| Acronym | Definition |
|---|
| IGSN➣International Graduate School of Neuroscience (Ruhr University Bochum; Germany) |
| IGSN➣International Gravity Standardization Net |
| IGSN➣International Geo Sample Number |
| IGSN➣Internet GPRS Support Node |
| IGSN➣International Gramsci Society Newsletter |
| IGSN➣Integrated GPRS Serving Node (SGSN and GGSN Into A Single Node; for Mobile IP in GPRS) |
| IGSN➣Inspection Générale pour la Sûreté Nucléaire (French: General Inspectorate for Nuclear Safety) |