USEF
| 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) |