| Abbreviation | Definition |
|---|---|
| IAPAC | Iranian American Political Action Committee |
| IAPC | Italian American Political Coalition |
| IAPSS | International Association of Political Science Students |
| IBLC | Indiana Black Legislative Caucus |
| ICCF | Inner City Christian Federation |
| ICCF | Intercommunal Committee to Combat Fascism |
| ICCPR | International Convention on Civil and Political Rights |
| ICCPR | International Covenant of Civil and Political Rights |
| ICCPR | International Covenant on Civil Political Rights |
| ICDP | International Centre for Democratic Partnerships |
| ICDP | International Confederation for Disarmament and Peace |
| ICP | International Communist Party |
| ICP | Iraqi Communist Party |
| ICSL | Indian Counter Strike League |
| ICT | Institute for Counter-Terrorism |
| ID | Izquierda Democrática |
| IDEA | Institute for Democratic Education in America |
| IDEE | Institute for Democracy in Eastern Europe |
| IDEN | International Democratic Education Network |
| IDTC | Iran Democratic Transition Conference |