Like any industry, there are various trade bodies, interest groups, lobbyists and every sort and combination thereof. There will be lots I have forgotten, many with good reason. If they spring to mind, I'll update the list.
A purely narcissistic categorisation of them is, broadly: ones I've joined, ones I haven't joined, ones you can't join and ones that wouldn't let me join.
The Fragrance Foundation
British Society of Perfumers
IFRA UK
The Perfume Society
International Cosmetic Ingredient Nomenclature Committee (INC)
The United Nations Economic Commission for Europe (UNECE)
The Institute of Art & Olfaction
Regulation (EC) No 1223/2009 of the European Parliament and of the Council of 30 November 2009 on cosmetic products (recast)