•
Irish Church Missions, an Anglican mission •
Institut du Cerveau, the Paris Brain Institute, a research center •
Interdisciplinary Centre for Mathematical and Computational Modelling, University of Warsaw •
International Confederation of Midwives •
ICM Partners, a former talent and literary agency, originally International Creative Management •
ICM Research, a UK polling company, originally Independent Communications and Marketing •
ICM Registry, the company that sponsors the .xxx Internet top-level domain for adult entertainment •
Independent Citizens Movement, a United States Virgin Islands party •
Chartered Institute of Credit Management, a UK-based professional Institute, formerly the Institute of Credit Management •
Institute of Commercial Management a UK-based body for commercial and business development managers •
Intergovernmental Committee for Migration, a former name of the UN International Organization for Migration •
Islamic Center of Murfreesboro, Tennessee, US •
Missionary Sisters of the Immaculate Heart of Mary, a Roman Catholic religious institute of pontifical right of women, shortened as "I.C.M." ==Science and technology==