LG, Lg, or lg may refer to:

• Lateral giant interneuron, an interneuron in crayfish
• Lawrence Graham, a London headquartered firm of business lawyers
• LG Corp., a South Korean electronics and petrochemicals conglomerate

• LG Electronics, an affiliate of the South Korean LG Group which produces electronic products

• LG, the Euronext stock symbol of Lafarge
• LG, the NYSE stock symbol of Laclede Group
• Luxair S.A., Société Luxembourgeoise de Navigation Aérienne, operating as Luxair, the flag carrier airline of the Grand Duchy of Luxembourg by IATA code
• LG, post-nominal letters used to signify a Lady Companion of the Order of the Garter
• The common logarithm, or logarithm with base 10
• The binary logarithm, or logarithm with base 2
• Luganda, ISO 639-1 language code
• LG or Liouville–Green method, another name for the WKB approximation
• Lietuvos Geležinkeliai, Lithuanian state railway company

LG Corporation (Korean: LG법인) formerly Lucky Goldstar (Korean: Leokki Geumseong (럭키금성/樂喜金星) ) is a South Korean multinational conglomerate corporation. It is the fourth-largest chaebol in South Korea. It is headquartered in the LG Twin Towers building in Yeouido-dong, Yeongdeungpo-gu, Seoul. LG makes electronics, chemicals, and telecom products and operates subsidiaries such as LG Electronics, Zenith, LG Display, LG Uplus and LG Chem in over 80 countries.