841/55, Doracoppin, via Kellerberrin | 4RM | 1912 |
| May | Richard | Blocks 11509/74, 21841/55, Doracoppin, via Kellerberrin | 4RM | 1924 |
| May | Richard A. | Mayville Farm, Wilroy | RM0 | 1927 |
| May | Thos. | Homestead Farm, Bridgetown | T4V | 1912 |
| May | Thos. Henry | Forrest Grove, Hamel | N5A | 1924 |
| May | Wm. | Eagle Hawk Farm, Kirupp | W9N | 1912 |
| May | Wm. | Eagle Hawke Farm, Kirup | W9N | 1924 |
| May & Son | G. T. | Cressfield, Koorda | GM0 and 9B, 80E | 1962 |
| May (jnr) | B. J. & A. T. | Plant Loc 5890, Albany | B4P and 20B, 13E | 1962 |
| May Dalling Pastoral Co. | - | May Dalling,Woodanilling West | D0Z | 1924 |
| Mayall | A. D. | Jundannup, Busselton | L5M | 1912 |
| Mayall | A. D. | Jundannup, Busselton | L5M | 1924 |
| Mayanup Progress Association | - | Nelson Loc. 8459, Boyup Brook | 8MP and 40A, 80B | 1962 |
| Mayberry | W. J. | Wyndham | 5XX | 1912 |
| Mayberry | W. J. | Wyndam | 5XX | 1924 |
| Mayberry & MacLean | - | Hillside Farm, Pithara | G6J | 1924 |
| Mayer | Albert Samuel | Loc. 20010, Nungarin | YA5 | 1924 |
| Mayer | Gladys Emile | Cui Bono, Merilup Road, East Dumbleyung | GM4 | 1926 |
| Mayer | Reginald | Loc. 10685-6, Tarin Rock, East Wagin | 5UM | 1924 |
| Mayfield & Son | G. E. | Claredale, Narrogin | G3M and 4A, 26B | 1962 |
| Mayger | James Fred | Yates Farm, Noggerring, via Northam | M8F | 1924 |
| Mayher & Carter | - | Pin Town Farm, Nangeenan | M6N | 1924 |
| Mayhew | D. I. | Doubtful Island Station, via Ongerup | X7A | 1962 |
| Maylam | G. P. | Kashmir, Cowaramup | GM7 | 1962 |
| Maynard | George E. | Fitz. Loc. 754, Circle Valley, Esperance | 4VQ | 1925 |
| Maynard | K. F. C. | Springvale, Woodanilling | 1MK and 22D, 34E | 1962 |
| Maynard | R. V. | Hillsview, Williams | RM9 and 32C, 44A | 1962 |
| Maynard | S. G. | Avonleigh, Brookton | G7M | 1912 |
| Maynard | S. G. | Avonleigh, Brookton | G7M | 1924 |
| Maynard | S. H. | Loc. 1037, Hillview, Mt Barker | Y3J and 13A, 20C | 1962 |
| Maynard | Thos. | The Falls, Upper Brunswick | TM6 | 1912 |
| Maynard | Thos. | The Falls, Upper Brunswick | TM6 | 1924 |
| Maynard & Son | - | Darawah, Mt Erin | D9C | 1912 |
| Maynard & Son | - | Darawah, Mt Erin | D9C | 1924 |
