| Bosner | M. A. | Avon 4221, Cunderdin | 8MB and 84B, 34A | 1962 |
| Bostock | A. H. W. & E. F. | Elanda, Busselton | AB6 and 34B, 14E | 1962 |
| Bostock | E. G. | Murray Loc. 703, Marradong | E1B and 22B, 117E | 1962 |
| Bostock | Geo. H. | Staunton Springs, Pingelly | H4B | 1912 |
| Bostock | Geo. H. | Staunton Springs, Pingelly | H4B | 1924 |
| Bostock | N. G. & T. P. | Avon 17719-20-20035, 13473, 19473, 23270, Yelbeni | LN3 and 5B, 9E | 1962 |
| Bosworth | Geo. | Gardener, Jandakot | 3GX | 1924 |
| Bosworth | J. H. W. | Pelcanning, Tinkurrin | 9BR | 1924 |
| Bosworth | J. H. W. & Ryton E. W. | Peecanning, E. Narrogin | 9BR | 1912 |
| Bosworth | R. M. | Locs. 7048, 7421, 7423, Harrismith | B8R and 1C, 108E | 1962 |
| Bosworth | V. A. & C. R. | Timbaroo, Jerramungup | V8B and 58F, 46C | 1962 |
| Bothe | A. C. | Clerklands, Carnamah | X1Y and 46B, 14E | 1962 |
| Bothe | R. H. & H. M. | Glenfield, Coorow | L1U and 15C, 15A | 1962 |
| Bothe & Co. | L. D. | Hillcrest, Coorow | V1Z and 22E, 38C | 1962 |
| Bothe & Co. | R. B. | Inglewood, Coorow | V1Z and 38C, 10A | 1962 |
| Bothe Bros. | - | Brooklyn, Wagerup | 0WB | 1912 |
| Bothe Bros. | - | Brooklyn, Wagerup | 0WB | 1924 |
| Botherling Pastoral Co. | - | 2979, 2464, 2490, 17429, 437, 4722, 4723, Goomalling | 7BP and 47D, 14E | 1962 |
| Botrill | J. | Kangarilly Ranch, Pingelly | 1BK | 1912 |
| Bott | David | Hill River, Moora | D2S | 1912 |
| Bott | David | Hill River, Moora | D2S | 1924 |
| Bott | R. R. | Port. Loc. 2759 ct. 1147/484, Lots AA50, 51 & 52. Loc.8995, Meckering | L7A and 49B, 115E | 1962 |
| Bottomley | M. | Boyanup AA 265, Picton Junction | NV5 | 1962 |
| Bottomley & Sons | J. | Loc. 2715 Sleepy Hollow, Manjimup | 3BY and 34C, 28E | 1962 |
| Bottrell | J. | Holland Street, Gosnells | Q5B | 1924 |
| Bottrill | J. | Kangarilla Ranch, Pingelly | 1BK | 1924 |
| Boucant | P. | Lot 29, Boyanup | 6PB | 1912 |
| Boucant | P. | Lot 29, Boyanup | 6PB | 1924 |
| Boucher | B. S. | Lynwood, Buntine | B5B and 120E, 8D | 1962 |
| Boucher | George | Dowak via Norseman | G6B | 1926 |
| Boucher | Jas. | Homestead, Wagin East | B5J | 1912 |
| Boucher | Jas. | Homestead, Wagin East | B5J | 1924 |
| Bould | W. T. | Leura, Dedari | BD8 | 1912 |
| Bould | W. T. | Leura, Dedari | BD8 | 1924 |
| Boulden | A. L. | Mt. Pleasant, Yearlering | 1AB and 5B, 29E | 1962 |
| Boulder Meat Supply Co. | - | Mernona Station, Morgans | B5B | 1924 |
| Boultbee | Harold T. | Morning Valley, Nalya Via East Brookton | N1H | 1924 |
| Boulter | B. C. | 2708 Forest Grove, Margaret River | 2BB and 26B, 23A | 1962 |
| Boulton | Chas. P | Grove Farm, Lake Grace Via Dumbleyung | Q7B | 1924 |
| Boulton | J. D. & V. M. | Coln Valley 9514/15, Lake Grace | W4B and 16D, 71E | 1962 |
| Boulton | Wilfred Dennis | Coln Valley, Lake Grace | W4B | 1926 |
| Boundy | Harold V. | Avon Location 15467, Kurrenkutten | 2VB | 1924 |
| Boundy | L. H. | Sunny Vale Farm, East Wagin | L4B and 48A, 19C | 1962 |
| Boundy | P. A. | Sunny Vale, East Wagin | P2B and 43C, 53F | 1962 |
| Boundy | Wm. Thos. | Bridgetown | W7Z | 1924 |
| Bounsell | Geo. | Quandong Run, Kunanalling | 7QB | 1924 |
| Bourgoin | Jas. G. | Railway Hotel, Cue | UL7 | 1924 |
| Bourke | A. | Leederville | SB1 | 1912 |
| Bourke | A. | Leederville | SB1 | 1924 |
| Bourke | C. W. & M. G. | N. Part of Plant. Loc. 17, Mt. Barker | BN2 and 10C, 120A | 1962 |
