| UNLV94 ("Hope we find some life out there..Very interesting program, fun to see the progress. I have...") |  | udidwhat (" I live in rural Australia and I must say that I cannot abid large cities, not only because...") | |
| uplusmeeqlstrouble ("Pagan, Lesbian, and Proud! Artist from Kingston PA.") |  | unixphreak ("Public servant in the area of public safety communications systems, system administrator,...") | |
| Unreservingly apologize ("Hi fellow SETI enthusiasts and supporters, greetings from Malaysia. To fellow Malaysians,...") | unreal1171 ("i like comps") | ||
 | Ucaima ("Especialista en Telecomunicaciones y Broadcasting") | Unga Tjóðveldið ("Unga Tjóðveldið is translated into The Young Republic. It is located on the Faroes, just...") | |
 | Ugo ("Hi, my name is Ugo") |  | Ume-konbu-cya ("_") |
