| Rank | Abbreviation | Meaning |
|---|
| ***** | SGMC | Stilfontein Gold Mining Company, Ltd.
| |
| ***** | SGMC | South Georgia Medical Center
| |
| **** | SGMC | South Granville Medical Center
| |
| **** | SGMC | Schweizerische Gesellschaft für Medizinische Codierung
| |
| **** | SGMC | S Genetics Medical Center
| |
| **** | SGMC | Shafallah Genetics Medical Center
| |
| *** | SGMC | Sir George Monoux College
| |
| *** | SGMC | Strategic Gamers Master Clan
| |
| *** | SGMC | Sustainable Growth Management in Cairo
| |
| *** | SGMC | Sutter Gold Mining Company
| |
| ** | SGMC | South Georgia Medical Center's
| |
| ** | SGMC | Standing Group Meteorological Committee
| |
| ** | SGMC | Suffolk Gem and Mineral Club
| |
| * | SGMC | Sterling Gold Mining Corporation
| |
| * | SGMC | State Gold Mining Corporation
| |
| * | SGMC | Subgroup on Marine Climatology
| |
| * | SGMC | Strategic Goods Movement Corridor
| |
| * | SGMC | Specialist Groups Management Committee
| |
| * | SGMC | Selective Gut Microcirculatory Control
| |
| * | SGMC | Student Government Movie Channel
| |
| * | SGMC | Strategic Global Marketing Corporation
| |
| * | SGMC | Shannondale Gypsy Moth Committee
| |
| * | SGMC | Smithsoniam Gem and Mineral Collection
| |
| * | SGMC | Shands Gainesville Medical Center
| |
| * | SGMC | Smithonian Gem and Mineral Collection
| |