| Abbreviation | Definition |
|---|---|
| INTERPOL | International criminal police organization |
| INWL | Illinois Noxious Weed Law |
| IO | Iron Out |
| IOC | Instrument Of Commitment |
| IOC | International Organized Crime |
| IOCA | Interception Of Communications Act |
| IODL | Indiana Open Door Law |
| IOJ | Instruments of Justice |
| IOLA | Interest on Lawyer Account |
| IOLA | Interest On Lawyers Account |
| IOLM | International Organization for Legal Metrology |
| IOLTA | Interest on Lawyer Trust Accounts |
| IOLTA | Interest on Lawyers Trust Accounts |
| IOLTA | Interest on Lawyers' Trust Accounts |
| IOP | Invasion Of Privacy |
| IP | Identity Preserved |
| IP | Intellectual Property |
| IP | Interesting Persons |
| IPA | International Police Association |
| IPAA | Intellectual Property Attache Act |