| Blacklock | J. W. | Perth Road, Belmont | J4B | 1924 |
| Blackman | Mrs Mary E. | Ora Banda | EU9 | 1924 |
| Blackmore | S. | Sunnydale, Kojonup | 1SB | 1912 |
| Blackmore | S. | Sunnydale, Kojonup | 1SB | 1924 |
| Blackmore | S. | Canning Loc. Lot 16, 1235 and 1236 | 1SB and 111E, 109B | 1962 |
| Blackmore & Haredfeldt | C. W. & H. | Sandstone | C5U | 1924 |
| Bladder | R. J. | Glen Fern, Katanning | RB2 and 34C, 55F | 1962 |
| Bladder | Reginald J. | Glen Fern, Warren Road, Katanning | RB2 | 1927 |
| Blaikie | B. R. | Windy Hill, Cowaramup | BB7 | 1962 |
| Blaikie | G. S. | Group 12, Cowaramup | 6BG and 71C, 27A | 1962 |
| Blaikie | R. L. & M. | 2244, 2245, Cowaramup | B8W and 32B, 8A | 1962 |
| Blaim | A. F. J. | Sussex Loc. 950 Rosa Brook | BA6 | 1962 |
| Blain | W. | Locs. 1027, 1017, Witchcliffe | BX4 | 1962 |
| Blain | Wm. | Strathblane Farm, Margaret River, Via Besselton | BX4 | 1924 |
| Blain Bros. | - | Mt. Arrowsmith, Bruce Rock | BZ3 | 1924 |
| Blair | P. A. | The Pines Farm, Locs. 233-234, Byford | P6B | 1962 |
| Blair | R. | Homelands, Southern Cross | T9W and 10B, 80A | 1962 |
| Blair Bros. | | Kedaro, Hines Hill | WCO and 117B, 38A | 1962 |
| Blake | A. | Mimosa Farm, South Caroling | 5ZA | 1924 |
| Blake | A. | Rosslyn, Katanning | A5Q | 1924 |
| Blake | A. G. | Hillview, Waroona | 5AG and 3C, 50E | 1962 |
| Blake | Benjamin J. | Mundrabilla Station, Forrest | Q1W | 1927 |
| Blake | D. B. & K. M. | Edin Park, Coolup | D9B and 21C, 6E | 1962 |
| Blake | E. A. G. | Braeside, Brunswick Junction | K6F and 59F, 80D | 1962 |
| Blake | E. R. | Esheol (Offer's Estate) Benger | E5K | 1924 |
| Blake | E. V. | Oakleigh, Brunswick Junction | V7B and 33B, 27E | 1962 |
| Blake | Frank G. | Raynemoor Farm, Perenjori | B3P | 1924 |
| Blake | Fredk. | Crown Lands, Piccadilly | DB0 | 1912 |
| Blake | Fredrick | Crown Lands, Piccadilly | DB0 | 1924 |
| Blake | Henry T. | View of the Valley, Grass Valley | HT3 | 1912 |
| Blake | Henry T. | View of the Valley, Grass Valley | HT3 | 1924 |
| Blake | J. | The Gums, Ravensthorpe | UK2 | 1924 |
| Blake | J. H. | Murdong Farm, P.O., Katanning | YB1 | 1912 |
| Blake | J. H. | Muradong Farm, P.O. Katanning | YB1 | 1924 |
| Blake | J. H. & S. | Goyindah, Brookton | GW0 and 28C, 25E | 1962 |
| Blake | M. & A. E. | Avon 14020, 24188, 251, 5816, merredin | MB3 and 43A, 28B | 1962 |
| Blake | M. A. | Rosslyn, Katanning | A5Q and 38D, 7E | 1962 |
| Blake | P. & G. | Fildon, Coolup | 7EK and 38C, 44E | 1962 |
| Blake | V. F. R. | Talgomine Rocks, Merredin | 0VB and 59F, 30D | 1962 |
| Blake | W. H. | Murdong Pools, Katanning | YB1 and 37D, 43E | 1962 |
| Blake | Wm. | Bonnie Doon, Badgebup | 6PZ | 1924 |
| Blake | Wm. | Williams Location 9159 Merrilup, East Wagin | BO8 | 1924 |
| Blake & Dunn | - | Munglinup, Via Esperance | VX7 | 1924 |
| Blake & Reid | - | Fairlawn, Busselton | XX8 | 1924 |
| Blake & son | A. G. | Lankavale, Dangin | 5ZA and 71B, 4E | 1962 |
| Blakeley | Jas. | Lot 99, Guildford | Q2P | 1924 |
| Blakeman | F. & E. D. | Bryngola, Kojonup | 2YP and 20D, 19E | 1962 |
| Blakemore | E. | Eulaminna, Cannington | 6EB | 1912 |
| Blakemore | E. | Eulaminna, Cannington | 6EB | 1924 |
| Blakemore | Samuel E. | Braids, Ogden | 4ZB | 1924 |
