Countries assigned for the AMUN 2021 virtual conference
All countries listed are automatically seated on the Concurrent General Assembly Plenary. Each delegation is expected to assign one representative to each Committee, Council and Commission on which it is seated.
The following codes designate on which committees each Member State is seated.
| Country | School | 1 = General Assembly Plenary (Concurrent)
| Argentina 1 2 | Alverno College |
| Chile 1 | Alverno College |
| Colombia 1 2 | Alverno College |
| Costa Rica 1 | National Chengchi University |
| Cuba 1 2 | Truman State University |
| Democratic People's Republic of Korea 1 | Truman State University |
| Denmark 1 2 | Missouri Southern State University |
| Estonia 1 | Dominican University |
| India 1 2 | Westminster College |
| Iraq 1 | University of Wisconsin - La Crosse |
| Ireland 1 | University of Central Oklahoma |
| Japan 1 2 | Wichita State University |
| Kenya 1 | Millikin University |
| Mexico 1 2 | Alverno College |
| Nigeria 1 | Anderson University |
| Poland 1 | Central Michigan University |
| Senegal 1 | Coe College |
| Sudan 1 | University of Arizona |
| Switzerland 1 | University of Arizona |
| Thailand 1 | Missouri Southern State University |
| Turkey 1 2 | National Chengchi University |
| United Arab Emirates 1 | University of Arizona |
| United States of America 1 2 | National Chengchi University |
| Viet Nam 1 | Westminster College |