| Abbreviation | Definition |
|---|---|
| IARS | Indian Association for Reliability and Statistics |
| ICARS | Interagency Council on Agricultural and Rural Statistics |
| ICASS | International Conference in Actuarial Science and Statistics |
| ICD11 | International Statistical Classification of Diseases 11 |
| ICMSF | International Conference on Mathematical and Statistical Finance |
| ICO | Initial Coin Offerings |
| IDS | International Debt Statistics |
| IFS | International Financial Statistics |
| IGSP | Intercollegiate Graduate Statistics Program |
| ILMS | International Labour Migration Statistics |
| IMASS | International Mortality And Smoking Statistics |
| IMS | Institute of Mathematical Statistics |
| IMSF | International Maritime Statistics Forum |
| IMSIE | Institute for Medical Statistics Informatics and Epidemiology |
| IMTSS | International Merchandise Trade Statistics Section |
| IRES | International Recommendations for Energy Statistics |
| IRTS | International Recommendations for Tourism Statistics |
| IRWS | International Recommendations for Water Statistics |
| IRWS | International Recommendations on Water Statistics |
| ISBS | International Society for Biopharmaceutical Statistics |