| Regional Groups | Regional Chairs | |
| North America | | |
| Canada | Sara Ashpole & Kristiina Ovaska | |
| USA | Dede Olson | |
| Caribbean | | |
| Mesoamerica | | |
| Mexico | Gabriela Parra-Olea | |
| Guatemala and Belize | Carlos Vásquez Almazán | |
| El Salvador | Francisco Samuel Álvarez Calderón | |
| Honduras | Ruth Marcec-Greaves | |
| Nicaragua | Silvia Robleto & Allan Gutierrez | |
| Costa Rica | Gerardo Chaves Cordero | |
| Panama | Roberto Ibáñez | |
| South America | | |
| Colombia | Sandra O. Galeano & Mauricio Rivera Correa | |
| Venezuela | Margarita Lampo & Celsa Señaris | |
| Guiana Shield | Philippe Kok | |
| Brazil | Cybele Lisboa | |
| Ecuador | Diego Cisneros-Heredia | |
| Peru | Victor Vargas & Giussepe Gagliardi | |
| Bolivia | Arturo Munoz & Claudia Cortez | |
| Chile | Juan Carlos Ortiz & Claudio Soto-Azat | |
| Paraguay | | |
| Uruguay | | |
| Argentina | Marcos Vaira | |
| Europe, West, and Central Asia | | |
| Europe | Vincenzo Ferri | |
| Commonwealth of Independent States (CIS) and Mongolia | Artem Kidov | |
| West Asia | Pritpal Soorae & Ugur Kaya | |
| Africa | | |
| North Africa | | |
| West Africa | N’goran Kouamé | |
| Central Africa | Legrand Nono Gonwouo | |
| East Africa | Victor Wasonga & Simon Loader | |
| Southern Africa | Jeanne Tarrant | |
| Madagascar | Andolalao Rakotoarison & Angelica Crottini | |
| Seychelles | | |
| South, East and Southeast Asia | | |
| China | Jianping Jiang | |
| South Asia (minus Sri Lanka) | Karthikeyan Vasudevan | |
| Sri Lanka | Anslem de Silva & Madhava Meegaskumbura | |
| Mainland SE Asia | | |
| Malaysia | Kin Onn Chan | |
| Singapore | Leong Tzi Ming | |
| Indonesia | Amir Hamidy | |
| Philippines | Arvin Diesmos | |
| Japan | | |
| Republic of Korea | | |
| Oceania | | |
| Melanesia | Stephen Richards | |
| Australia | Jodi Rowley and Conrad Hoskin | |
| New Zealand | | |