| McKenzie | W. D. | Sonas, Morawa | D5K and 6B, 8A | 1962 |
| McKenzie | W. N. & H. M. | Bonnie Vale, Three Springs | N4Q and 11B, 40A | 1962 |
| McKenzie | William Thomas | Jilbadji 115, South Burracoppin | W4M | 1926 |
| McKenzie | Wm. | Kondut | UM4 | 1924 |
| McKenzie & Co. | - | Boyalling, Wagin West | 6VL | 1924 |
| McKenzie & Rafferty | - | Raffertys, Bencubbin | K4R | 1924 |
| McKenzie Bros. | (W. D. & D. N.) | Victoria Loc. 5924, 8302, 6640, 6643, Morawa | 5MB and 17B, 59F | 1962 |
| McKenzie Bros. | - | Clay Holes Farm, Dumbleyung | 2MX | 1912 |
| McKenzie Bros. | - | Clay Holes Farm, Dumbleyung | 2MX | 1924 |
| McKenzie Cranwell & Yates | - | Maple Downs, Halls Creek | 6AD | 1912 |
| McKeon | F. H. | Sussex Loc. 2157, Margaret River | MK5 | 1962 |
| McKeon | R. T. | Sussex Loc. 2155, Margaret River | 9RM and 108D, 6E | 1962 |
| McKeown | B. H. E. | Upper Blackwood, Bridgetown | 7AV | 1924 |
| McKeown | Hugh | Tannachmore, Wadderin | HM0 | 1928 |
| McKernan | J. H. | Talbot Farm, Greenbushes | KC8 | 1924 |
| McKernan | John Stephen | Commonage, Bunbury | UK4 | 1924 |
| McKibbon | A. H. | Nelson Loc.4161, Yeraminnup | K6M | 1924 |
| McKie | A. | Melton, Boyup Brook | M5X and 14B, 104A | 1962 |
| McKie | G. W. | Bretonne, Cunderdin | 9GM | 1912 |
| McKie | G. W. | Bretonne, Cunderdin | 9GM | 1924 |
| McKie | S. & O. E. | Snowdon, Boyup Brook | SK7 and 40B, 10E | 1962 |
| McKimmie | Jas. | Commonage, Lower Bicton | J7K | 1912 |
| McKimmie | Jas. Ross | Commonage, Lower Bicton | J7K | 1924 |
| McKinley | Alex | Moore Park, Moora | MK5 | 1912 |
| McKinley | Alex | Moore Park, Moora | MK5 | 1924 |
| McKinley | J. | Creslow, Round Hill, via Moora | 8TE | 1924 |
| McKinley | L. A. | Moore Park, Moora | MK5 and 13B, 16A | 1962 |
| McKinley | M. P. | M. 112, M. 113, Barberton | MM1 and 20C, 67E | 1962 |
| McKinley & Co. | J. G. | Glenair, Moora | J0M and 102D, 28E | 1962 |
| McKinnon | A. | Blocks 180, 1, 2, Coomberdale | 3AD | 1912 |
| McKinnon | A. | Blocks 180, 1, 2, Coomberdale | 3AD | 1924 |
| McKinnon | Alex | Commonage, Port Hedland | K2M | 1924 |
| McKinnon | Duncan | Bangemall, Carnarvon | 3MK | 1912 |
| McKinnon | Duncan | Bangemall, Carnarvon | 3MK | 1924 |
| McKinnon | J. | Killara, East Highbury | 8NX | 1924 |
| McKinnon | J. C. | Mulgundunah, Marble Bar | M2W | 1912 |
| McKinnon | J. C. | Mulgundunah. Marble Bar | M2W | 1924 |
| McKinnon | J. C. | Killara, Highbury | 8NX and 9B, 16E | 1962 |
| McKinnon | L. | Munyana, Baandee | LK2 | 1912 |
| McKinnon | L. | Munyana, Baandee | LK2 | 1924 |
| McKinnon | R. | Kalangadoo, 1242, Corackerup Via Ongerup | MK0 and 45B, 107A | 1962 |
| McKinnon | W. N. | Casterton Farm, Dowerin | 2OM | 1924 |
| McKinnon | W. N. | Casterton Farm, Dowerin | 2OM and 67D, 20E | 1962 |
| McKinnon | Wm. | Plantagenet | WM1 | 1924 |
| McKittrick | A. | Block 11595/74, Nannup | 7MN | 1912 |
| McKittrick | A. | Block 11595/74, Nannup | 7MN | 1924 |
| McKittrick | A. H. | Loc.3568, Nannup | 8MK | 1912 |
| McKittrick | A. H. | Loc. 3568 Nannup | 8MK | 1924 |
| McKittrick | A. H. | Loc. 3568, Nannup | 8MK | 1962 |
| McKittrick | G. A. H. | Nelson 1136, Carlotta | 7MN | 1962 |
