| Abbreviation | Definition |
|---|---|
| SGC | Stanford Group Company |
| SGC | Studio Griz Corporation |
| SGC | Supplier Group Company |
| SGCA | Single Global Currency Association |
| SGCC | State Grid Corporation of China |
| SGCI | Spectrum Global Communications Inc |
| SGD | Scrappin' Great Deals |
| SGD | Specialty Gas Distributors |
| SGD | Steve Gibson Design, Sheffield, England |
| SGDI | Sarah Gallop Design Inc |
| SGEE | Sino Gulf Energy Enterprises |
| SGFCL | Sylhet Gas Field Company Ltd |
| SGG | Silver Gate Group |
| SGH | Simpson, Gumpertz, & Heger Engineering |
| SGI | Saskatchewan Government Insurance |
| SGI | Silicon Graphics Inc |
| SGI | Silicon Graphics Incorporated |
| SGI | Soka Gakkai International |
| SGI | Solid Group Inc |
| SGI | Soxware Games Inc |