1) General subject: voluntary organization, NGO, noncommercial association, non-governmental organization, social entity, community-based organisation, civic organisation
2) American: non-profit-making organization (благотворительная, просветительская и т. п.), non-profit-making organization (благотворительная, просветительская и т.п.)
3) Law: social organization
4) Diplomatic term: nonprofit organization (благотворительная, просветительская и т.п.)
5) Psychology: society
6) Sociology: advocacy organisation, citizen advocacy organisation
7) Advertising: social action organization, voluntary body
8) Patents: social organism
9) Business: social agency
10) Makarov: voluntary society
11) Politico-military term: non-governmental organisation
12) Non-profit-making organization: civil society organization (The term is defined as a legal term in many jurisdictions.)
Универсальный русско-английский словарь. Академик.ру. 2011.