MFG can refer to:

• Madagascar Fauna Group, a conservation organization working in Germany with headquarters in Berlin and Munich
• Magellan Financial Group's ticker symbol on the Australian Securities Exchange
• An abbreviation for manufacturing
• Marinefliegergeschwader, an aviation unit of the German Navy
• Mean field games
• MFG.com, an online marketplace serving the global manufacturing community
• MfG or mfg, German-language abbreviation for mit freundlichem Gruß or mit freundlichen Grüßen, with the meaning of Best Regards, very common in electronic communication
• MfG, a song by Die Fantastischen Vier referring to this greeting
• Middle frontal gyrus, a brain region
• Mixed flowing gas testing, a type of laboratory environmental testing
• Mizuho Financial Group's ticker symbol on the New York Stock Exchange
• Muzaffarabad Airport, IATA code
• MFG – Austria People – Freedom – Fundamental Rights - Austrian anti-vaccination party