| Acronym | Definition |
|---|
| IGB➣Illinois Gaming Board |
| IGB➣Internationaler Gewerkschaftsbund (German: International Trade Union Federation) |
| IGB➣Istituto di Genetica e Biofisica (Italy) |
| IGB➣Inner-German Border (former boundary/border between East and West Germany) |
| IGB➣Illegal Gambling Business |
| IGB➣Inlet Gearbox (gas turbines) |
| IGB➣Institute & Guild of Brewing (now known as the Institute of Brewing & Distilling; UK) |
| IGB➣Intermediate Gear Box |
| IGB➣International Gravimetric Bureau (France) |
| IGB➣(Fraunhofer) Institut für Grenzflächen- und Bioverfahrenstechnik, Stuttgart, Germany |