| Ivan | R. & M. | Greystones, Williams | 1ER and 35B, 35A | 1962 |
| Ivanhoe Grazing Co. Pty. Ltd. | - | Ivanhoe Station, East Kimberly | H0E and 1C, 17A | 1962 |
| Iverson | F. S. A. | Commonage, Carnarvon | 6NS | 1924 |
| Ives | Aubrey Leonard | Cullaculong, via Peak Hill | L7H | 1926 |
| Ivey | A. J. | Adelong Station, Jilbadji Loc. 124,142, 126, 56, 713, Menzies | 3A7 and 34C, 24A | 1962 |
| Ivey | A. W. | Jilbadji 172, Boadallin | A3W and 30D, 27E | 1962 |
| Ivey | C. F. | Rock-Hill, Welbungin | C8B and 44C, 110A | 1962 |
| Ivey | E. A. E. | Hurstlyn, Bodallin | 8EB and 37C, 7A | 1962 |
| Ivey | E. B. | Jilbadgie 171, Bodallin | EB0 and 34B, 80E | 1962 |
| Ivey | G. A. | 334, 342, 341, 335, Moorine Rock | GA3 and 120D, 25E | 1962 |
| Ivey | G. E. | Loc. 505, 507 and Yuide Eulenlia Station, Kalgoorlie | VE1 and 13C, 71E | 1962 |
| Ivey | J. C. | Jilbadji Loc. 56, Bodallin | 5UJ and 35B, 14A | 1962 |
| Ivey | R.A. | Yindi, Kalggorlie | RA1 and 19B, 104E | 1962 |
| Ivins | L. | Waterdale, Widgiemooltha | 9DT | 1927 |
| Iwankiw | R. | Plant. Loc. 507, Denmark | 0ER and 49B, 120E | 1962 |
| Iwanow | G. | Avon 20091, Ardath | G0J and 103D, 37E | 1962 |
| Izard | Lilian M. | Gleneva, Yuba No. 2 View, Northampton | 7ZA | 1924 |
| Izard | R. A. E. | 6, 12, 15, 45, 46 Seven Springs, Mundaring | R1Z and 20C, 115E | 1962 |
| Izod | Arthur | Yackaranebo, Narrogin | A1Z | 1912 |
| Izod | Arthur | Yackaranebo, Narrogin | A1Z | 1924 |
| J2J Grazing Co. | - | 1751-2-3, 1914-5, 3188, 3189, 1902, Rosa Brook, via Margaret River | J2J and 25D, 67E | 1962 |
| Jachmann | F. C. | Block 1288, Jerrammungup | F6J and 117B, 12A | 1962 |
| Jack | Boy (Native) | Balladonia, via Norseman | VN2 | 1924 |
| Jack | H. | Kojonup Loc. 8292 and 6695, Nyabbing | X0J and 32D, 49E | 1962 |
| Jack | Jas. | Mingarry, Arthur River | J4A | 1912 |
| Jack | Jas. | Mingarry, Arthur River | J4A | 1924 |
| Jack | Norman C | Salmon Gums | GJ6 | 1928 |
| Jack & Son | J. K. | 14573, 15654-6-62, Bencubbin | JJ9 and 28C, 31A | 1962 |
| Jacka | W. J. | Loc. 13118, Kellerberrin | VJ2 | 1924 |
| Jacka | W. K. | 2630-1-4-7-8, Boallia, via Busselton | 2KJ | 1962 |
| Jackel | Mary Eleanor | Kent Loc. 283, Ongerup | X6J | 1924 |
| Jackman | E. | Lots 24, 25, 27 and 30, Gidgegannup | E7J and 17B, 31E | 1962 |
| Jackman | F. E. | Brooklyn, North Dandalup | DC7 | 1924 |
| Jackman | George B. | Carramarra, Moora | GJ1 | 1928 |
| Jackman | L. A. | Dandala, North Dandalup | DC7 and 7D,6E | 1962 |
| Jackovich | A. | 6210, 6197, 6015, Tardun | A2J and 42A, 4C | 1962 |
| Jackovich | R. | Locs.15300, Lot 2, 159, 291, 158, 13397, 22993, Shackleton | 1JV and 42D, 31E | 1962 |
| Jackson | A. | 13715-6 10753 Locs, Doodlakine | 1FJ and 10C, 14A | 1962 |
| Jackson | A. A. | Bridstone, Nannup | JB1 and 31A, 5B | 1962 |
| Jackson | A. E. & I. V. | Rockyvale, Wyalkatchem | A1J and 10B, 120E | 1962 |
| Jackson | A. G. | Fairview Farm, Dalwallinu | J9L and 23D, 8E | 1962 |
| Jackson | A. H. | Kent A. 1213, Gairdner River, via Jerramungup | A8J and 80B, 31A | 1962 |
| Jackson | A. J. | Sunnyhurst Orchard, Canning Mills | J5U | 1912 |
| Jackson | A. J. | Sunnyhurst Orchard, Canning Mills | J5U | 1924 |
| Jackson | Amy R. | G. L. 1754 /68, Greenhills | A0J | 1912 |
| Jackson | Amy R. | G. L. 1754//68, Greenhills | A0J | 1924 |
| Jackson | B. | Mourabine, Pingelly | BJ4 | 1912 |
| Jackson | B. | Mourambine, Pingelly | BJ4 | 1924 |
| Jackson | B. F. | Lot 9, Inering Estate, Carnamah | X4F | 1924 |
| Jackson | C. & V. | Burville, Oakabella | VJ3 and71C, 10E | 1962 |
