| Rank | Abbreviation | Meaning |
|---|
| ***** | GCTC | Graphic Communication Technology Corporation
| |
| ***** | GCTC | Grant Connell Tennis Centre
| |
| **** | GCTC | Gleason Cutting Tools Corporation
| |
| **** | GCTC | Global Commodities Trade Centre
| |
| **** | GCTC | Global Computer Training Center
| |
| **** | GCTC | Great Canadian Theatre Company
| |
| **** | GCTC | Gold Country Trails Council
| |
| **** | GCTC | Greater Christ Temple Church
| |
| **** | GCTC | Girard Coal and Tile Company
| |
| **** | GCTC | Gold Coast Turf Club
| |
| *** | GCTC | Great Canadian Theatre Company's
| |
| *** | GCTC | Glory of Christ Tanzania Church
| |
| *** | GCTC | Gulf Coast Technology Council
| |
| *** | GCTC | Gulf Coast Town Center
| |
| *** | GCTC | Gulf Coast Trade Center
| |
| *** | GCTC | Greene County Technology Consortium
| |
| *** | GCTC | Gulf Chinese Trading Corporation
| |
| ** | GCTC | Greenberry Coffee and Tea Company
| |
| ** | GCTC | Great Commission Training Center
| |
| ** | GCTC | Grant County Tourism Council
| |
| ** | GCTC | Gagarin Cosmonaut Training Center
| |
| ** | GCTC | Green Country Technology Center
| |
| ** | GCTC | Gateway Community Technical College
| |
| ** | GCTC | Grinnell College Track and Cross
| |
| ** | GCTC | Gulf Coast Transgender Community
| |