| # | Association | Country | Discipline | Members |
|---|
| | | |
| 26 | American Federation for Aging Research | United States | Aging | 0 |
| 27 | American Folklore Society | United States | Folklore, Anthropology | 0 |
| 28 | American Geophysical Union | United States | Geophysics | 0 |
| 29 | American Heart Association | United States | Medicine, Heart | 0 |
| 30 | American Institute of Biological Sciences | United States | Biology | 0 |
| 31 | American Institute of Physics | United States | Physics | 0 |
| 32 | American Management Association, AMA | United States | Management | 0 |
| 33 | American Medical Association | United States | Medicine | 0 |
| 34 | American Musicological Society | United States | Music | 0 |
| 35 | American Numismatic Society | United States | Coins, Antiques | 0 |
| 36 | American Oriental Society | United States | Asian Studies | 0 |
| 37 | American Philological Association | United States | Philology, Greek and Roman Culture | 0 |
| 38 | American Philosophical Society | United States | Philosophy | 0 |
| 39 | American Physical Society | United States | Physics | 0 |
| 40 | American Political Science Association (APSA) | United States | Political Science | 1 |
| 41 | American Psychological Association | United States | Psychology | 0 |
| 42 | American Society for Aesthetics | United States | Aesthetics, Philosophy, Art | 0 |
| 43 | American Society for Eighteenth-Century Studies | United States | History | 0 |
| 44 | American Society for Environmental History | United States | Environment, Hisory, Geography, Earth Science | 0 |
| 45 | American Society for Legal History | United States | Law, Hisory, American Studies | 0 |
| 46 | American Society For Microbiology | United States | Biology | 0 |
| 47 | American Society for Quality | United States | Buisness, Organizations | 0 |
| 48 | American Society for Theatre Research | United States | Theater | 0 |
| 49 | American Society of Church History | United States | Religious Studies, Religion, History | 0 |
| 50 | American Society of Civil Engineers | United States | Engineering | 0 |