National Advisory Committee for Aeronautics | National Advisory Committee on Aeronautics |
National Association for the Advancement of Colored People | National Association for the Advancement of Colored People |
National Basketball Association | National Basketball Association |
National Broadcasting Company | NBC |
National Center for Biotechnology Information | National Center for Biotechnology Information |
National Center for Supercomputing Applications | National Center for Supercomputing Applications |
National Collegiate Athletic Association | NCAA |
National Football Conference | National Football Conference |
National Football League | National Football League |
National Gallery de Londres | National Gallery |
National Gallery of Scotland | National Gallery of Scotland |
National Geographic Society | National Geographic Society |
National Language Services | Nationale taaldienst |
National Mall | National Mall |