| Abbreviation | Definition |
|---|---|
| IDNN | International Design News Network |
| IDNP | Iowa Digital Newspaper Project |
| IEC | International Electrotechnical Commission |
| IEN | Industrial Equipment News |
| IFN | Islamic Finance News |
| IFNC | Independently Funded News Consortia |
| IGF | Intermediaries Guarantee Facility |
| IGNITE | Instilling Good News Impacting the Earth |
| IHCD | I Have Crippling Depression |
| IHNFY | I Have News For You |
| IIMM | International Institute of Mass Media |
| IJB | Investigative Journalism Bureau |
| IJN | Intermountain Jewish News |
| ILN | Illustrated London News |
| IMF | Impossible Mission Force |
| IMID | Immune Mediated Inflammatory Disease |
| IMM | Inflight Media Marketing |
| IMNA | Independent Mon News Agency |
| INA | Integrated Newspaper Audience |
| INA | Iowa Newspaper Association |