FLG may refer to:

• Endeavor Air, an American regional airline
• Farmer-Labour Group, a Canadian political party, now the Saskatchewan New Democratic Party
• Flagstaff Pulliam Airport, in Arizona, United States
• Flagstaff station, Arizona
• Filaggrin, encoded by the FLG gene
• Flaming Lotus Girls, an American collaborative art group
• Florida Georgia Line, an American bro-country duo
• Friedhelm Loh Group, a German manufacturing firm
• Friends Life Group, a Guernsey financial firm
• Falun Gong

• Frederick Marks (disambiguation)
• Frederick Marlow
• Frederick Marquis, 1st Baron Woolton
• Frederick Marquis, 1st Viscount Woolton
• Frederick Marriott (Australian politician)
• Frederick Marsden
• Frederick Marshall (disambiguation)
• Frederick Marten
• Frederick Martin (editor)
• Frederick Martin (writer)
• Frederick Marx
• Frederick Maryland
• Frederick Mason Brewer
• Frederick Mason (wrestler)
• Frederick Masoudi
• Frederick Maurice van Heiden
• Frederick M. Ausubel
• Frederick Maxfield Parrish
• Frederick Maxse
• Frederick May (disambiguation)
• Frederick Mayes
• Frederick Maze
• Frederick M. Bird
• Frederick McCarthy
• Frederick McClintock