| Abbreviation | Definition |
|---|---|
| IAOMWH | I Am On My Way Home |
| IAR | I Am Replying |
| IARY | I'll Always Remember You |
| IAS | I Am Sick |
| IASNLIHSG | I Am Seriously Not Lying I Have Seven Girlfriends |
| IASS | I Am So Sorry |
| IAST | I Am So Tired |
| IAT | In Addition To |
| IATG | I Am The Greatest |
| IATSE | I Already Tried Something Else |
| IAW | I Am Waiting |
| IAWT | I Agree With That |
| IAWTC | I Agree With This Comment |
| IB | I'm Back |
| IB | I'm Bored |
| IB | International Baccalaureate |
| IB | Internet Boyfriend |
| IB | Itty Bitty |
| IB2D | I Beg To Differ |
| IBB | I'll Be Back |