Browse Trade Unions - I
- Illawarra Coal Miners Mutual Protective Association (1885 - )
- Illawarra Coke Workers Union of NSW (1907 - )
- Illawarra Collieries Staff Association of NSW (1921 - )
- Illawarra Colliery Employees Association (1901 - 1921)
- Illawarra Deputies & Shotfirers Association (1908 - )
- Illawarra Deputies & Shotfirers Protective Association (1908? - 1988?)
- Independent Education Union of Australia (1993 - )
- Independent Schools Staff Association ACT (1982 - )
- Independent Society of Operative Stonemasons of Victoria (1855 - ?)
- Independent Teachers Federation (i) (1988 - 1991)
- Independent Teachers Federation (ii) (1991 - 1993)
- Industrial Arbitration Registrars Association (1959 - 1992)
- Industrial Life Assurance Agents Association (1941 - 1945)
- Industrial Life Assurance Agents Association, NSW Branch (1941 - )
- Industrial Life Assurance Agents Union (1945 - 1970)
- Industrial Staff Union (1974 - )
- Industrial Workers Union of Australia (1959 - )
- Institute of Inspectors of Schools of NSW (1943 - )
- Institute of Inspectors of Stock of NSW (1921 - )
- Insurance Agents, Collectors & Canvassers Association of NSW (1926 - )
- Insurance Agents, Collectors & Canvassers Association of NSW (1931 - )
- Insurance Officials Association
- Interpreters Institute of Australasia (1959 - )
- Ipswich and West Moreton Teachers Association
- Ipswich Shop Assistants Association
- Iron & Steel Industry Employees protective Association (1917 - )
- Iron Workers Assistants Association of NSW (1890 - )
- Iron, Brass & Steel Dressers Union of NSW (1913 - )
- Ironfounders Trade Union of Victoria (c. 1882 - c. 1899)
- Ironmoulders Trade Union of Queensland (c. 1896 - )
- Ironworkers Assistants Union (1881 - c. 1900)
- Ironworkers Assistants Union of NSW (1900 - )
- Irrigation Commission Professional Officers Association (1920 - )