| Abbreviation | Definition |
|---|---|
| INRA | International Nuclear Regulators Association |
| INS | Immigration and Naturalization Services |
| Int | International |
| INTELSAT | International Telecommunications Satellite Organization |
| INTL | International |
| Int'l | International |
| INTRA | INTegrated Regulatory Authorities |
| Intraterms | International Trade Terms |
| IOCM | InterObjective Comparison Material |
| IODC | International Operator Direct Call |
| IODC | Inter-Office Dial Codes |
| IOL | ISO-Outlay Line |
| IOP | International Operations Personnel |
| IOS | International Outsourcing Services |
| IOS | Investors Overseas Services |
| IPA | Free Trade Agreement Port |
| IPBD | International Prime Brokerage Department |
| IPC | Illustrated Parts Catalogue |
| IPC | International Patent Classification |
| IPC | Iso Product Curve |