GISN
| Acronym | Definition |
|---|---|
| GISN | Global Influenza Surveillance Network |
| GISN | Global Ip Telephony Subscriber Number |
| GISN | Global Information Server Node (Mountain Forum) |
| GISN | Georgia Interpreting Services Network (Atlanta, GA) |
| GISN | Global IP-Telephony Subscriber Number |
| GISN | Global Intelligent Services Network |