| Quadrio | Egidio | Seglio, Waterloo | EQ6 | 1924 |
| Quadrio | Peter | Commonage, Cue | P3Q | 1924 |
| Quadrio Bros. | - | Loc. 15, 297-8, Dardanup | EQ6 and 40D, 18E | 1962 |
| Quaife | G. F. | 9400, 9407-8-9 Part, 9412, Middlesex, via Manjimup | FQ1 | 1962 |
| Quaife | John | H. Farm, Donnybrook | BQ9 | 1912 |
| Quaife | John | H. Farm, Donnybrook | BQ9 | 1924 |
| Quain | J. & M. | Ninghan Loc. 79, 91, 1536-8, 1532, Ballidu | 2QB and 12C, 24E | 1962 |
| Quain | J. P. | Rathkeale, Ballidu | 2QB | 1924 |
| Quain | V. | Swan Loc. 1352, Bullsbrook East | XV1 and 16B, 14A | 1962 |
| Quarmby & Son | R. D. | Stanley Park, Coorow | O1U and 50B, 22A | 1962 |
| Quarrells | W. J. | Forrest Lodge, Jarnadup | W2Q | 1912 |
| Quarrells | W. J. | Forrest Lodge, Jardanup | W2Q | 1924 |
| Quartermaine | A. C. N. | Palomar, Northam | AQ4 and 28A, 4B | 1962 |
| Quartermaine | A. E. | Yowengup, Katanning | 6FQ and 38D, 29E | 1962 |
| Quartermaine | A. F. | Wattle Creek, Katanning | A3Q | 1912 |
| Quartermaine | A. F. | Wattle Grove, Katanning | A3Q | 1924 |
| Quartermaine | A. L. & E. E. | 15458, 23846, 22489, 17615, Corrigin | A5O and 43C, 84E | 1962 |
| Quartermaine | A. R. F. | Allendale, Kattaning | 6FO and 38D, 29E | 1962 |
| Quartermaine | A. R. F. | Beaumont, Katanning | A3Q and 28C, 106E | 1962 |
| Quartermaine | Albert | Boyalling, West Wagin | A1Q | 1924 |
| Quartermaine | Arnold C. N. | The Folly, Wagin East | TH2 | 1924 |
| Quartermaine | Arnold Charles Nicholas | Palomar, Northam | AQ4 | 1926 |
| Quartermaine | C. E. | Mayfield, Wagin | EQ3 | 1912 |
| Quartermaine | C. E. | Mayfield, Wagin | EQ3 | 1924 |
| Quartermaine | C. E. A. | Newcombes, Wagin | 0ET | 1924 |
| Quartermaine | C. L. | Fernhill, Woodanilling | XQ7 and 50C, 19A | 1962 |
| Quartermaine | D. | Glendower, Katanning | FQ1 and 6C, 4A | 1962 |
| Quartermaine | D. C. | Marracoonda, near Katanning | DQ1 | 1924 |
| Quartermaine | D. C. | Marracoonda, Katanning | DQ1 and 102C, 13A | 1962 |
| Quartermaine | D. G. & W. F. | Spring Hill, Katanning | VO1 and 71C, 41E | 1962 |
| Quartermaine | E. | Boyaming, Woodanilling | E4Q | 1912 |
| Quartermaine | E. | Boyaming, Woodanilling | E4Q | 1924 |
| Quartermaine | E. E. G. | Range View, Harvey | EQ3 and 15D, 20E | 1962 |
| Quartermaine | E. W. | Kojonup Loc. 323-4, Katanning | 1EQ and 16B, 21E | 1962 |
| Quartermaine | Eli | Nanacoonda, Katanning | EQ2 | 1912 |
| Quartermaine | Eli | Marracoonda, Katanning | EQ2 | 1924 |
| Quartermaine | Ernest | Daddarup, Gnowangerup | EQ7 | 1924 |
| Quartermaine | F. B. | Swamp Farm, Katanning | FQ1 | 1912 |
| Quartermaine | F. B. | Swamp Farm, Katanning | FQ1 | 1924 |
| Quartermaine | F. L. & R. A | Buckland Lots 2 and 3, Frenches Siding, via Northam | 1GQ and 12D, 116E | 1962 |
| Quartermaine | G. E. | Rockcliffe, Kojonup | GE8 | 1924 |
| Quartermaine | H. | Wedgecarrup, Wagin | HQ6 | 1912 |
| Quartermaine | H. | Wedgecarrup, Wagin | HQ6 | 1924 |
| Quartermaine | J. | Alcoole, Popanyinning | 6QJ and 47B, 37E | 1962 |
| Quartermaine | K. A. | Broadacres, Nyabing | K1Q and 50D,117E | 1962 |
| Quartermaine | K. J. & R. E. | Narrogin 42281, Williams 1620 and Dumbleyung 118, 124-5, Narrogin | EJ7 and 27B, 117E | 1962 |
| Quartermaine | L. G. & M. M. | Penwortham, Dunninup | 1RD and 12B, 110E | 1962 |
| Quartermaine | L. H. | Undatarra, Tardun | L1Q and 15B, 26E | 1962 |
| Quartermaine | L. T. | Bunkin, Dumbleyung | L0Q and 43C, 15E | 1962 |
| Quartermaine | L. T. & M. S. | Rushington, Dumbleyung | 7EC and 54F, 44B | 1962 |
