| Acronym | Definition |
|---|
| USEF➣United States Equestrian Federation |
| USEF➣Unmanned Space Experiment Free Flyer |
| USEF➣United States Elite Force (gaming clan) |
| USEF➣United States Educational Foundation (various countries) |
| USEF➣United States-Egypt Friendship Society |
| USEF➣United States Entertainment Force |
| USEF➣Union Schools Education Foundation |
| USEF➣University Students Emergency Fund |
| USEF➣University Student Evaluation of Faculty |
| USEF➣University Sales Education Foundation (Dayton, OH) |