Icthyologist
- Laporte, François Louis (1810 - 1880), Diplomat, Entomologist and Icthyologist
- McCulloch, Allan Riverstone (1885 - 1925), Icthyologist and Entomologist
- Ogilby, James Douglas (1853 - 1925), Icthyologist and Taxonomist
- Wade, Robert Thompson (1884 - 1967), Icthyologist
- Whitley, Gilbert Percy (1903 - 1975), Icthyologist and Entomologist
Immunologist
- Ada, Gordon Leslie (1922 - ), Microbiologist, Virologist and Immunologist
- Blanden, Robert Vincent (1938 - ), Immunologist
- Doherty, Peter Charles (1940 - ), Immunologist
- Mitchell, Graham Frank (1941 - ), Immunologist
- Morris, Bede (1927 - 1988), Immunologist and Pathologist
- Nossal, Gustav Joseph Victor (1931 - ), Medical scientist and Immunologist
- Penny, Ronald (1936 - ), Physician and Immunologist
Industrial chemist
- Arkinstall, Alan Leigh (1915 - 1982), Industrial chemist
- Avery, David (1871 - 1956), Industrial chemist
- Baker, Kingsley F. (1920 - 1963), Industrial chemist
- Baklien, Asbjorn (1929 - 2005), Industrial chemist
- Barclay, John Thomas Evaine (1913 - 1944), Industrial chemist
- Barraclough, Edward (1915 - 1972), Industrial chemist
- Batty, Alton McAllan (1913 - 1984), Industrial chemist
- Baudinet, W.E.C. (? - 1941), Industrial chemist
- Bellingham, Frank Frederick (1918 - 1984), Industrial chemist
- Benjamin, Louis Reginald Samuel (1892 - 1970), Industrial chemist and Technologist
- Bernard, William (1915 - 1967), Industrial chemist
- Brady, B. H., Industrial chemist
- Challis, Charles Clifford (1901 - 1965), Industrial chemist
- Coggan, Tom Colston (1897? - 1952), Industrial chemist
- Cohen, Wilby Edison (1902 - 1969), Industrial chemist
- Collie, George (1893 - 1961), Industrial chemist
- Crawford, John Maxwell (1946 - 1975), Industrial chemist
- Croft, Robert Clyde (1918 - 1991), Industrial chemist
- Cuming, George James (1886 - 1969), Industrial chemist
- Cuming, James (1) (1861 - 1920), Industrial chemist and Company director
- Cuming, James (2) (1900 - 1952), Industrial chemist
- Davies-Graham, Lewis Richard (1903 - 1976), Industrial chemist
- Davis, Douglas Eric (1904 - 1967), Industrial chemist
- Davis, Winfield Goerge (1892? - 1948), Industrial chemist
- de Bavay, John Francis Xavier (1888 - 1955), Industrial chemist
- Dewar, Robert Alfred (1908 - 1981), Industrial chemist
- Drummond, Leonard James (1925 - 1982), Industrial chemist
- Edquist, Richard Courtney (1913 - 1996), Industrial chemist
- Elliott, James Frederick (1858 - 1928), Industrial chemist and Chemical engineer
- Falvey, William John (1927? - 1961), Industrial chemist
- Finch, Raymond Frederick (1917 - 1982), Industrial chemist
- Finn, A. E., Industrial chemist
- Fisher, Nellie (1907 - 1995), Industrial chemist
- Foxton, John Hugh (1931? - 1993), Industrial chemist
- Freeman, Erwin Felix (1916 - 1971), Industrial chemist
- Garran, Richard Randolph (1903 - 1991), Industrial chemist
- Gentles, William Cockburn (c. 1876 - 1954), Industrial chemist
- Gibson, John, Industrial chemist
- Goddard, Charles Henry (? - 1947), Industrial chemist
- Graham, Colin Leslie (1937 - 1983), Industrial chemist and Science educator
- Haimann, Ernst (1910 - 1987), Industrial chemist
- Hampshire, Noel Macquarie (1912 - 1967), Industrial chemist
- Harper, Gordon Denholm (1896 - 1969), Industrial chemist
- Harry, Frederick Craig (1899 - 1960), Industrial chemist
- Hawkins, Jack (c. 1910 - 1991), Metallurgist and Industrial chemist
- Henderson, Thomas W. (1901 - 1960), Industrial chemist
- Henry, Rodney Wilton (1915 - 1994), Industrial chemist
- Higginson, William Arthur (1912 - 1993), Industrial chemist
- Hoare, Martin John (1896? - 1942), Industrial chemist
- Hufton, Harold Seward (? - 1947), Industrial chemist
- Hull, Seymour Dunlap (1900 - 1950), Industrial chemist
- Hunt, Philip Charles Holmes (1874 - 1941), Industrial chemist
- Jack, Andrew Keith (1885 - 1966), Industrial chemist
- Jackson, William J. (1880 - 1966), Industrial chemist
- Kaufler, Felix (1878 - 1957), Industrial chemist
- Kiss, Louis Tibor (1929 - 1984), Industrial chemist
- Latimer, Roy Wooster (1891 - 1962), Industrial chemist
- Lavers, H., Industrial chemist
- Lavis, David Milton (1925? - 1992), Industrial chemist and Science administrator
- Le Mesurier, C.R. (1896 - 1955), Industrial chemist
- Leach, Stephen Laurence (1906 - 1967), Industrial chemist
- Lipson, Menzie (1915 - 2004), Industrial chemist
- Mansfield, William Walladge (1924 - 1974), Industrial chemist
- Marr, Horace Victor (c. 1883 - 1960), Industrial chemist
- Mayne, Tom (1901 - 1995), Industrial chemist
- Meakins, Reginald John (1913 - 1994), Industrial chemist
- Meehan, Francis Thomas (c. 1898 - 1957), Industrial chemist
- Melhuish, Theodore d'Aveline (1897 - 1969), Industrial chemist
- Meller, Alexander (1906 - ), Industrial chemist
- Mellers, Alan Charles (1917 - 1979), Industrial chemist
- Moore, Humphrey Owen (1908 - 1963), Industrial chemist
- Morgan, Harold Leslie (1901 - 1967), Industrial chemist
- Mossop, John Garland (c. 1879 - 1957), Industrial chemist
- Newbery, James Cosmo (1843 - 1895), Industrial chemist and Public servant
- Norgard, John Davey (1914 - ), Mining chemist and Industrial chemist
- Northey, Harold (? - 1970), Industrial chemist
- Owen, T. M., Industrial chemist
- Scott, Robert Steel, Industrial chemist
- Shmith, Harry Woolf, Industrial chemist
- Somerset, Henry Beaufort (1906 - 1995), Industrial chemist and Company director
- Taylor, Norman (1885 - 1960), Industrial chemist
- Todhunter, Benjamin Edward (1865 - 1952), Industrial chemist
- Varcoe, Graeme Laurence (1937 - ), Research scientist and Industrial chemist
- Vernon, James (1910 - 2000), Industrial chemist
- Walton, Thomas Utrick (1852 - 1917), Industrial chemist
- Wark, Ian William (1899 - 1985), Industrial chemist and Science administrator
- Weiss, Donald Eric (1924 - ), Industrial chemist
- Whitton, William Ivo (1924 - ), Industrial chemist
- Wright, Peter George, Industrial chemist
Industrial designer
- Beauvais, Charles Frederick, Industrial designer, Artist and Futurist
Industrial innovator
- Shoobridge, William Ebenezer (1846 - 1940), Agriculturalist and Industrial innovator
Industrialist
- Blackwood, Robert Rutherford (1906 - ), Industrialist
- Gepp, Herbert William (1877 - 1954), Metallurgist and Industrialist
- Hey, Harry (1892 - 1960), Metallurgist and Industrialist
- Knox, Edward William (1847 - 1933), Industrialist
- Krebs, Friedrich, Industrialist
- Robertson, Macpherson (1859 - 1945), Science patron and Industrialist
- Robinson, William Sydney (1876 - 1963), Industrialist
- Storey, John Stanley (1896 - 1955), Industrialist
- Tivey, John Proctor (1883 - 1968), Engineer and Industrialist
- Walker, Fred (1884 - 1935), Industrialist
Information technologist
- Cooper, Joan (1949 - ), Educator and Information technologist
Innovator
- Rowson, R., Innovator
- Shoobridge, Robert Wilkins Giblin (1847 - 1936), Agriculturalist and Innovator
- Shoobridge, William Ebenezer (1846 - 1940), Agriculturalist and Industrial innovator
Inorganic chemist
- Anderson, John Stuart (1908 - 1990), Inorganic chemist
- Bloom, Harry (1921 - 1992), Physical chemist and Inorganic chemist
- Grant, Michael William (1944 - 1984), Inorganic chemist
- Harris, Clive Melville (1926 - 1973), Inorganic chemist
- Hyde, Bruce Godfrey (1925 - ), Inorganic chemist
- Kolm, Jan Eric (1918 - ), Inorganic chemist and Company director
- Mellor, David Paver (1903 - 1980), Inorganic chemist
- O'Connor, Maxwell James (1936 - 1985), Inorganic chemist
- Sargeson, Alan McLeod (1930 - ), Inorganic chemist
Instrument maker
- Alldis, T.C. (Charlie), Instrument maker
- Blanch, James (1784? - 1841), Scientific instrument maker and Metrologist
- Husbands, Henry (1870? - 1890?), Optician and Scientific instrument maker
- Rogers, Arthur Lionel, Instrument maker and Scientific technician
- Waterworth, Eric Newham (1905 - ), Physicist and Instrument maker
- William, James Leslie (1915 - 1994), Instrument maker
- Yeates, C.S.S. (1872 - 1961), Astronomer and Scientific instrument maker
Inventor
- Alcock, Alfred Upton (1865 - 1962), Electrical engineer and Inventor
- Babbage, Charles (1791 - 1871), Mathematician and Inventor
- Branson, Charles, Inventor
- Brennan, Louis (1852 - 1932), Mechanical engineer and Inventor
- Buncle, John (1822 - 1889), Inventor and Manufacturer
- Elliott, Sizar (1814 - 1901), Inventor and Merchant
- Gillies, Alexander, Dairyman and Inventor
- Harrison, James (1816? - 1893), Inventor and journalist
- Hill, Lance, Inventor and Mechanical engineer
- Hinkler, Herbert John Louis (1892 - 1933), Aviator and Inventor
- Howard, Arthur Clifford (1893 - 1971), Inventor
- Hume, Walter Reginald (1873 - 1943), Inventor and Entrepreneur
- Julius, George Alfred (1873 - 1946), Engineer and Inventor
- Kauper, Henry Alexis (1888 - 1942), Radio engineer and Inventor
- Kirkby, Edward Hope (1853 - 1915), Inventor and Electrical engineer
- Klaphake, Wolf (1900 - 1967), Inventor and Chemist
- McFie, Edward, Inventor
- Michell, Anthony George Maldon (George) (1870 - 1959), Engineer and Inventor
- Moore, John, Inventor
- Morrow, James (1843 - 1910), Inventor and Manufacturer
- Morton, William Lockhart (1820 - 1898), Explorer and Inventor
- Osborne, John Walter (1828 - 1902), Inventor
- Owen, Evelyn Ernest (Evo) (1915 - 1949), Inventor
- Ridley, John (1806 - 1887), Flour-miller, Inventor and Preacher
- Savage, Robert (1818 - 1888), Agricultural writer and Inventor
- Setright, Henry Roy (? - 1942), Engineer and Inventor
- Shearer, David (1850 - 1936), Inventor and Agricultural machinery maker
- Sinclair, John, Inventor
- Smith, Julian Augustus Romaine (1873 - 1947), Surgeon, Photographer and Inventor
- Stuckey, Joan, Inventor
- Sutherland, George (1855 - 1905), Inventor and Journalist
- Sutton, Henry (1856 - 1912), Inventor
- Thompson, John Low (1847 - 1900), Agricultural educator and Inventor
- Unaipon, David (1872 - 1967), Inventor
- Withnall, Gordon, Inventor
- Wolseley, Frederick York (1837 - 1899), Inventor
Ironfounder
- Russell, Peter Nicol (1816 - 1905), Ironfounder and Benefactor
- Russell, Robert ( - 1840), Ironfounder
- Walker, John (1823 - 1907), Ironfounder
Ironmaster
- Sandford, William (1841 - 1932), Ironmaster
Irrigation expert
- Chaffey, George (1848 - 1932), Irrigation expert
- Chaffey, William Benjamin (1856 - 1926), Irrigation expert
- Gibson, John Allan, Engineer and Irrigation expert
- Jones, Gynlais Oughton (1933 - 2000), Irrigation expert
- McKinney, Hugh Giffen (1846 - 1930), Irrigation expert
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