- A. Goninan & Co Limited
- Abbey Green Station
- Abbott, Percy Phipps (1869 - 1940)
- ABC Radio Riverina
- see Australian Broadcasting Corporation Radio Riverina
- Aberbaldie Station
- Aberdare Extended Miner's Lodge (1910 - 1927)
- Abington Station (c. 1836 - )
- Aboriginal Research Collection
- ACTU, Australian Council of Trade Unions (1921 - )
- Adams, Alfred Augustus (1814 - 1906)
- Adams, Arthur Leslie
- Adams, Constance C.
- Adelong Historical Society (1970 - )
- AEU, Amalgamated Engineering Union (1938 - 1975)
- AFULE, Australian Federated Union of Locomotive Enginemen (1964 - 1971)
- Agate, William George "Bill" (1890s - 1917)
- Agricultural Aviation Co Ltd
- Agricultural Bureau of New South Wales
- Aiken, John D. (1922 - )
- Albion Park Literary Institute
- Albury Branch, Farmers and Graziers' Co-operative
- Albury-Wodonga Post School Education Committee
- Alcorn, Andrew
- Alston Soap & Candle Manufacturing Co Ltd
- Amalgamated Clothing & Allied Trades' Union (1924 - 1947)
- Amalgamated Engineering Union (1938 - 1975), AEU
- Amalgamated Journeymen Tailors Association of New South Wales (c. 1875 - c. 1907)
- Amalgamated Metal Workers and Shipwrights Union (1928 - 1988)
- Amalgamated Metal Workers Union (1973 - 1976)
- Anastasi, Vic
- Anderson, Colin
- Andrews, Frank
- Anglican Diocese of Newcastle - Cemeteries (c. 1791 - )
- Anglican Diocese of Newcastle - Parishes (c. 1826 - )
- Anglican Diocese of Newcastle - Registrar (c. 1834 - )
- Anglican Diocese of Newcastle - Synod (c. 1865 - )
- Anglican Diocese of Newcastle (1847 - )
- Anglican Diocese of Riverina (1881 - )
- Anglican Diocese of Riverina, Ardlethan - Ariah Park Parish
- Anglican Diocese of Riverina, Balranald Parish
- Anglican Diocese of Riverina, Barellen and Weethalle Parishes
- Anglican Diocese of Riverina, Barham Parish
- Anglican Diocese of Riverina, Berrigan Parish
- Anglican Diocese of Riverina, Broken Hill Parish
- Anglican Diocese of Riverina, Coolamon Mothers' Union, St. Andrew's Parish
- Anglican Diocese of Riverina, Coolamon Parish
- Anglican Diocese of Riverina, Corowa Parish
- Anglican Diocese of Riverina, Culcairn - Henty Parish
- Anglican Diocese of Riverina, Darlington Point Parish
- Anglican Diocese of Riverina, Deniliquin Parish
- Anglican Diocese of Riverina, Ganmain Parish
- Anglican Diocese of Riverina, Griffith Parish
- Anglican Diocese of Riverina, Grong Grong Parish
- Anglican Diocese of Riverina, Hay Parish
- Anglican Diocese of Riverina, Hillston Parish
- Anglican Diocese of Riverina, Ivanhoe and Mossgiel Parishes
- Anglican Diocese of Riverina, Lake Cargellico Parish
- Anglican Diocese of Riverina, Leeton Parish
- Anglican Diocese of Riverina, Lockhart Parish
- Anglican Diocese of Riverina, Marrar Parish
- Anglican Diocese of Riverina, Mathoura Parish
- Anglican Diocese of Riverina, Menindee Parish
- Anglican Diocese of Riverina, Moama Parish
- Anglican Diocese of Riverina, Morundah Parish
- Anglican Diocese of Riverina, Moulamein Parish
- Anglican Diocese of Riverina, Narrandera Parish
- Anglican Diocese of Riverina, The Rock Parish
- Anglican Diocese of Riverina, Tocumwal - Finley Parish
- Anglican Diocese of Riverina, Tullibigeal Parish
- Anglican Diocese of Riverina, Urana Parish
- Anglican Diocese of Riverina, Walla Walla Parish
- Anglican Diocese of Riverina, Walliston Parish
- Anglican Diocese of Riverina, Wentworth Parish
- Anglican Diocese of Riverina, White Cliffs Parish
- Anglican Diocese of Riverina, Whitton Parish
- Anglican Diocese of Riverina, Wilcannia Parish
- Apex Club (1932 - ), Wagga Wagga
- Apex Club (1961 - ), South Wagga
- Ardlethan - Ariah Park Parish, Anglican Diocese of Riverina
- Argyle Station
- Armidale
- Armidale and District Historical Society (1959 - )
- Armidale and District Matron's Ball Committee (1954 - 1989)
- Armidale and New England Hospital
- Armidale and New England Jockey Club (1842 - )
- Armidale and New England Region (c. 1830 - )
- Armidale Association for the Assimilation Aborigines (1956 - 1974)
- Armidale Bowling Club (1914 - )
- Armidale Branch, Arts Council of Australia
- Armidale Branch, Inspect
- Armidale Branch, National Parks Association of New South Wales Inc (1974 - 1989)
- Armidale Branch, Red Cross
- Armidale Cement Industries
- Armidale Central Park (1874 - )
- Armidale Chess Club
- Armidale Chronicle [Newspaper]
- Armidale Circle Branch, Royal Sydney Philatelic Club
- Armidale City Band (1894 - )
- Armidale City Council (1881 - 2000)
- Armidale College of Advanced Education (1971 - 1989)
- Armidale Community Radio 2ARM FM
- Armidale Community Service Centre
- Armidale Community Service Group
- Armidale Community Welfare Discussion Group
- Armidale Development Corporation
- Armidale District Poultry Club (1923 - )
- Armidale Dumaresq Council (2001 - )
- Armidale Express [Newspaper] (1856 - )
- Armidale Freedom from Hunger Campaign
- Armidale Gas Company (1885 - )
- Armidale Golf Club (c. 1899 - )
- Armidale Ladies' Relief Society
- Armidale Literary Institute (1859 - 1955)
- Armidale Methodist Church (1859 - 1977)
- Armidale Municipal Council (c. 1863 - c. 1881)
- Armidale Music and Operatic Society (1910 - )
- Armidale Mutual Help Benefit Building Society (1895 - )
- Armidale Pastoral Agricultural and Horticultural Association (1865 - )
- Armidale Rifle Club
- Armidale Senior Citizens Association
- Armidale Show Society
- Armidale Spinners and Weavers Group (1972 - )
- Armidale Teachers College (1928 - 1971)
- Armidale Telegraph [Newspaper] (1865 - 1872)
- Armidale, Church of England
- Armidale, Manchester Unity Independent Order of Oddfellows Loyal Lodge
- Armidale, Movement Against Uranium Mining
- Armidale, New England New State Movement
- Armidale, Presbyterian Church of Eastern Australia
- Armidale, Roman Catholic Church, Armidale
- Armidale, Zonta Club
- Armstrong and Royce Ltd
- Arts Council (Armidale)
- Arts Council of Australia, Armidale Branch
- Arts Council of New South Wales (1970 - ), Wagga Wagga Branch
- ASPESA
- see Australian and South Pacific External Studies Association
- Associated Growers Co-operative Ltd
- Association for the Assimilation of Aborigines
- Association of Relatives and Friends of the Mentally Ill, Wagga Wagga Branch
- Atkinson, Mrs A.E.
- see Freeman, Hilda (1885 - 1937)
- Australasian Federated Butchers Employees Union (1906 - 1912)
- Australasian Institute of Metals (1977 - )
- Australasian Meat Industry Employees Union (1906 - 1972), NSW Branch
- Australian Agricultural Company [UNE Archives] (1824 - )
- Australian Agricultural Company [Uni of Newcastle Archives] (1824 - )
- Australian Air League (c. 1934 - )
- Australian and South Pacific External Studies Association
- Australian Broadcasting Corporation Radio Riverina
- Australian Broadcasting Tribunal
- Australian Coal and Shale Employees Federation (1916 - 1990), Miners Federation
- Australian Conservation Foundation, Canberra Branch - Jervis Bay Working Group (1986 - 1990)
- Australian Council of Trade Unions (1921 - ), ACTU
- Australian Country Music Heritage Hall
- Australian Country Party, Wagga Wagga Branch
- Australian Federated Union of Locomotive Enginemen (1964 - 1971), AFULE
- Australian Federation of University Women, Riverina Branch, Wagga Wagga
- Australian Federation of University Women (1962 - 1996)
- Australian Institute of Metals (1941 - 1977)
- Australian Iron and Steel Pty Ltd (1913 - 1982)
- Australian Jewish History Society
- The Australian Joint Stock Bank Limited (1852 - 1910)
- Australian Labor Party, Heathcote State Electorate Council
- Australian Labor Party, Thirroul Branch
- Australian Labor Party, Wagga Wagga Branch
- Australian Labor Party, Windang Branch
- Australian Labor Party (1930 - 1992), Como Jannali Branch
- Australian Labor Party (1932 - 1974), Bulli-Woonona Branch
- Australian Labor Party (1937 - 1950), Illawarra State Electoral Council
- Australian Labor Party (1950 - 1970), Bulli State Electorate Council
- Australian Labor Party (1951 - 1974), Mount Kembla Branch
- Australian Labor Party (1953 - 1963), Caringbah Branch
- Australian Labor Party (1958 - 1965), Sutherland State Electorate Council
- Australian Labor Party (1958 - 1975), Reidtown Branch
- Australian Labor Party (1961 - 1973), Corrimal Branch
- Australian Labor Party (1962 - 1966), Sutherland Municipal Committee
- Australian Labor Party (1963 - 1974), Camden Branch
- Australian Labor Party (1963 - 1979), Hughes Federal Electorate Council
- Australian Mining Industry Council
- Australian National Choral Championship
- Australian Peace Council (1941 - 1958)
- Australian Red Cross Society (1914 - ), Wagga Wagga Branch
- Australian Road Safety Council
- Australian Society of Breeders of British Sheep, Riverina District Committee of the New South Wales Branch
- Australian Society of Soil Science Inc (1955 - ), Riverina Branch
- Australian Vietnam Society (1979 - 1992)
- Autumn Lodge Armidale
- Aytondale Station
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