| Roberts & Scown | - | Swan 1317, Lot 144, Midland | SR3 and 36B, 105E | 1962 |
| Roberts & Sheard | - | Southwell, Balbarrup | 7LZ | 1912 |
| Roberts & Sheard | - | Southwell, Balbarrup | 7LZ | 1924 |
| Roberts & Son | G. S. | 10973-4, Bridgetown | 5JJ and 118D, 17E | 1962 |
| Roberts & Sons | T. | Hillside Farm, Nukarni | TR6 and 49C, 4A | 1962 |
| Roberts & Sons | W. | 5024, 4043, 6592, Gnowagerup | WR3 and 102C, 106A | 1962 |
| Roberts & Sons | W. C. F. | Tregoney and Coast Block, via Nannup | L2R and 16B, 11E | 1962 |
| Roberts Farm | - | Eure, Dalwallinu | 1ZR and 31D, 3E | 1962 |
| Robertson | A. D. T. | Balgay Stud, Osbourne Park | RX1 | 1962 |
| Robertson | Amy Jane | Jandakot Loc. 4, Cannington | YR7 | 1924 |
| Robertson | Andrew | Lot 297, Brookhampton | KR8 | 1924 |
| Robertson | Andrew Stewart | Balgownie, Pemberton | 0AR | 1926 |
| Robertson | Annie | Ninth Street, Harvey | 5RQ | 1924 |
| Robertson | C. J. & E. J. | A.L. 13968, 24935, Yilgarn Locs. 204-5, 799. Burracoppin | C7E and 20C, 115A | 1962 |
| Robertson | David B. | Forest Lodge, Jennacubbine | RV9 | 1924 |
| Robertson | Dorothy Irene | Sunning Hill, Brookton | D1R | 1926 |
| Robertson | E. | Onslow Cottage, Kalamunda | ER1 | 1962 |
| Robertson | Eric | North Walgoolan | ER1 | 1928 |
| Robertson | F. R. | Coolangatta, Dalwallinu | F0R and 59F, 28C | 1962 |
| Robertson | G. | Avon Loc. 21801, Kurrenkutten | Q6V | 1924 |
| Robertson | G. B. | Thiseldu, Bencubbin | 5QR | 1924 |
| Robertson | G. H. | Yarrak, Kojonup | 2TR and 25B, 118A | 1962 |
| Robertson | G. W. | Pt. Melbourne 940 and PT. Lot. M.1821 Dandaragan | GR7 and 9B, 28A | 1962 |
| Robertson | Geo. | Avon Loc. 21801, Kurrenkutten | Q9O | 1924 |
| Robertson | J. | Clifton, Katanning | 2RJ | 1912 |
| Robertson | J. | Clifton, Katanning | 2RJ | 1924 |
| Robertson | J. A. | Cho-Sen, Gairdner River | 8JR and 13B, 39E | 1962 |
| Robertson | J. A. | Loc. 13559, Dornock, via Lake Grace | R2C | 1962 |
| Robertson | J. H. | Swan Loc. 1371, Blocks 63 and 52.Chittering | B5J and 42C, 27E | 1962 |
| Robertson | J. J. & J. A. | Homesdale, Katanning | NJ4 and 37D, 33E | 1962 |
| Robertson | J. S. & E. | 3902, 7815, 8899, Buntine | JR9 and 39B, 15A | 1962 |
| Robertson | K. A. | Greylands Lot 854, Serpentine | K5R | 1962 |
| Robertson | M. J. | Sunny Side, Cannington | 3EF and 42D, 48E | 1962 |
| Robertson | Richard | Woodbine Farm, Carnamah | 8RO | 1924 |
| Robertson | Robert | Old Capel Farm, Cape | RR5 | 1912 |
| Robertson | Robert | Old Capel Farm, Capel | RR5 | 1924 |
| Robertson | T. S. | West Bank and Hill Farm, Katanuing | J5Y and 19C, 111A | 1962 |
| Robertson | W. | Jerviston, Mundijong | R4Z | 1962 |
| Robertson | W. M. | Lude, Darlington | 2XO | 1962 |
| Robertson | W. M. & C. M. | Yalup Park, Wagerup | G1R and 38D, 3E | 1962 |
| Robertson | Wm. Jno. | M. H. Leases 196 & 199, Ravensthorpe, and at Queens Park | 4RV | 1924 |
| Robertson & Co | C. | Woodbine Farm, Carnamah | 8RO and 26B, 8E | 1962 |
| Robertson & Young | W. M. & D. M. | Minden, Beverley | 0QU | 1925 |
| Robertson Bros. | - | Locs. 343, 526, 2620, Pithara | RB7 | 1926 |
| Robertson Bros. & Trott | - | Branchal, Wongan Hills | Z6N | 1924 |
| Robeson | K. L. | 4937, 3163, Beermullah, via Gingin | KR2 and 112B, 21C | 1962 |
| Robey Bros. | - | Bushwood, Moora | RY8 | 1924 |
| Robins | Alfred John | Korejekup, Harvey | A5R | 1928 |
| Robins | B. | Beverley Park and Kurren Kuttan, Beverley | BR5 | 1912 |
| Robins | B. | Beverley Park & Kurren Kutten, Beverley | BR5 | 1924 |
