| Ketley | M. J. | Loc. 2170, Kent River, Denmark | 7JK | 1962 |
| Kett | Andrew | Commonage, York | 5AK | 1912 |
| Kett | Andrew | Commonage, York | 5AK | 1924 |
| Kett | Andrew | Kent Loc, 56A Pingarup | 8YF | 1924 |
| Kett | F. W. | Ashby, Gnowangerup | 8YF and 3C, 33E | 1962 |
| Kett | R. H. & B. | Carinya, Williams | 1RB and 30A, 10B | 1962 |
| Kett & Son | H. G. & M. | Wind-Vale, Wickepin | GK1 and 27B, 116A | 1962 |
| Kett & Sons | A. E. | Weewanda, Gabbin | 5AK and 43C, 111E | 1962 |
| Ketteridge | Albert | Brunswick Estate, Lot 4, Brunswick Junction | 9KK | 1925 |
| Ketteringham | W. | Roe Locs. 211, 216, Narembeen | W7K and 116A, 16B | 1962 |
| Ketteringham | William | Roe Locs. 211, 216, 739, Mount Walker; Narembeen | W7K | 1926 |
| Ketteringham & Son | R. J. | Roe Loc. 1446, 260, Narembeen | RK5 and 106A, 36B | 1962 |
| Kettle | Edwin Francis | Kooringa, Kununoppin | K9P | 1924 |
| Keutish | H. S. | Calivil Park, Jaloran | H4K | 1924 |
| Kevern | R. R. | Glenidle, Duranillan | 0RK and 49C, 48E | 1962 |
| Kevill | A. G. | Loc. 15302, Erikin | AK4 and 5B, 25E | 1962 |
| Kevill | G. H. | Yaigaroud Loc. 646, 1238, 1404, Margaret River | NK6 | 1962 |
| Kevill& Co. | W. G. | Braidwood, Yoting Siding, Mawson Siding, Atherton, Quairading | GK0 and 9B, 114A | 1962 |
| Kew | Robt. | Pingelly | R1K | 1912 |
| Kew | Robt. | Pingelly | R1K | 1924 |
| Kewley | A. | Booraloming, Dowerin | AK8 | 1912 |
| Kewley | A. | Booralaming, via Dowerin | AK8 | 1924 |
| Kewley | Wm. Jos. | Selection 1494, No 3 Group Settlement Kudarddup Augusta | KV2 | 1924 |
| Key | C. H. | Royston Farm, Kellerberrin | L1W and 13B, 120A | 1962 |
| Key | K. W. | Sussex 2439-40, Karridale | K3W | 1962 |
| Key | Mary Ellen | Rockingham | 3EK | 1924 |
| Key | Wm. | 7th Avernue, Maylands | KP0 | 1924 |
| Keys | David | Commonage, Beria | DK5 | 1924 |
| Keys & Co. | - | Keysbrook, Mundijong | K2D | 1924 |
| Keyser | S. D. | 164, Balingup | DK0 and 32E, 38D | 1962 |
| Keyte | Frances G. | The Oasis, Binnnu via Geraldton | 9KE | 1924 |
| Keyte | Richard Ed. | Lastroon, Hutt | 9YV | 1924 |
| Keyte | Wm. | Blocks 24673/55, 13461/74, Yuba | W2K | 1912 |
| Keyte | Wm. | Blocks 24673\55, 13461\74, Yuba | W2K | 1924 |
| Khan | Bandoo | Bornagee, Tammin | BK1 | 1912 |
| Khan | Bandoo | Bornagee, Tammin | BK1 | 1924 |
| Khoda, Nozer, and Ameer Mahomet | - | Leonora | KA1 | 1924 |
| Khudai, Nazur, and Ameer Mohomed | - | Commonage, Wiluna | KN1 | 1924 |
| Kiamer | E. | Water Reserve, Kookynie | Q4X | 1924 |
| Kickett | Thos | Ragged Rocks, Greenhills | TK2 | 1912 |
| Kickett | Thos. | Ragged Rocks, Greenhills | TK2 | 1924 |
| Kidby | E. G. | Nelson Locs. 7346-50-1, Ferguson, via Dardanup | E0K and 35A, 36B | 1962 |
| Kidd | J. | 14412-3, Denside, Kununoppin | J3K and 114A, 41B | 1962 |
| Kidd | John | Melia Farm, Eradu | KD8 | 1924 |
| Kiddie | A. R. | Carrallaen, Badgebup | 2NK and 26D, 48E | 1962 |
| Kiddie | Andrew | Lincoln Downs, Broome | K3A | 1924 |
| Kiddie | Chas. | Badgebup | 2NK | 1924 |
| Kiddie | David | Blocks 45, 50 and 145, Katanning | 2DK | 1924 |
| Kiddie | L. C. | Riverside, East Katanning | 5ML and 35B, 17E | 1962 |
| Kiddle | David | Blocks 45, 50, & 145, Katanning | 2DK | 1912 |
