| Acronym | Definition |
|---|
| ICSG➣International Copper Study Group (intergovernmental organization; Lisbon, Portugal) |
| ICSG➣International Conference on Structural Genomics |
| ICSG➣Irish Centre for Social Gerontology (National University of Ireland) |
| ICSG➣Internet Communications Software Group (Cisco Systems, Inc.) |
| ICSG➣Italian Cooperative Study Group (chronic myeloid leukemia) |
| ICSG➣Interstitial Cystitis Support Group (England, UK) |
| ICSG➣International Centre of Social Gerontology |
| ICSG➣International Council of Surgical Gastroenterology |
| ICSG➣Internet Cancer Support Group |
| ICSG➣International Convention on the Sale of Goods (treaty) |