| Tanner | Wilfred S. | Avon Loc. 14132, Muckinbudin | U5Q | 1925 |
| Tanner & Bartlett | - | Red Hill Farm, Kulin, Via Wickepin | 6TE | 1924 |
| Tanner Bros. | - | Cranleigh, South Kellerberrin | T4V | 1924 |
| Tansell & Lewis | - | 2252-3, 3841, 4193, Cowaramup | TL4 and 46D, 41E | 1962 |
| Tapley | T. R. B. | Lincoln Fields, Walpole | 5TT and 20C, 37E | 1962 |
| Tapley & Arnold | - | Cundenup, Via Kirup | T9X | 1924 |
| Tapper | C. C. | 86 My, Coolup | 5CT and 26B, 15E | 1962 |
| Tapper | Daniel | Norfolk Farm, Bibra Lake | 1DT | 1912 |
| Tapper | Daniel | Norfolk Farm, Bibra Lake | 1DT | 1924 |
| Tapper | E. R. | Conaught Stud, Maddington | ET4 | 1962 |
| Tapper | H. T. | Hilton Park, North Baandee | 3HT and 28D, 37E | 1962 |
| Tapping | T. | Tapping's Farm, Wanneroo | TQ4 | 1924 |
| Tapping & Son | - | Swan Loc1, Wanneroo | TT5 | 1912 |
| Tapping & Son | - | Swan Location 1, Wanneroo | TT5 | 1924 |
| Tarling | Lewis R. | Tinsbury, Nokanning | 4TE | 1924 |
| Tarmoola Pastoral Co. | - | Leonora | YY8 | 1924 |
| Tarmoola Pastoral Co. Ltd. | - | Tarmoola Station, Leonora | YY8 and 5D, 5E | 1962 |
| Tarraji River Station | - | Obagooma Station, Derby | 5JK and 20B, 5A | 1962 |
| Tarraji River Station | - | Tarraji River Station, Derby | S3H and 46C, 108E | 1962 |
| Tasker | D. H. | Hill View Pingelly | DT5 | 1912 |
| Tasker | D. H. | Hill View, Pingelly | DT5 | 1924 |
| Tasker | Fred. | Wheatfields, Rockingram | T6Q | 1924 |
| Tasker | Gwen A. | Lot 372, Denmark | 8ET | 1924 |
| Tassal | John C. | The Oak Hill, Cranbrook | T5B | 1912 |
| Tassal | John C. | The Oak Hill, Cranbrook | T5B | 1924 |
| Tassell | A. | Carragen, Wickepin | 1NT | 1924 |
| Tassell | A. E. | Lot 258 Minniniup Road, South Bunbury | UT1 | 1962 |
| Tassone | F. S. & E. | Wellington Loc. 4535, Kirup | F5T and 37C, 67E | 1962 |
| Tassone | R. | Sussex Loc. 1225, Marybrook | RY2 and 3C, 67E | 1962 |
| Tassos | G. S. | Brookville, Bridgtown | 1WG and 28D, 24E | 1962 |
| Tate | Albert Leslie | Stirling View, Pallinup | ZT6 | 1924 |
| Tate | Ernest Jas. | Avon Location 15735, Korrelocking | 4ET | 1924 |
| Tate | F. | Nelson Loc. 1931, Bridgetown | FT3 and 21C, 111A | 1962 |
| Tate | J. A. | Kia-Oro, Nangeenan | W4T | 1912 |
| Tate | J. A. | Kia-Ora, Nangeenan | W4T | 1924 |
| Tate | S. E. | Fenwick Farm, Calingiri | X6E | 1924 |
| Tate | T. | Lot 2900 and 2907, Rosa Brook | WU7 and 111D, 27E | 1962 |
| Tate | W. J. E. | Willowbee, Nangeenan | 9TT | 1912 |
| Tate | W. J. E. | Willowbee, Nangeenan | 9TT | 1924 |
| Tatham | Geo. A. | Ravenswood, Wickepin | 5TT | 1912 |
| Tatham | Geo. A. | Ravenswood, Wickepin | 5TT | 1924 |
| Tatham | J.E. | Riverside, Pinjarra | 6JT | 1912 |
| Tatlock | J. E. | Riverside, Pinjarra | 6JT | 1924 |
| Tatlock | T. H. | Marble, Bar | 3TB | 1912 |
| Tattersall | F. T. | Block 575-6 Plantagenet, Denmark | FT5 and 21C, 31A | 1962 |
| Tattle | G. W. S. | Elect, Ravensthorpe | S6F and 3B, 32E | 1962 |
| Tavendale | T. H. | Marble Bar | 3TB | 1924 |
| Taverner | L. W. | Ta-Ringer, Waterloo | LT8 and 17D, 21E | 1962 |
| Taylor | P. & D. | Lots 18189 and 18190, Bungulluping, via Bruce Rock | T9D | 1924 |
| Taylor | A. | Blocks 6093 6403 10473 and 6412, Jacob's Well Siding | 9AT | 1912 |
