Lg1

lg1 or variation, may refer to:

• La Grande-1 generating station (LG-1), Quebec, Canada
• Lehrgeschwader 1 (LG 1; German: Training Wing 1), WWII German Luftwaffe air wing
• GIAT LG1, 105 mm towed howitzer
• Gibson LG-1 acoustic guitar, see Gibson L Series
• First late glacial (LG1), a period of the Older Dryas ice age
• Laminin G domain 1 (LG1)
• Lower Group 1, of the Bushveld Igneous Complex
• Chiang Kai-shek Memorial Hall metro station (station code LG01) on the Tamsui–Xinyi line, Songshan–Xindian line, and Wanda–Zhonghe–Shulin line in Taipei, Taiwan
• Aizkraukle district (LG01), Latvia; see List of FIPS region codes (J–L)