Browse Trade Unions - L
- La Trobe University Staff Association (1966 - 1988)
- Lachlan Carriers Union (1890 - )
- Lamplighters Union of NSW (1903 - )
- Lathers Union of Victoria ( - c. 1916)
- Laundry Employees Union (1903 - ?)
- Laundry Employees Union of NSW (1903 - )
- Law Clerks Association of Australia (1920 - 1949)
- Letterpress Printers Machinists Industrial Union
- Letterpress, Printers, Machinists Industrial Union Employees of NSW (1902 - )
- LHMU, Australian Liquor Hospitality & Miscellaneous Workers Union (i) (1992 - 1993)
- LHMU, Australian Liquor Hospitality & Miscellaneous Workers Union (ii) (1993 - 1994)
- Licensed Billposters Employees Association of NSW (1908 - )
- Licensed Fishermans Association of Australia, NSW Branch (1938 - )
- Licensed Vanmens Union (1890 - )
- Life Assurance Agents Association, NSW Branch, The Industrial (1952 - )
- Life Assurance Agents Union of NSW (1904 - )
- Line Inspectors Association, Commonwealth of Australia (1918 - 1980)
- Liquor Trade Employees Union of South Australia (1920 - 1924)
- Liquor Trades Union, Brewers Maltsters & Aerated Waters & Cordial Makers Association (1903 - c. 1908)
- Liquor Trades Union, Brewery Maltsters Employees Association (1900 - 1903)
- Liquor Trades Union, Federated Brewery Employees Association of the Commonwealth of Australia (1908 - 1910)
- Lithgow Blast Furnace Workers Union (1912 - )
- Lithgow District Smelters & Workers Industrial Union of Employees (1902 - )
- Lithgow Pottery & Brickworkers Industrial Union of Employees (1902 - )
- Livestock Buyers, Wholesale Meat & Skin Salesmen Association (1953 - )
- Local Government Engineers Association of New South Wales
- Local Government Overseers Association of NSW (1918 - )
- Locomotive Engine Drivers & Firemens Association (1872 - 1900)
- Locomotive Engine Drivers Association (1861 - 1872)
- Long Distance Transport Association of Australia (1953 - )