Lang
Lang may refer to:
- Lang (surname), a surname of independent Germanic or Chinese origin
 
Places
- Lang Island (Antarctica), East Antarctica
 - Lang Nunatak, Antarctica
 - Lang Sound, Antarctica
 - Lang Park, a stadium in Brisbane, Australia
 - Lang, New South Wales, a locality in Australia
 - Division of Lang, a former Australian electoral division.
 - Electoral district of Sydney-Lang, a former New South Wales electoral division.
 - Lang, Austria, a town in Leibniz, Styria, Austria
 - Lang, Saskatchewan, a Canadian village
 - Lang Island, Sunda Strait, Indonesia
 - Lang, Iran, a village in Gilan Province, Iran
 - Lang Varkshi, Khuzestan Province, Iran
 - Lang Glacier, Bernese Alps, Valais, Switzerland
 - Lang Suan District, southern Thailand
 - Lang County, or Nang County, Tibet
 - Lang, Georgia, United States
 - Lang Chánh District, Vietnam
 - Lang Trang, a cave formation located in Vietnam
 
Computing
- S-Lang, a programming language created in 1992
 - LANG, environment variable in POSIX standard that sets multiple locale parameters
 - The 
LANGattribute in HTML, for identifying the language of content 
Other uses
- "Langue", Ferdinand de Saussure's linguistic term for "competency" or "I-language" (both Chomsky), referring to a cognitive "language" as distinct from surface forms—natural spoken language
 - Lang, variety of the jujube tree, whose fruits have a thicker skin compared to the fruits of other varieties
 - Lang Film, a film and TV production company in Freienstein, Switzerland
 - Lang Law, the informal name given to French law relating to book prices
 - Lang Propellers, British company specializing in aircraft propellers
 - Lang School, U.S. private school for gifted students, New York City
 - Lang Syne Plantation, U.S. plantation near St. Matthews, Calhoun County, South Carolina
 - Lang Van, a Vietnamese production company in Westminster, CA and Ho Chi Minh City
 - Battle of Lang Vei, Vietnam War