| ISPG | Image and Sound Processing Group 
| Others |
| ISPG | Independent Scholarly Publishers Group
| Others |
| ISPG | Independent School Performance Group
| Others |
| ISPG | Individual Support Planning Guide
| Others |
| ISPG | Info Security Products Guide
| Others |
| ISPG | Information Security and Privacy Group
| Others |
| ISPG | Institute of Sedimentary and Petroleum Geology
| Others |
| ISPG | Institutional Support Planning Group
| Others |
| ISPG | Integrated Settlement Participation Guide
| Others |
| ISPG | Integrated Signal Processing Group
| Others |
| ISPG | Integrated Streambank Protection Guidelines
| Others |
| ISPG | International School Peace Gardens
| Others |
| ISPG | International Society of Psychiatric Genetics
| Others |
| ISPG | International Spouse and Partners Gathering
| Others |
| ISPG | Irish Seafood Producers Group
| Others |
| ISPG | Irish Street Photography Group
| Others |