LG can refer to a number of things:

• LG Group - the Korean conglomerate
• lg - an abbreviation for logarithm of the base 2in informatics (an alternative to ld)
• LG - the acronym of Lietuvos geležinkeliai, the railways of Lithuania.
• LG - in post-nominal letters denotes a female membership of the Most Noble Order of the Garter
• the webcomic Little Gamers
• the IATA code for Luxair
• Leaf Green, one of the Pokemon games.