| Abbreviation | Definition |
|---|---|
| IB | International Baccalaureate |
| IB | International Baccalaureus |
| IB | ISO-Baric |
| IBBA | International Bachelor of Business Administration |
| IBEM | International Business for Emerging Markets |
| IBFS | International Bachelor of Food Science |
| IBIT | International Business and Information Technology |
| IBS | International Business Studies |
| IBST | Institute for Building Science and Technology |
| IBT | Impact Bend Test |
| IC | Information and Communication |
| IC | Isothermal Calorimeter |
| ICE | Integrated Chemical Engineering |
| ICS | Intermediate in Computer Sciences |
| ICS | International Comparative Studies |
| icse | Indian Certificate of Secondary Education |
| ICT | Impact Compression Test |
| ICTP | Internet Configuration Test Protocol |
| ID | Identifier |
| IDBC | International Diploma in Bilingual Communications |