| H&K | Hug and Kiss |
| h/o | Hold On |
| h/p | Hold Please |
| H4XX0R | Hacker -or- To Be Hacked |
| HAGD | Have a Great Day |
| HAGN | Have A Good Night |
| HAGO | Have A Good One |
| HAK | Hugs And Kisses |
| HAND | Have a Nice Day |
| HAWTLW | Hello And Welcome To Last Week |
| HB | Hurry Back |
| HBB | Hip Beyond Belief |
| HBIB | Hot But Inappropriate Boy |
| HCC | Holy Computer Crap |
| HD | Hold |
| HF | Hello Friend -or- Have Fun -or- Have Faith |
| HHIS | Hanging Head In Shame |
| HHO1/2K | Ha Ha, Only Half Kidding |
| HHOJ | Ha-Ha, Only Joking |
| HHOK | Ha Ha, Only Kidding |
| HHOS | Ha-Ha, Only Being Serious |
| HHTYAY | Happy Holidays To You And Yours |
| HIG | How's It Going |
| HIH | Hope It Helps |
| HIOOC | Help, I'm Out Of Coffee |
| HITAKS | Hang In There And Keep Smiling |
| HMFIC | Head MOFO In Charge |
| HNTI | How Nice That/This Is |
| HNTW | How Nice That Was |
| HO | Hold On |
| HOHA | HOllywood HAcker |
| HOIC | Hold On, I'm Coming |
| HP | Higher Power |
| HSIK | How Should I Know |
| HT | Hi There |
| HTB | Hang The Bastards |
| HTH | Hope This (or That) Helps |
| HTNOTH | Hit The Nail On The Head |
| HUA | Heads Up Ace -or- Head Up Ass |
| HUGZ | Hugs |
| HUYA | Head Up Your Ass |
| HWGA | Here We Go Again |
|
