| Abbreviation | Definition |
|---|---|
| IOS | Inside Our Souls |
| IOS | It's Our Secret |
| IOU | I Owe Unto |
| IOU | I Owe You |
| IOU | Investor Owned Utilities |
| IOU1 | I owe you one |
| IOW | In Other Words |
| IOW | n Other Words |
| IPBB | IP BackBone |
| IPD | Inducing The Pleasure Dreams |
| IPLY | I Platonically Love You |
| IPN | I’m Posting Naked |
| IPN | Im Posting Naked |
| IPO | I Peek Out |
| IPPGE | I Play Pokemon Go Everyday |
| IPSO | Internet Protocol (IP) Smart Object |
| IPVP | Indirect Player vs Player |
| IQ | Ignorance Quotient |
| IQ | Ignorant Question |
| IQ | Imbicility Quotient |