ICM
- Chartered Institute of Credit Management
- IBIS Interconnect Modeling Specification
- ICM Partners
- ICM Registry
- ICM Research
- Idealized cognitive model
- Image Color Management
- Improved conventional munition
- Independent Chip Model
- Independent Citizens Movement
- Indian classical music
- Inner cell mass
- Insertable cardiac monitor
- Institut du Cerveau
- Institute of Commercial Management
- Integrated catchment management
- Integrated coastal management
- Intelligence Commendation Medal
- Intensive care medicine
- Intentional camera movement
- Intercontinental ballistic missile
- Interdisciplinary Centre for Mathematical and Computational Modelling
- Intergovernmental Committee for Migration
- Interim Control Module
- Internal Coordinate Mechanics
- International Confederation of Midwives
- International Congress of Mathematicians
- Internationales Congress Center München
- Intracluster medium
- Iodinated contrast medium
- Iraq Campaign Medal
- Irish Church Missions
- Ischemic cardiomyopathy
- Islamic Center of Murfreesboro
- Iterated conditional modes
- Missionary Sisters of the Immaculate Heart of Mary
- NS Intercity Materieel
- Scanning ion-conductance microscopy