| Rank | Abbreviation | Meaning |
|---|
| ***** | GBSA | General Business Security Agreement
| |
| *** | GBSA | Ghana Baseball and Softball Association
| |
| ** | GBSA | Gulf Breeze Sports Association
| |
| * | GBSA | Georgian Bay Sailing Association
| |
| * | GBSA | Gay, Bisexual, Straight Alliance
| |
| * | GBSA | Gibraltar Bongo Seat Attachment
| |
| * | GBSA | Great Britain Soccer Association
| |
| * | GBSA | Green Bay South Academy
| |
| * | GBSA | Gay Bi Straight Alliance
| |
| * | GBSA | Gay Bisexual Student Alliance
| |
| * | GBSA | Grandview Baseball Softball Association
| |
| * | GBSA | Grapevine Baseball Softball Association
| |
| * | GBSA | Greater Baltimore Swim Association
| |
| * | GBSA | Grab Bag Snack Attack
| |
| * | GBSA | Greater Black Sea Area
| |
| * | GBSA | Generalized Born Surface Area
| |
| * | GBSA | Ghana Biochemistry Students' Association
| |
| * | GBSA | Graduate Business Student Association
| |
| * | GBSA | Greenwich Bay Sailing Association
| |
| * | GBSA | Graphics-Based Supervisory Architecture
| |
| * | GBSA | Gulf Bond and Sukuk Association
| |
| * | GBSA | Generalized Born/Solvent-Accessible Surface
| |
| * | GBSA | George Bray Sports Association
| |
| * | GBSA | Group B Strep Association
| |
| * | GBSA | Gimbal Bracket Swivel Adapter
| |