| name | date founded | city Headquarters | administrative division Headquarters | country Headquarters | continent Headquarters | number of members | Website | date dissolved |
|---|---|---|---|---|---|---|---|---|
| Planned Parenthood | 1916 | New York City | New York | United States | Americas | 85 | Website | 1942 |
| Ásatrúarfélagið | 1972 | Reykjavík | Capital Region | Iceland | Europe | 2,488 | Website | |
| 100 Black Men of America | 1963 | Atlanta | Georgia | United States | Americas | 10,000 | Website | |
| AARP | 1958 | Washington, D.C. | District of Columbia | United States | Americas | 37,000,000 | Website | |
| Academia Brasileira de Letras | 20/06/1897 | Rio de Janeiro | Rio de Janeiro | Brazil | Americas | 40 | Website | |
| Academy of General Dentistry | 1952 | Chicago | Illinois | United States | Americas | 35,000 | Website | |
| Academy of Sciences and Arts of Bosnia and Herzegovina | 1951 | Sarajevo | Federation of Bosnia and Herzegovina | Bosnia and Herzegovina | Europe | 44 | Website | |
| Adrian Dominican Sisters | After 1923 | Adrian, Michigan | Michigan | United States | Americas | 816 | Website | |
| AfriForum | 2006 | Kloofsig | Gauteng | South Africa | Africa | 66,000 | Website | |
| AFSGD | 1999 | Istanbul | Istanbul | Turkey | Asia | 300 | Website |