NEST has collaborated with, and been supported by, a wide range of organizations over the years these include:

• African Network of Environmental NGOs (ANEN)
• African Adaptation Projects (AAP)
• Canadian International Development Agency
• Canadian University services Overseas (CUSO)
• CIDA now Department of Foreign Affairs, Trade and Development (DFATD)
• Climate Network Africa
• Commonwealth Secretariat, London
• Environment Liaison Centre (ELCI)
• Federal Ministry of Environment
• Ford Foundation
• Forestry Management Evaluation And Coordinating Unit (FORMECU)
• Friedrich Ebert Foundation
• Friends of the Earth, Netherlands
• German Embassy Abuja
• Global Environment Facility (GEF)
• Goethe Institute
• Hadejia-Nguru Wetlands Conservation Project
• Heinrich Boell Foundation
• International Development Research Centre (IDRC)
• Nigeria Field Society
• Nigerian Conservation Foundation
• Enabling Environment Forum
• Third World Network
• United Nations Development Program (UNDP)
• United Nations International Children Emergency Fund (UNICEF)
• World Resources Institute (WRI)