| Acronym | Definition |
|---|
| GSIC➣Global Scientific Information and Computing Center (Tokyo Institute of Technology; Japan) |
| GSIC➣Government of Singapore Investment Corporation |
| GSIC➣Group Successive Interference Cancellation |
| GSIC➣Grey Sisters of the Immaculate Conception (Pembroke, Ontario, Canada) |
| GSIC➣Global Studies Integrated Curriculum (various schools) |
| GSIC➣Gujarat Small Industries Corporation (est. 1962; India) |
| GSIC➣Golden State Insulator Club (California) |