| Abbreviation | Definition |
|---|---|
| IPTF | Intellectual Property Task Force |
| IPTK | Intellectual Property and Traditional Knowledge |
| IPTL | Intellectual Property / Technology Law |
| IPV | Intentional Program Violation |
| IPV | Intimate Partner Violence |
| IPVI | Intimate Partner Violence Injury |
| IPVP | Intimate Partner Violence Prevention |
| IQ | In Question |
| IQ | Irrelevant Question |
| IQ | Is Questionable |
| IRC | Inland Revenue Commissioner |
| IRC | Irish Republican Constabulary |
| IRCP | International Research on Criminal Policy |
| IREA | Investigation Revenue and Enforcement Administrator |
| IRELA | Illinois Real Estate Lawyers Association |
| IRIC | Incident Reporting and Investigation Centre |
| IRLJ | Infraction Rules for Courts of Limited Jurisdiction |
| IRM | Department of Commerce -- Information Resource Management Division |
| IRMC | Information Resource Management Commission |
| IRP | Investigative Review Panel |