NLA

NLA may refer to:
 * NLA, the IATA code for Simon Mwansa Kapwepwe International Airport in Ndola, Zambia
 * National Language Authority, a regulatory institution of Urdu language in Pakistan
 * National League A, the premier ice hockey league in Switzerland
 * National Leather Association International, a BDSM organization based in the United States
 * National Liberation Army (disambiguation)
 * National Lipid Association, an American association of healthcare providers dedicated to improve lipid management in clinical medicine
 * Network Level Authentication, in computing, a user authorizing technology
 * New Large Airplane, a defunct airplane project
 * New London Architecture, a resource and forum for London's built environment
 * Newspaper Licensing Agency, a newspaper licensing organization in the United Kingdom
 * Numerical linear algebra, the study of algorithms for performing linear algebra computations

Libraries

 * Nebraska Library Association
 * Nevada Library Association

National libraries

 * National Library of Afghanistan, based in Kabul University prior to its destruction in a civil war.
 * National Library of Agriculture, more accurately known as the United States National Agricultural Library
 * National Library of Albania
 * National Library of Aleppo
 * National Library of Algeria
 * National Library of Andorra, more accurately known as the Andorra National Library
 * National Library of Angola
 * National Library of Argentina, more accurately known as the Mariano Moreno National Library of the Argentine Republic
 * National Library of Armenia
 * National Library of Aruba
 * National Library of Australia
 * National Library of Austria, more accurately known as the Austrian National Library
 * National Library of Azerbaijan