| Jackson, Byron | Vol.24.No.1.Page 11 |
| Jackson's California windmill | Vol.24.No.1.Page 11 (illus) |
| Jacox, Les | Vol.23.No.3.Page 5 (illus) |
| Jacox, Linda | Vol.23.No.3.Page 5 (illus) |
| J. A. Holden & Co. | - see - Holden, J. A. & Co. |
| JA-E Pattern windmill | - see - Southern Cross JA Pattern windmill |
| Jamieson, Robert | Vol.21.No.1.Page 9 |
| Vol.21.No.3.Pages 10, 11 | |
| Jantz, Darrin | Vol.23.No.3.Page 5 |
| JA Pattern windmill | - see - Southern Cross JA Pattern windmill |
| J. Bartram and Son Pty. Ltd. | - see - Bartram, J. and Son Pty. Ltd. |
| Jeffrey, Peter Peace | Vol.22.No.1.Page 6 |
| Jellalabad property | Vol.21.No.1.Pages 8, 9 |
| Jespersen, Anders | Vol.23.No.1.Page 7 |
| J. E. Watson & Co. Ltd. | - see - Watson, J. E. & Co. Ltd. |
| J. G. Childs & Co. Ltd. | - see - Childs, J. G. & Co. Ltd |
| J. H. Horwood & Co. | - see - Horwood, J. H. & Co. |
| Jindera Pioneer Museum | Vol.21.No.4.Page 10 |
| J. Johnston & Sons | - see - Johnston, J. & Sons |
| John Buncle & Son | - see - Buncle, John & Son |
| John Danks and Son Pty. Ltd. | - see - Danks, John and Son Pty. Ltd. |
| John Duthie & Co. Ltd. | - see - Duthie, John & Co. Ltd. |
| John Edmonds and Co. | - see - Edmonds, John and Co. |
| John Keep & Son | - see - Keep, John & Son |
| John McIlwraith Industries | Vol.20.No.2.Page 6 |
| - see also Metters Ltd. | |
| John Shearer Ltd. | - see - Shearer, John Ltd. |
| John Shearer M windmill | - see - Shearer M windmill |
| - see - Metters M windmill | |
| John Shearer windmill | - see - Shearer M windmill |
| Johnston, James | Vol.20.No.1.Pages 3, 4 |
| Johnston, J. & Sons | Vol.20.No.1.Page 3 |
| Jondaryan Woolshed Museum | Vol.20.No.3.Page 11 |
| Jones, Garth | Vol.20.No.1.Page 9 |
| J. R. Green | - see - Green, J. R. |
| J. Spence Bryant & Co. | - see - Bryant, J. Spence & Co. |
| Jupp, Samuel Hadley | Vol.24.No.1.Pages 2-3 (illus article) |
| Jupp windmill | Vol.24.No.1.Pages 2 (illus), 3 (illus) |
| J. & W. Bateman | - see - Bateman, J. & W. |