In Europe

France
French Hydrogen Association

Germany
The German Hydrogen and Fuel Cell Association

Iceland
North Atlantic Hydrogen Association

Italy
Italian Hydrogen and Fuel Cell Association

Netherlands
Dutch Hydrogen Association

Norway
Norwegian Hydrogen Association

Poland
The Polish Hydrogen and Fuel Cell Association

Spain
Spanish Hydrogen Association – Hydrogen and Fuel Cells Technologies

Sweden
Hydrogen Sweden

Switzerland
Swiss Hydrogen Association

United Kingdom
UK Hydrogen and Fuel Cells Association

In the rest of the World:

Australia
Australian Association for Hydrogen Energy

Canada
Canadian Hydrogen and Fuel Cell Association

Japan
Hydrogen Energy Systems Society of Japan

Korea
The Korean Hydrogen and New Energy Society

United States of America
Fuel Cell and Hydrogen Energy Association

International Associations:

International Association for Hydrogen Safety
http://www.hysafe.info/

European Hydrogen Association
http://www.h2euro.org/

Marine Hydrogen and Fuel Cell Association
http://fuelcellmarkets.com/images/MHFCA_Brochure.pdf

International Association for Hydrogen Energy
http://www.iahe.org/default.asp