| AEGIS | A European Genebank Integration System 
| Others |
| AEGIS | Accessibility Everywhere Groundwork Infrastructure Standards
| Others |
| AEGIS | Activating and Energizing Girls in Science
| Others |
| AEGIS | ADROIT Electronically Generated Information Service
| Others |
| AEGIS | Advanced EHS Global Information System
| Others |
| AEGIS | Agent Engineering For Generation Of Information Systems
| Others |
| AEGIS | AIDS Education Global Information Service
| Others |
| AEGIS | Aids Education Global Information System
| Others |
| AEGIS | Airborne Early Warning/Ground Environment Integration Segment
| Others |
| AEGIS | Alien Exterminating Global Intercept System
| Others |
| AEGIS | Alien Extermination Global Intercept System
| Others |
| AEGIS | All-Wavelength Extended Groth Strip International Survey
| Others |
| AEGIS | Alliance of Eclectic Gamers and Interactive Storytellers
| Others |
| AEGIS | American Educational Gender Information Service
| Others |
| AEGIS | An Educational Geographical Information System
| Others |
| AEGIS | An Expanded Genetic Information System
| Others |
| AEGIS | Antihydrogen Experiment Gravity Interferometry Spectroscopy
| Others |
| AEGIS | Antimatter Experiment Gravity Interferometry Spectroscopy
| Others |
| AEGIS | Aperture Employee Guardian and Intrusion System
| Others |
| AEGIS | Aptamer Evolution for Global In Situ
| Others |
| AEGIS | Assessment of Effectiveness of Geologic Isolation Systems
| Others |
| AEGIS | Associated Electric Gas Insurance Services
| Others |
| AEGIS | Association of Educational Guardians for International Students
| Others |
| AEGIS | Automatic Electronic Guided-missile Intercept System
| Others |
| AEGIS | Autonomous Exploration for Gathering Increased Science
| Others |