| ISEP | Indiana State Excise Police 
| Others |
| ISEP | Infolady Social Entrepreneurship Programme
| Others |
| ISEP | Innovative Special Education Project
| Others |
| ISEP | Institute for Sustainable Energy Policies
| Others |
| ISEP | Instituto Superior de Engenharia do Porto
| Others |
| ISEP | Interdisciplinary Science and Engineering Partnership
| Others |
| ISEP | International Society for Ecological Psychology
| Others |
| ISEP | International Society for Environmental Protection
| Others |
| ISEP | International Society for Evolutionary Protistology
| Others |
| ISEP | International Society of Educators in Physiotherapy
| Others |
| ISEP | International Student Entry Plus
| Others |
| ISEP | International Student Excellence Programs
| Others |
| ISEP | International Student Exchange Program
| Others |
| ISEP | International Student Exchange Programs
| Others |
| ISEP | Islington Sustainable Energy Partnership
| Others |