| Abbreviation | Definition |
|---|---|
| UFO | Undeniably Fanciful Observation |
| UFO | Underestimated Flying Osmond |
| UFO | Underground Freak Out |
| UFO | Underground Funk Operatives |
| UFO | Undrinkable Fleischmanns Obscenity |
| UFO | Unidentified Flashing Object |
| UFO | Unidentified Flying Odd-ball |
| UFO | Unidentified Foul Odor |
| UFO | Unidentified Fur Object |
| UFO | United Father Orbiters |
| UFO | Unofficial Frolijah Obsession |
| UFR | Urgent Facial Repair |
| UFW | U Fail to Win |
| UFX | Ultimate Fire Xclamation |
| UGA | U Go Away |
| UGA | Undaunted Gator Attackers |
| UGA | UnderGround Airways |
| UGA | Unique Great American University |
| UGA | University God Adores |
| UGA | University of Gator Abusers |