| 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 |
| Blakeney | C. D. | Loc. 164, Balingup | RV8 | 1962 |
| Blakeney | E. P | River View, Upper Blackwood | RV8 | 1912 |
| Blakers | C. | Nelson Loc. 5824, Manjimup | U3F | 1962 |
| Blakers | L. G. | Nelson loc. 2188, Manjimup | B8L and 53F, 17D | 1962 |
| Blakiston | A. R. | Red Hill, Tammin | AB8 and 3B, 114E | 1962 |
| Blakiston | F. C. | Avon 11470, 11546, Caerphilly, Wyalkatchem | FB4 and 112A, 42B | 1962 |
| Blakiston | F. W. | Rock View, W. Yorkrakine | F7B and 8D, 48E | 1962 |
| Blakiston | G. J. & F. | Wordening, York | F9B | 1912 |
| Blakiston | J. L. | Keynsham, W. Toodyay | 4JB and 42D, 25E | 1962 |
| Blakiston | L. | Sub. Loc. 193 and 194 | L4B | 1912 |
| Blakiston | L. F. | Lancefield Farm, Moorine Rock | EP1 and 49D, 48E | 1962 |
| Blakiston | L. L. | Hillcrest, Bejoording | L4B and 16C, 67A | 1962 |
| Blakiston | S. A. S. | Kya Kya Farm, Tammin | F9B and 110, 9B | 1962 |
| Bland | C. N. | Brooklyn, Yoting | 3OB and 17B, 21E | 1962 |
| Bland | Chas. D. | Brooklyn, Quairading | 3OB | 1924 |
| Bland | J. A. | Eden Valley, Narrogin | B3D and 51F, 39D | 1962 |
| Bland | Joseph | Eden Valley, Narrogin | B3D | 1912 |
| Bland | Joseph | Eden Valley, Narrogin | B3D | 1924 |
| Bland | Walter H. | Wirrilly, Kellerberrin | V3B | 1924 |
| Blanton | F. M. | Karridale | 7YB | 1924 |
| Blatch | B. G. | Glenoran, Culham | 7XB and 105A, 37B | 1962 |
| Blatch | B. G. & H. A. | Hilly Fields, Jacob's Well, Via York | 7KB | 1924 |
| Blatchford | Chas. S. | Oakland Farm, Cuballing | 3UB | 1924 |
| Blayney | A. | Enriwa, Moonyoonooka | BA0 | 1912 |
| Blayney | A. | Enriwa, Moonyoonooka | BA0 | 1924 |
| Blayney | E. | Eradu, Nabawa | BZ4 | 1924 |
| Blayney | G. & J. | Woodcote, Eradu | B8X and 23D, 105E | 1962 |
| Blayney | H. | Nunga Farm, Moonyoonooka | BY7 | 1912 |
| Blayney | H. | Nunga Farm, Moonyoonooka | BY7 | 1924 |
| Blayney | T. | Enerwya, Eradu | Y5B and 53F, 115E | 1962 |
| Blayney | T. (jnr.) | Enriwa, E. Chapman Road Mail, via Geraldton | 9BV and 71E, 41B | 1962 |
| Blayney | Thos. | Enerwya, Eradu, Via Geraldton | Y5B | 1924 |
| Blechynden | Alfred W. | Morbining, East Beverley | B6Q | 1924 |
| Blechynden | Arthur | The Pools (Yerriminup), Bridgetown | A4O | 1912 |
| Blechynden | Arthur | The Pools (Yerriminup) Bridgetown | A4O | 1924 |
| Blechynden | B. E. D. | Burnside, Mt Kokeby | BB7 and 50D, 17E | 1962 |
| Blechynden | B. H. | Glentullock, Bridgetown | B4B | 1912 |
| Blechynden | B. H. | Glentullock, Bridgetown | B4B | 1924 |
| Blechynden | B. K. | Haily, Mt kokeby | 7BK and 111D, 111E | 1962 |
| Blechynden | C. A. & L. A. & V. A. | Glen Pennant, Manjimup | X1P and 14C, 19E | 1962 |
| Blechynden | C. H. | Dale Park, W. Brookton | XB7 and 1C, 107 | 1962 |
| Blechynden | C. J. F. | Selrahc, Boyup Brook | BF8 and 6A, 42C | 1962 |
