| Rank | Abbreviation | Meaning |
|---|
| ***** | GNAC | Generator Neutral Accessory Compartment
| |
| **** | GNAC | Groupement National des Agents Citroën
| |
| *** | GNAC | Great Northeast Athletic Conference
| |
| *** | GNAC | Global Networking and Computing
| |
| ** | GNAC | Good Neighbor Alliance Corporation
| |
| ** | GNAC | Glass Non Adherent Cells
| |
| * | GNAC | Guodian Nanjing Automation Company
| |
| * | GNAC | Greater Nashville Athletic Club
| |
| * | GNAC | Georgia Nuclear Advisory Commission
| |
| * | GNAC | Greater Nashville Athletic Conference
| |
| * | GNAC | Great Northwest Athletic Conference's
| |
| * | GNAC | Greater Nebraska Athletic Conference
| |
| * | GNAC | Guide to Non Academic Careers
| |
| * | GNAC | Greater Northeast Athletic Conference
| |
| * | GNAC | Great Neck Arts Center
| |
| * | GNAC | Graphic Novel and Anime Club
| |
| * | GNAC | Going Natural Across Canada
| |
| * | GNAC | Glenmont National Alliance Committee
| |
| * | GNAC | Government and Nonprofit Assistance Center
| |
| * | GNAC | Great Northeast Atlantic Conference
| |
| * | GNAC | Golden Nugget Atlantic City
| |
| * | GNAC | Governmental and Nonprofit Assistance Center
| |
| * | GNAC | Global Network for Academic Collaboration
| |
| * | GNAC | Greater Northwest Athletic Conference
| |
| * | GNAC | Great North Atlantic Conference
| |