IBG
- Forschungszentrum Jülich
- Giro (banking)
- Ibanag language
- Ibogainalog
- Idaho Botanical Garden
- Indian Army
- Indiana Botanic Gardens
- Institute for Behavioral Genetics
- Institute of Brewing and Distilling
- Intel Boot Guard
- Investment Bank of Greece
- LBG (disambiguation)
- List of airline codes (S)
- Royal Geographical Society