| Ross | G. M. | Avon Locs. 19279. 19277, Korrelocking | 4RG | 1924 |
| Ross | H. H. | Springfield, North Dandalup | 2RY and 17C, 102E | 1962 |
| Ross | J. R. | No. 4 Inverleigh Street, South Fremantle | KR1 | 1912 |
| Ross | J. R. | No. 4 Inverleigh Street, South Fremantle | KR1 | 1924 |
| Ross | John | Loc. 1965, Wyalcatchem | V2R | 1924 |
| Ross | T. P. | Blocks 26302/55 and 14580/74, Kununoppin | PR9 | 1912 |
| Ross | T. P. | Blocks 26302/55 and 14580/74, Kununoppin | PR9 | 1924 |
| Ross | Wm. | Roseburn, Kwobrup | Q0R | 1924 |
| Ross | Wm. Hugh | Pilbara, Nullagine | 1WH | 1912 |
| Ross | Wm. Hugh | Pilbara, Nullagine | 1WH | 1924 |
| Ross & Herbert | Adam & C. F. | Trilban Run Lots 3010/96 and 3011/96, Peak Hill | R7X | 1924 |
| Ross Bros. | - | Ardmohr, Kwobrup, E. Katanning | Z3R | 1924 |
| Ross Co. | C. H. | Dalgaranga, Yalgoo | 4PR and 39B, 41A | 1962 |
| Rossell | A. | Sussex 1774, Cowaramup | YV2 | 1962 |
| Rosselloty | J. B. | Commonage, Busselton | JB8 | 1912 |
| Rosselloty | J. B. | Busselton | JB8 | 1924 |
| Rosser | C. H. G. | Yilgarn Loc. 172, Walgoolan | 4KQ | 1925 |
| Rosser | E. L. | Brookside, Northampton | SR5 and 38C, 7A | 1962 |
| Rosser | E. R. | Fletcher Street, East Fremantle | 4ZR | 1962 |
| Rosser | Elltyd | Brookside, Northampton | SR5 | 1912 |
| Rosser | Elltyd | Brookside, Northampton | SR5 | 1924 |
| Rosser | R. | Glenhuntley, Wubin | 6UY and 46B, 26E | 1962 |
| Rosser | Rachel | Murchison and Brookside, Northampton | RR0 | 1912 |
| Rosser | Rachel | Murchison and Brookside, Northampton | RR0 | 1924 |
| Rosser | Saml. Evan | Brookside, Northampton | 9TH | 1912 |
| Rosser | Saml. Evan | Brookside, Northampton | 9TH | 1924 |
| Rosser | T. H. | 2340, Northampton | 5TR and 6D, 4E | 1962 |
| Rosser | Wm. | Hill View, Northampton | 2WR | 1912 |
| Rosser | Wm. | Hill View, Northampton | 2WR | 1924 |
| Rossi | R. & M. | Aroma, Dale, via Beverley | 8RR and 39C, 16E | 1962 |
| Rossi | S. | 399, 1476, 2600, Bussleton | RZ4 and 22B, 38A | 1962 |
| Rossi | Salvatore | Perenjori | XS4 | 1924 |
| Rossi-Querin | L. | Brookley, West Dale, via Beverley | 4LR and 41D, 13E | 1962 |
| Rossiter & Co. | - | Port. M.1765 Plan 3, Three Springs | L3R and 3B, 117E | 1962 |
| Rostron | Fredk. | Garden Area No. 4, Wiluna | FR8 | 1924 |
| Rosweare | M. P. | Southern Cross | RQ7 | 1924 |
| Rothkehl | Robt. | Yibberding, Gunyidi | Y3R | 1924 |
| Rothwell | E. K. & F. L. | 16833, Regans Ford | 9ER and 113B, 38E | 1962 |
| Roughan | Margaret G. | Doctors Farm, Williams | M2R | 1912 |
| Roughan | Margaret G. | Doctors' Farm, Williams | M2R | 1924 |
| Roulston | E. W. | Dudley Farm 2767, 111, Kronkup | E3R and 14B, 13E | 1962 |
| Roulston | Jas. H. | Pine Hill, Kronkup | KR9 | 1924 |
| Roulston & Horn | - | Longwood Farm, Nungarin | RQ9 | 1924 |
| Rourke | H. J. | Wattledell, Moonie's Hills | B3R | 1912 |
| Rourke | H. J. | Wattledell, Moonie's Hills | B3R | 1924 |
| Rouse | Henry | Harvey River, Onslow | 4HR | 1912 |
| Rouse | Hy. | Harvey River, Onslow | 4HR | 1924 |
| Rouse | Jas. Wm. | Mt. Lofty, Kalamunda | RZ9 | 1924 |
| Rousledge Morris & Wills | - | Pinnacles, Lawlers | XR1 | 1912 |
| Rousset | R. & J. | Mont-Choisy, Wanneroo | 9JR and 118D, 67E | 1962 |
