| Abbreveation | | description |
| U | | You |
| UI! | | You Idiot! |
| U2 | | You Too |
| STATS | | Your sex and age |
| U4E | | Yours For Ever |
| URAQT | | you are a cutie |
| URAS | | you are a star |
| Y | | why |
| YR | | Why Are |
| UR | | your |
| YYSSW | | yeah yeah sure sure whatever |
| YBS | | You’ll be Sorry |
| URT1 | | Your are the one |
| URW | | You are welcome |
| URYY4M | | You are too wise for me |
| YA | | Yet another |
| YABA | | Yet another bloody acronym |
| YACC | | Yet another calendar company |
| YAFIYGI | | You asked for it, you got it |
| YGIAGAM | | Your guess is as good as mine |
| YGWYPF | | You get what you pay for |
| YIC | | Yours in Christ |
| YM | | Young man |
| YMMV | | Your mileage may vary |
| YNK | | You never know |
| YSYD | | Yeah, sure you do |
| YTTT | | You telling the truth? |
| UL | | You Will? |
| UR | | You Are? |
| URWS | | You Are Wise |
| YA yaya | | Yet Another Ya-Ya (as in yo-yo) |
| YCT | | Your Comment To |
| YHM | | You have mail |
| YKW | | You Know What? |
| YW | | You are Welcome |
| JOO | | You |
