MGI may refer to:
- Meghna Group of Industries (MGI), A conglomerates in Bangladesh
- MGI (company), Biotechnology company in China
- Millar Gough Ink, Production company in America
- Martín García Island Airport, in Argentina
- Materials Genome Initiative, an federal initiative for materials discovery
- McKinsey Global Institute
- Miss Grand International, a beauty pageant franchise based in Thailand
- Miss Grand International (company), a conglomerate company in Thailand
- Mouse Genome Informatics, an online database
- Jili language, spoken in Nigeria
