FLEX
| Acronym | Definition |
|---|---|
| FLEX | Flexible Spending Account |
| FLEX | FEMA (Federal Employment Management Agency) Leadership Exercise |
| FLEX | Fast Lexical Analyzer |
| FLEX | Fast Lexical |
| FLEX | Force Level Execution |
| FLEX | Future Leaders Exchange (US State Department) |
| FLEX | Federation Licensing Examination |
| FLEX | Fleet Exercise |
| FLEX | Flexowriter Equipment |
| FLEX | File Exchange System |
| FLEX | Force Level Execution System |
| FLEX | Flame Extinguishment Experiment |