LG2 or variation, may refer to:

• La Grande-2 generating station (LG-2), Quebec, Canada
• Lehrgeschwader 2 (LG 2; German: Demonstration Wing 2), German WWII Luftwaffe air wing
• Lechia II Gdańsk (LG2) soccer team
• Gibson LG-2 acoustic guitar, see Gibson L Series
• Buick LG2, a Buick V6 engine
• binary logarithm (lg₂)
• Laminin G domain 2 (LG2)
• Lg2, a virulent strain of the fish pathogen Lactococcus garvieae
• Second late glacial (LG2), a period of the Older Dryas ice age
• Lower Group 2, of the Bushveld Igneous Complex
• Taipei Botanical Garden metro station (station code LG02) on the Wanda–Zhonghe–Shulin line in Taipei, Taiwan
• Alūksne District (LG02), Latvia; see List of FIPS region codes (J–L)

• 2LG
• LG (disambiguation)
• LGG (disambiguation)
• IG2