| ISBL | Immigration Solutions Bureau Ltd 
| Others |
| ISBL | Indian School Badminton League
| Others |
| ISBL | Indian School Basketball League
| Others |
| ISBL | Indian Springs Branch Library
| Others |
| ISBL | Information Systems Base Language
| Others |
| ISBL | Information Systems Business Language
| Others |
| ISBL | InSide the Battery Limit
| Others |
| ISBL | Institute of School Business Leadership
| Others |
| ISBL | Institutions Sans But Lucratif
| Others |
| ISBL | Intelligent Systems and Bioinformatics Laboratory
| Others |
| ISBL | International Simulated Baseball League
| Others |
| ISBL | International Society of Biblical Literature
| Others |
| ISBL | International Society of Black Latinos
| Others |
| ISBL | International Society of Business Leadership
| Others |
| ISBL | International Specialty Brokers Limited
| Others |
| ISBL | International Student Basketball League
| Others |
| ISBL | International Symposium on Ball Lightning
| Others |
| ISBL | Inverted Short BaseLine
| Others |
| ISBL | It Should Behave Like
| Others |