In 2003, there were about 732 regional, national, and international organizations within the state. Notable national organizations with headquarters in Nevada include the Western History Association, the American Chess Association, the American Gem Society, the Gaming Standards Association, and the North American Boxing Federation.

Local arts and history are represented in part by the Central Nevada Historical Society, the Lake Tahoe Arts Council, the National Association for Outlaw and Lawman History, and the Nevada Opera Association.

The Confederate National Congress, founded in 1865, is based in North Las Vegas. The group, which has reported a membership of 2 million, supports a movement for Southern independence and the reestablishment of the Confederate States of America.