Browse Trade Unions - H
- Haddon Miners Association (? - 1874)
- Hairdressers, Wigmakers Employees Union (1902 - )
- Harbours & Rivers Union of Employees (1912 - )
- Hartley District Miners Mutual Protection Association
- Hartley Vale Shale & Coal Miners Mutual Protective Lodge of the Western District (1890 - )
- Headmasters Association of South Australia
- Health & Research Employees Association of Australia (1969 - 1991)
- Health Inspectors Association of Australia (1920 - 1972)
- Health Inspectors Association of Australia, NSW Branch (1922 - )
- Health Inspectors Society of NSW (1913 - )
- Health Services Union of Australia (1991 - ), HSU
- Horological Guild of NSW (1944 - )
- Horse Drivers Union of Sydney & Suburbs (1917 - )
- Hospital & Asylum Attendants & Employees Union (1911 - 1914)
- Hospital & Asylum Employees Union of NSW (1911 - )
- Hospital Dispensary & Asylum Employees & Allied Government Officers Federation of Australia (1930 - 1946)
- Hospital Dispensary & Asylum Employees Union of Australia (1914 - 1930)
- Hospital Employees Association of Australia (1922 - 1949)
- Hospital Employees Federation of Australasia (1946 - 1959)
- Hospital Employees Federation of Australia (1959 - 1991)
- Hospital Officers Association of NSW (1933 - )
- Hotel Caterers & Boarding House Female Employees Association (1912 - 1950)
- Hotel Club Caterers Tearoom & Restaurant Employees Union
- Hotel Club Restaurant & Caterers Employees Union of NSW (1911 - 1940)
- Hotel Club Restaurant & Caterers Employees Union of South Australia
- Hotel Club Restaurant Caterers Tea Rooms & Boarding House Employees Union of New South Wales (1940 - 1970)
- Hotel, Club, Restaurant & Caterers Employees union of NSW (1902 - )
- HSU, Health Services Union of Australia (1991 - )
- Hunter & District Water Supply & Sewerage Board Employees Association (1912 - )
- Hunter District Water Board Employees Association (1958 - )
- Hunter District Water Supply & Sewerage Board Salaried Officers Association (1929 - )
- Hunter River District Smelters & Employees Union (1890 - )
- Hunter River Mechanics & Enginemens' Society (1883 - )