| Blythe | H. R. | Mundalup, Nannup | T1E and 117, 118E | 1962 |
| Blythe | J. W., M. F., A. | Mount House Station, West Kimberley | 2JK | 1912 |
| Blythe | Jas. B. | C. P. Lease 8900 / 55, Pingelly | B6B | 1912 |
| Blythe | Jas. B. | C.P. Lease 8900/55, Pingelly | B6B | 1924 |
| Blythe | M. A. | 2864/5, Yallingup | ZB6 | 1962 |
| Blythe | M. M. | The Park, Guilford | 4NT | 1924 |
| Blythe | Mary M. | Fitzroy, West Kimberley | EE2 | 1912 |
| Blythe | Mary M. | Fitzroy, West Kimberley | EE2 | 1924 |
| Blythe | P. A. | Hillside, Kukardup, via Karridale | 7CB and 23D, 13E | 1962 |
| Blythe | Pauline | Brooking, Fitzroy, West Kimberley | PX5 | 1912 |
| Blythe | Pauline | Brooking, Fitzroy River | PX5 | 1924 |
| Blythe | Rebecca | Meelup Park, Dunsborough, Via Busselton | A2L | 1924 |
| Blythe | Thos. | Blocks 1702, 93, 721, 5002, Nannup | T1E | 1912 |
| Blythe | Thos. | Blocks 1702, 93, 721, 5002, Nannup | T1E | 1924 |
| Blythe & W.A. Trustee, Executor & Agency Co. Ltd. | A. & J. W. | Pt. Torment Station, Derby | 1PT | 1924 |
| Blythe & W.A. Trustee, Executor & Agency Co. Ltd. | A. & J. W. | Mt. House Station, Derby | 2JK | 1924 |
| Blythe & W.A. Trustee, Executor & Agency Co. Ltd. | A. & J. W. | Mt. House Station, Derby | Y7Q | 1924 |
| Blythe Bros. | - | Belverdere, Dunsborough | A2L | 1962 |
| Blythwood Pastoral Co. | - | Blythwood, Karridale Bullsbrook | U1M and 10B, 30E | 1962 |
| Boan | F. T. | Loc. 34, Pepperment Grove | B6F | 1962 |
| Board | A. J. | Bonnie Doou, Piesse East | S4U | 1924 |
| Board | E. E. | Farm A 825, Treeton, Cowaramup | 5XB | 1962 |
| Board | John E. | Hilldrop, Beverley | J3B | 1927 |
| Board | Mrs Maud | Pine Hill, Mt. Barker | T8X | 1924 |
| Board | V. J. L. | Woodside, Denmark | YS8 | 1962 |
| Board | W. J. | Locks 530, 1 & 2, Mt. Barker | K6D | 1924 |
| Board of Missions, Presb. Church | - | Port Gearge IV, Via Broome | PM3 | 1924 |
| Boardman | F. | 1816, Busselton | KB5 and 13C, 110E | 1962 |
| Boase | A. F. | 15890, 15873, Bruce Rock | TD8 and 15D, 49E | 1962 |
| Boase | E. C. | Brooklyn, Berring, via Goomalling | ME1 | 1912 |
| Boase | E. C. | "Brooklyn" Berring, Via Goomalling | ME1 | 1924 |
| Boase | E. V. & A. | Dhil- Kush, Bruce Rock | BU5 and 45C, 30E | 1962 |
| Boase | F. C. | Brooklyn, Goomalling | ME1 and 102B, 29A | 1962 |
| Boase | H. W. | Considering, Goomalling | HK1 and 14E, 6D | 1962 |
| Boase | K. E. | Ivistus, Goomalling | K2B and 32B, 36E | 1962 |
| Boase | R. E. | Greenwood, Darakan | BE8 and 38B, 33E | 1962 |
| Boatswain | Harry | "Dorset Farm" Hamel | XU5 | 1924 |
| Bobanac | Matty | Commonage, Meekatharra | B9Z | 1924 |
| Bobicoat | Joseph | Spring Farm, Midland Junction | BD6 | 1912 |
| Boccamazzo | G. A. | 2448, 6628, Albany | BG4 and 102B, 42E | 1962 |
| Boccuzzi | G. & R. | Hay Loc. 1270, 1444 Denmark | 0BG and 49B, 40E | 1962 |
| Bock | A. D'A. | Three Winds, Witchcliffe | LC7 and 39C, 56F | 1962 |
| Bock | E. J. | Teralee Evans Siding, via Donnybrook | B8K | 1962 |
| Bock | F. N. | Tothills Valley, Kulikup | U4K | 1924 |
| Bock | John | Deebelt, Kojonup | 4BJ | 1912 |
| Bock | John | Deebelt, Kojonup | 4BJ | 1924 |
| Bock | L. J. | Warronerup, Blackwood Road, Muradup | L6U | 1924 |
| Bock | R. D. | Tothills Valley, Kojonup | U4K and 7C, 116A | 1962 |
| Bocquet & Co. | - | Broad Acre, Dalwallinu | E0B and 44C, 40A | 1962 |
| Bocquet & Co. | E. R. | Broadacres, albany | EB0 and 39D, 80E | 1962 |
