| Rank | Abbreviation | Meaning |
|---|
| ***** | GCSC | Golden Circle Social Club
| |
| **** | GCSC | Gay Community Services Center
| |
| **** | GCSC | International Graduate Centre for the Study of Culture
| |
| **** | GCSC | Global Client Support Center
| |
| **** | GCSC | Golf Club of South Carolina
| |
| **** | GCSC | General Command and Staff College
| |
| **** | GCSC | Groupe de Consultations Sectorielles sur le Commerce
| |
| **** | GCSC | Guidance Control and Sequencing Computer
| |
| **** | GCSC | Graduate Centre for the Study of Culture
| |
| **** | GCSC | German Counter Strike Clan
| |
| **** | GCSC | Gun Computer System Cabinet
| |
| **** | GCSC | Greenfield Central School Corporation
| |
| **** | GCSC | Gulf Coast Safety Council
| |
| **** | GCSC | Georgia Christian Student Center
| |
| **** | GCSC | Global Customer Support Center
| |
| **** | GCSC | Greenwood Community School Corporation
| |
| **** | GCSC | Graduate Certificate of Science
| |
| **** | GCSC | Glasgow City Social Club
| |
| **** | GCSC | General Certificate of Secondary
| |
| **** | GCSC | Graduate Center for the Study of Culture
| |
| **** | GCSC | Garden Club of South Carolina
| |
| *** | GCSC | Gulf Coast Sailing Club
| |
| *** | GCSC | Global Competence Support Centre
| |
| *** | GCSC | Great Canadian Shoreline Cleanup
| |
| *** | GCSC | Georgia Child Support Commission
| |