| AC | Advisory Committee |
| CEE | Central and Eastern Europe |
| CSOP | Czech Union of Nature Conservation |
| CUI | Canadian Urban Institute |
| DHI | District Hygiene Inspectorate |
| EAP | Environmental Action Program |
| EIA | Environmental Impact Assessment |
| ESA | Environmentally Sensitive Areas |
| ETP | Environmental Training Project |
| ETP-S | Environmental Training Project-Slovakia |
| EU | European Union |
| HERO | Hungarian Eco-Region Office |
| HIID | Harvard Institute for International Development |
| IEC | Independent Ecological Center |
| IEP | Institute for Environmental Policy |
| ISC | Institute for Sustainable Communities |
| ISD | Institute for Sustainable Development |
| LEAP | Local Environmental Action Plan |
| MoE | Ministry of the Environment |
| NEAP | National Environmental Action Program |
| NGO | Nongovernmental Organization |
| OECD | Organization for Economic Cooperation and Development |
| PC | Program Committee, Policy Committee |
| PCO | Project Coordination Office |
| QHRA | Quality Health Risk Assessment |
| REAP | Regional Environmental Action Plan |
| REC | Regional Environmental Center for Central and Eastern Europe |
| REI | Regional Environmental Instpection |
| ROWG | Regional Objective Workshop |
| RSD | Rackeve-Soroksari Danube |
| SC | Strategy Committee, Steering Committee |
| TC | Technical Committee |
| TF | Task Force |
| UN | United Nations |
| UNESCO | United Nations Educational, Scientific and Cultural Organization |
| USAID | United States Agency for International Development |
| USEPA | United States Environmental Protection Agency |
| VATI | City Planning Institute |
| WRI | World Resources Institute |