FDG may refer to:
Politics Democratic Forces of Guiana (French: ), a political party in French Guiana Left Front (France) or , an electoral federation Youth Front (), the youth wing of the neofascist Italian Social Movement
Science Fluorodeoxyglucose (18F) Fluid dynamic gauge
Other uses Fording Canadian Coal Trust, a Canadian corporation (2003–2008) Friedrich-Dessauer-Gymnasium, Frankfurt, a school in Germany Functional discourse grammar, a linguistic model