The International Badminton Federation

Includes news, world rankings, calendar, results and draws, rules, laws, badminton development, approved equipment, olympic involvement, and related links.
http://www.intbadfed.org/

European Badminton Union

Founded in 1967, with 47 member countries.
http://www.eurobadminton.org/

International Badminton Association for the Disabled

Site for promoting and developing badminton for people with disabilities. Contains contacts for anyone wanting to get involved as well as tournament fixtures and results for those following disabled badminton.
http://www.ibad.nl

Veterans Badminton

Comprehensive tournament listing for both UK and international veteran events. Regular news, newsletters and ranking lists.
http://www.emptage-architects.co.uk/badminton/

Asian Badminton Confederation

Provides details about upcoming events, news items, results, and rankings. [Links may not work correctly in all browsers]
http://www.asianbadminton.org.my/