ALG may refer to:

• Algebra
• Algeria
• A-League, domestic football league in Australasia
• Algonquian languages, from its ISO 639 code
• American Laser Games
• Americans for Limited Government
• Anti-lymphocyte globulin, an immunosuppressive drug
• Application-level gateway
• Association of London Government
• Houari Boumedienne Airport, Algiers, Algeria, from its IATA airport code
• Advanced Landing Ground, tactical airfield created by the Allies in World War II
• Art. Lebedev Group, the holding company which owns Art. Lebedev Studio
• ALG (Advanced Landing Ground) Wormhout
• ALG Inc, a California source for automotive residual values.
• The F1 acronym of Jaime Alguersuari

de:ALG eo:ALG fa:ALG fr:ALG it:ALG lv:ALG ja:ALG zh:ALG