| SIGI | System for Interactive Guidance and Information | 交互式指导和信息系统 |
| SIGI | Space Integrated GPS/INS | 空间GPS / INS |
| SIGI | Sisterhood Is Global Institute | 姐妹会是全球研究所 |
| SIGI | Selective Insurance Group, Inc. | 选择性保险集团。 |
| SIGI | System for Interactive Guidance Information | 交互式制导信息系统 |
| SIGI | System Of Interactive Guidance And Information | 交互式制导和信息系统 |