| Townsend | Thos. | Hill and Dale Farm, East Cuballing | 3TT | 1924 |
| Townsend | W. A. | Swan Loc. 1383, Wanneroo | WT2 | 1962 |
| Townsend | William A. | Swan View, Wanneroo | WT2 | 1927 |
| Townsend | Wm. F. | Grass Patch Farm, Grass Patch, via Norseman | QT4 | 1924 |
| Townsend & Co. | A. C. | Yannerup, Narrikup | X2D | 1924 |
| Townsend & Son | T. F. | Springdale, Wickepin | 3TT and 32D, 55F | 1962 |
| Townsend & Sons | - | Voordale, Tenterden | T3D | 1912 |
| Townsend & Sons | - | Voordale, Tenterden | T3D | 1924 |
| Townstead | Jas. | Commonage, Bulong | 3TS | 1924 |
| Towton | F. H. | 52 Hardy Road, Belmont | 6FT | 1962 |
| Toy | N. | Prospect, Bindoon | H7U and 31B, 25A | 1962 |
| Toy | Percy | Commonage, Mount Magnet | T0Y | 1912 |
| Toy | Percy | Commange, Mt. Magnet | T0Y | 1924 |
| Toy | W. J. | Kurrajong, Bindoon | WT1 and 30B, 11E | 1962 |
| Toy | Wm. Fredk. | Prospect Farm, Mooliabeenie | H7U | 1924 |
| Toyer | Walter | Overdale, Bridgetown | OE7 | 1924 |
| Tozer | E. C. | 5864, 5863, 3721, 5760, East Pingelly | 3BA and 59F, 11B | 1962 |
| Tozer | Edwin | Loc. 743, Millbrook | UT8 | 1924 |
| Tozer | M. | Bungunup, Coogee | 1MX | 1912 |
| Tozer | M. | Bungunup, Coogee | 1MX | 1924 |
| Tozer | Thos. | Sunnyside, Pingelly | T7T | 1912 |
| Tozer | Thos. | Sunnyside, Pingelly | T7T | 1924 |
| Tozer & Co. | G. E. | Marlow, Corrigin | G1T and 31B, 50A | 1962 |
| Tracey | Michael | Homestead, Bullabulling | 1MT | 1912 |
| Tracey | Michael | Homestead, Bullabulling | 1MT | 1924 |
| Tracy | George J. | No. 88 Loc.Jerdacuttup, Hopetoun | T7H | 1927 |
| Tracz | J. | Bakers Hill Lots 7-13, Ptn. Avon Loc. 252, Clackline | 4JT and 22C, 19E | 1962 |
| Traill | S. G. | Yilgarn Locs. 99, 465, 488, 1016, Bodallin | S9T and 49D, 39E | 1962 |
| Traillnash | R. | Glen Eland, Kelmscott | X4T | 1924 |
| Trainer | B. W. G. | Sussex Loc. 3059, Walsall, via Busselton | 4TR | 1962 |
| Trainer | D. C. | Lot 626, Palmyra | D1T | 1962 |
| Trainer | David C. | Boyanup | D1T | 1928 |
| Trait | Ellen | Nina Springs, Isseka | ET5 | 1912 |
| Tranter | Arthur D. | 529, Scaddan | 8XQ | 1925 |
| Tranter | C. O. | Evedene, Pingrup | C1T and 20D, 37E | 1962 |
| Tranter | H. A. C. | Morrel Banks, Kunjinn | 8AT | 1912 |
| Tranter | H. A. C. | Morrel Banks, Kunjin | 8AT | 1924 |
| Tranter | H. A. C. | Monjong, Narrogin | GT7 | 1927 |
| Tranter | John | Beleie Station, Minderoo | 5TM | 1912 |
| Tranter | John | Belele Station, Minderoo, via Nannine | 5TM | 1924 |
| Tranter Bros. | - | Gerangamite, Kunjin | 2TZ | 1924 |
| Trappist Mission | - | Beagle Bay, Broome | XT1 | 1912 |
| Trappist Mission | - | Beagle Bay, Broome | XT1 | 1924 |
| Trappitt | J. J. | Mortlake, Frankland | 2JT and 21B, 50A | 1962 |
| Tratham | J. E. | Poonawarrup, Tambellup | T3B | 1912 |
| Tratham | J. E. | Poonawarrup, Tambellup | T3B | 1924 |
| Trautman | Gustave A. | Lewis & Reid's Mill, Collie | 6KT | 1924 |
| Travers | Ernest | Clifton Farm, Jacob's Well | ET3 | 1912 |
| Travers | Ernest | Clifton Farm, Jacob's Well | ET3 | 1924 |
| Travers | F. (snr.) | Wellington No. 1, Australind | F6T | 1962 |
