The Largest National Boat Racing Organization is the APBA.
The largest student organization of the world is the Indian nationalist student organization called ABVP or Akhil Bharatiya Vidyarthi Parishad with 17,80,802 registered, dues-paying student members. (Nov 2010)
aarp and national rifle organization
NRA. National Rifle Association
national safety council
National Geographic Society
The National Arbor Day Foundation
Altaf Hussain is the leader and founder of the third largest political party in the national assembly of Pakistan, the Muttahida Quami Movement (MQM). Hussain also founded the All Pakistan Mohjair Student Organization.
The Smithsonian, Washington, DC is the world's largest museum complex and research organization composed of 16 museums and the National Zoo.
The National Student Clearinghouse is a non-profit organization based in the United States with approximately 750 employees. It serves over 3,600 higher education institutions and maintains an extensive database of student enrollment and degree information.
FIFA (Fédération Internationale de Football Association) is the largest sports organization in the world, overseeing international soccer competitions and representing 211 national associations.
The Chinese Army The Indian Railway The British National Health Service