In law

• Law and Society Association
  Law and Society Association
  The Law and Society Association is an association founded in 1964. Its members come from many fields and countries and are interested in "the place of law in social, political, economic and cultural life". The association publishes the academic journal Law & Society Review.The LSA's executive...
  
  
• Law Society of Alberta
  Law Society of Alberta
  The Law Society of Alberta is the self-regulating body for lawyers in Alberta, Canada.-Purpose:The Law Society is created and governed by the . As a law society, the Law Society is much more than a professional association and every lawyer who practices in Alberta must belong to it...
  
  
• Legal Services Agency
• List of CFR Sections Affected, a list of new revisions to the US Code of Federal Regulations
  Code of Federal Regulations
  The Code of Federal Regulations is the codification of the general and permanent rules and regulations published in the Federal Register by the executive departments and agencies of the Federal Government of the United States.The CFR is published by the Office of the Federal Register, an agency...
  
  .

Science and technology

• Late Stone Age
  Late Stone Age
  The Later Stone Age refers to a period in African prehistory. Its beginnings are roughly contemporaneous with the European Upper Paleolithic...
  
  
• Lichen sclerosus et atrophicus, a skin disease
• Light-sport aircraft
  Light-sport Aircraft
  A Light-sport aircraft, also known as light sport aircraft or LSA, is a small aircraft that is simple to fly and which meets certain regulations set by a National aviation authority restricting weight and performance...
  
  
• Liquid Solar Array
• Lobe Separation Angle, see cam
  Cam
  A cam is a rotating or sliding piece in a mechanical linkage used especially in transforming rotary motion into linear motion or vice-versa. It is often a part of a rotating wheel or shaft that strikes a lever at one or more points on its circular path...
  
  
• Lsa, the abbreviation for the orchid genus Luisia
  Luisia
  Luisia, abbreviated as Lsa in horticultural trade, is a genus of epiphytical orchids in family Orchidaceae. It contains 40 species found in tropical Asia, Indian subcontinent, China, Malaysia, Philippines, Australia, Polynesia through Japan....
  
  
• Lysergic acid amide (ergine), a compound closely related to LSD

In computing

• Latent semantic analysis
  Latent semantic analysis
  Latent semantic analysis is a technique in natural language processing, in particular in vectorial semantics, of analyzing relationships between a set of documents and the terms they contain by producing a set of concepts related to the documents and terms. LSA assumes that words that are close...
  
  , a technique in natural language processing
• Link-state advertisement
  Link-state advertisement
  The link-state advertisement is a basic communication means of the OSPF routing protocol for the Internet Protocol . It communicates the router's local routing topology to all other local routers in the same OSPF area. OSPF is designed for scalability, so some LSAs are not flooded out on all...
  
  , communication mechanism of the OSPF routing protocol for IP
• Local Security Authority
  Local Security Authority Subsystem Service
  Local Security Authority Subsystem Service , is a process in Microsoft Windows operating systems that is responsible for enforcing the security policy on the system. It verifies users logging on to a Windows computer or server, handles password changes, and creates access tokens...
  
  , the centre of the Windows NT security subsystem (lsass.exe).

Military

• Light Small Arms
  Small arms
  Small arms is a term of art used by armed forces to denote infantry weapons an individual soldier may carry. The description is usually limited to revolvers, pistols, submachine guns, carbines, assault rifles, battle rifles, multiple barrel firearms, sniper rifles, squad automatic weapons, light...
  
  
• Light spotter aircraft, a class of military aircraft
• Logistics Support Analysis, a military support planning methodology.
• Logistics Support Area
  Logistics Support Area
  In the United States Army, a Logistics Support Area is a military term which refers to military facilities which act as depot, barracks, and transportation hubs, providing supplies and personnel to facilities closer to or within arenas of armed conflict...
  
  , a large military depot.
• London Small Arms Co. Ltd
  London Small Arms Co. Ltd
  The London Small Arms Company Ltd was a British Arms Manufacturer from the years 1866-1935.Based in Tower Hamlets, London, London Small Arms Co...
  
  , an English gun-making firm between 1866-1935.
• Lubricant Small Arms, commonly known as LSA.

Organizations

• Learn and Serve America
  Learn and Serve America
  Learn and Serve America is a United States government program under the authority of the Corporation For National and Community Service. Its mission is to provide opportunities for students nation-wide to participate in service learning projects, and to gain valuable experience while helping...
  
  , a US government community service program
• Licentiate of the Society of Apothecaries
• Linguistic Society of America
  Linguistic Society of America
  The Linguistic Society of America is a professional society for linguists. It was founded in 1924 to advance linguistics, the scientific study of human language. The LSA has over 5,000 individual members and welcomes linguists of all kinds. It works to advance the discipline and to communicate...
  
  
• Local Spiritual Assembly, an administrative body of the Bahá'í Faith.
• Lone Scouts of America
  Lone Scouts of America
  Lone Scouts of America was a Scouting organization for American boys that operated from 1915 until it merged with the Boy Scouts of America in 1924. The LSA was founded by W. D. Boyce, a Chicago newspaper entrepreneur and one of the founders of the BSA...
  
  , an independent Scouting organization that merged into the Boy Scouts of America
• Lone Star Alliance
  Lone Star Alliance
  The Lone Star Alliance is a lacrosse-only athletic conference affiliated with the Men's Collegiate Lacrosse Association . The conference incorporates teams in Texas, Oklahoma, and Louisiana and is divided into two divisions, Division I and Division II.-Division I:Currently twelve institutions make...
  
  , lacrosse-only athletic conference.
• Lute
  Lute
  Lute can refer generally to any plucked string instrument with a neck and a deep round back, or more specifically to an instrument from the family of European lutes....
  
   Society of America, an association of people interested in the historical European lute
• Lutheran Services in America
  Lutheran Services in America
  Lutheran Services in America is a not-for-profit corporation that coordinates the work of nearly 300 independent Lutheran health and human service organizations affiliated with the Evangelical Lutheran Church in America or recognized by The Lutheran Church-Missouri Synod. It is headquartered in...
  
  , the largest network of human service organizations in the United States.

In education and academia

• College of Literature, Science, and the Arts
  University of Michigan College of Literature, Science, and the Arts
  The University of Michigan College of Literature, Science, and the Arts is the liberal arts and sciences unit of the University of Michigan in Ann Arbor. Established in 1841 with seven students and two teachers, the college is currently the largest unit at U-M in terms of the number of students...
  
   at the University of Michigan
• La Salle Academy
  La Salle Academy
  La Salle Academy is a private, all boys high school in the New York City borough of Manhattan. It is a part of the Roman Catholic Archdiocese of New York....
  
  , a private, Catholic, all boys high school in New York City.
• Lakshmipat Singhania Academy
  Lakshmipat Singhania Academy
  Lakshmipat Singhania Academy are a group of schools run by Lakshmipat Singhania Education Foundation, a subsidiary of the J.K. Group. There are two branches of LSA - in Kolkata, West Bengal and Bissau, Churu District, Rajasthan. The schools are affiliated to the Central Board of Secondary Education...
  
  , a group of non-profit schools in India.
• Latvijas Studentu apvienība, the student union of Latvia
• Learning Support Assistant, an alternative term for support teacher
  Teacher
  A teacher or schoolteacher is a person who provides education for pupils and students . The role of teacher is often formal and ongoing, carried out at a school or other place of formal education. In many countries, a person who wishes to become a teacher must first obtain specified professional...
  
  s

Other

• Lighting & Sound America, an entertainment technology magazine published by PLASA Media Inc
• Linseed
  Flax
  Flax is a member of the genus Linum in the family Linaceae. It is native to the region extending from the eastern Mediterranean to India and was probably first domesticated in the Fertile Crescent...
  
   Sunflower
  Sunflower seed
  The sunflower seed is the fruit of the sunflower . The term "sunflower seed" is actually a misnomer when applied to the seed in its pericarp . Botanically speaking, it is more properly referred to as an achene. When dehulled, the edible remainder is called the sunflower kernel.There are three types...
  
   Almond
  Almond
  The almond , is a species of tree native to the Middle East and South Asia. Almond is also the name of the edible and widely cultivated seed of this tree...
  
  , a health food that is a ground mixture of these three seeds.