American Alliance of Service Providers

AASP is an association of Internet Service Providers and other related companies offering web design and web hosting.
http://aaserviceproviders.org/

EuroISPA

Consists of the largest Internet service providers in the European Union. Seeks to protect user rights through the establishment of an international code of conduct and active government lobbying.
http://www.euroispa.org/

South Australian Internet Association

Seeks to faciliate communication between Internet service providers and consumers.
http://www.saia.asn.au/

Swiss Network Operators Group - SwiNOG

Is an informal group of people who are concerned with engineering and operation of the Swiss Internet.
http://www.swinog.ch/