| Acronym | Definition |
|---|
| IGL | Indraprastha Gas Limited (India) |
| IGL | In-Game Leader |
| IGL | Institute for Global Leadership (Tufts University; Medford, MA) |
| IGL | Instituto Gregoriano de Lisboa (music school in Lisbon, Portugal) |
| IGL | India Glycols Ltd. (petrochemical) |
| IGL | Integrated Global Logistics (various locations) |
| IGL | Intergeniculate Leaflet |
| IGL | Intelligence Gain/Loss (US DoD) |
| IGL | Ineos Group Limited (UK) |
| IGL | India Gospel League |
| IGL | Iron Glove League (gaming clan) |
| IGL | Investors Guaranty Life Insurance Company (subsidiary of Farmers Insurance Group) |
| IGL | Internal Guidance Line |
| IGL | Interoperable Ground Data Link |