| Acrónimos de Internet | Acrónimos Sociales |
| ASCII Emoticons | ASCII Code | Netiquette |
A B C D E F G H I J K L M N O P Q R S T U V W X Y Z
Acrónimos Sociales
U
| Término | Significado |
| U2 | You Too |
| UAE | Unrecoverable Application Error (Bane of Windows' users!) |
| UAPITA | You're A Pain In The Ass |
| UBD | User Brain Damage |
| UDS | Ugly Domestic Scene |
| UFO | Unidentified Flying/Falling Object |
| UL | Upload, send to the BBS |
| UNA | Use No Acronyms |
| UNCLE | Unified Nuclear Coalition of Latvian Emigrants |
| UOK | yoU OK? |
| UR | You Are ... |
| URL | Uniform Resource Locator |
| URLCM | yoU aRe weLCoMe |
| USU | USUally (frequently just "usu.") |
| UTC | Under The Counter; |
| UTT | Under The Table |
| UW | You're Welcome |