Type of membership:

Action Renewables |
| Full Member |
Belfast Healthy Cities |
| Full Member |
Belfast Hills Partnership |
| Full Member |
British Council NI |
| Full Member |
Bryson Charitable Group |
| Full Member |
Campaign for the Protection of the Countryside NI |
| Full Member |
Causeway Coast and Glens Heritage Trust |
| Full Member |
Cavehill Conservation Campaign |
| Full Member |
Chartered Institute of Environmental Health NI |
| Full Member |
Colin Glen Trust |
| Full Member |
Community Development and Health Network |
| Full Member |
Community Places |
| Full Member |
Conservation Volunteers NI |
| Full Member |
Council for British Archaeology |
| Full Member |
County Armagh Wildlife Society |
| Full Member |
Farming and Wildlife Advisory Group NI |
| Full Member |
Federation of City Farms and Community Gardens |
| Full Member |
Field Studies Council |
| Full Member |
Forest of Belfast |
| Full Member |
Grass Roots Conservation Group |
| Full Member |
Green Action Belfast |
| Full Member |
Greencastle Area Residents Group |
| Full Member |
Hedge Laying Association of Ireland |
| Full Member |
Holywell Trust |
| Full Member |
Institute of Public Health in Ireland |
| Full Member |
International Tree Foundation NI |
| Full Member |
Irish Hare Initative |
| Full Member |
Lough Neagh and Lower Bann Advisory Committees |
| Full Member |
Lough Neagh Partnership |
| Full Member |
Monkstown Community Forum |
| Full Member |
Mountaineering Ireland |
| Full Member |
Mourne Heritage Trust |
| Full Member |
National Trust |
| Full Member |
NI Badger Group |
| Full Member |
NI Cycling Initiative |
| Full Member |
NI Energy Agency |
| Full Member |
North Belfast Partnership |
| Full Member |
Organic Centre |
| Full Member |
Rural College and Derrynoid Centre |
| Full Member |
Rural Community Network |
| Full Member |
Rural Development Council |
| Full Member |
Speedwell Trust |
| Full Member |
Supporting Communities NI |
| Full Member |
Sustainable NI |
| Full Member |
Talnotry Avian Care Trust |
| Full Member |
Ulster Angling Federation |
| Full Member |
Ulster Archaeological Society |
| Full Member |
Ulster Architectural Heritage Society |
| Full Member |
Ulster Coarse Fishing Federation |
| Full Member |
Ulster Society for the Protection of the Countryside |
| Full Member |
Ulster Wildlife Trust |
| Full Member |
Waste and Resources Action Programme |
| Full Member |
Wildfowl and Wetlands Trust |
| Full Member |
Woodland Trust |
| Full Member |