MDG is an abbreviation for Millennium Development Goals.

MDG, or mdg, may also refer to:

• Malaysian Dreamgirl, an online reality television program
• MDG, the IATA code for Mudanjiang Hailang Airport in Heilongjiang Province, China
• MDG, the ISO, ITU and NATO code for Madagascar, a sovereign state and island country
• MDG, the National Rail code for Midgham railway station in the county of Berkshire, UK
• Miljøpartiet De Grønne, the Green Party of Norway
• Monocable Detachable Gondola; cf. Aerial lift#Abbreviations
• Musikproduktion Dabringhaus und Grimm, German classical recording company