| Abbreviation | Definition |
|---|---|
| IBD | I'm Bored, Dummy |
| IBEW | I've Been Everywhere |
| IBF | Internet Best Friend |
| IBFS | Internet Best Friends |
| IBFW | In Before the Flame War |
| IBIWISI | I'll Believe It When I See It |
| IBLH | I Be Laughing Hard |
| IBM | I'm By Myself |
| IBM | Inadequate But Marketable |
| IBP | I Buy Power |
| IBRB | I'll Be Right Back |
| IBRN | I'm Busy Right Now |
| IBT | I'll Be There |
| IBT | It's Bout Time |
| IBT4U | I'll Be There For You |
| IBTL | In Before The Lock |
| IBTT | I'll Be There Then |
| IBYP | I Beg Your Pardon |
| IC | See |
| IC | I Can |