NLA
- Boeing New Large Airplane
- National Language Authority
- National League A
- National Leather Association International
- National Liberation Army (disambiguation)
- National Library of Afghanistan
- National Library of Agriculture
- National Library of Albania
- National Library of Aleppo
- National Library of Algeria
- National Library of Andorra
- National Library of Angola
- National Library of Antigua and Barbuda
- National Library of Argentina
- National Library of Armenia
- National Library of Aruba
- National Library of Australia
- National Library of Austria
- National Library of Azerbaijan
- National Lipid Association
- Nebraska Library Association
- Network Level Authentication
- Nevada Library Association
- New London Architecture
- Newspaper Licensing Agency
- Numerical linear algebra
- Simon Mwansa Kapwepwe International Airport