Below is a list of other international organizations that are focused on copyright and intellectual property.
Supranational organizations and copyright:
World Intellectual Property Organisation (WIPO)
UNESCO Culture Sector, Copyright Division
WTO TRIPS Gateway
International copyright treaties:
WIPO Berne Convention
WIPO Copyright Treaty
UNESCO Universal Copyright Convention
WTO Agreement on Trade Related Aspects of Intellectual Property Rights (TRIPS)
Copyright Laws:
WIPO Collection of IP Laws
UNESCO Collection of national copyright laws (no deep-linking possible; follow links)
National and regional copyright offices:
European Commission:
Directorate General Internal Market, Copyright and Related Rights section
Directorate General Information Society and Media
Directorate General External Trade, Intellectual Property section
Canada:
Canadian Intellectual Property Office
WIPO Directory of IP Offices (per country)
Non-governmental Organisations and academic copyright think tanks:
Association Internationale pour la Protection de la Propriété Intellectuelle (AIPPI), Zurich
Association littéraire et artistique internationale (ALAI)
Max Planck Institute for Intellectual Property, Competition and Tax Law (MPI IP), Munich
Institut für Urheber- und Medienrecht, Munich
Institute for Information Law, Amsterdam
Copyright Society of the USA (CSUSA) New York
Centre de recherche informatique et droit (CRID), Namur
Stanford Law School, Center for Internet and Society (CIS)
Internet Governance Forum (IGF)
International rightsholder representatives:
International Association of Scientific, Technical and Medical Publishers (STM)
International Confederation of Music Publishers (ICMP)
International Federation of Scholarly Publishers (IFSP)
International Intellectual Property Alliance (IIPA)
International Federation of Reproduction Rights Organisations (IFRRO)
International Federation of the Phonographic Industry (IFPI)
International Federation of Film Producers Associations (FIAPF)
World Association of Newspapers (WAN)
Other international stakeholder associations:
International Federation of Library Associations and Institutions (IFLA)
World Blind Union (WBU)
Creative Commons
Open Content Alliance (OCA)