NSL

NSL may refer to:

Government and politics

 * National Security League, an American preparedness organization
 * National Socialist League, a British pre–World War II Nazi group
 * National Socialist League (United States), a gay neo-Nazi party in the U.S., 1974–1980s
 * National Socialist Legion, an American neo-nazi group
 * National security letter, an administrative subpoena issued by the U.S. government
 * National Security Act (South Korea)
 * Hong Kong national security law

Sports

 * Naša Sinalko Liga, a Serbian basketball league known as the Sinalco League
 * National Soccer League (disambiguation)
 * National Softball League, a British amateur co-ed slow pitch softball league
 * Netball Superleague, a British netball league
 * Northern Super League, a Canadian women's soccer league
 * Nottinghamshire Senior League, an English association football league

Transportation

 * NSL Buses, London, England
 * North South MRT line of the Singapore Mass Rapid Transit system

Languages

 * Nepali Sign Language
 * Norwegian Sign Language
 * Nicaraguan Sign Language

Other

 * NSL Services Group, a business group in London, England
 * Nanosphere lithography, a method to produce nanoscopic structures
 * Nintendo Switch Lite
 * Nuziveedu Seeds Limited