IHM or Ihm may refer to: Organizations Sisters of the Immaculate Heart of Mary, a Catholic religious order founded in 1848 Sisters, Servants of the Immaculate Heart of Mary, US Catholic religious order founded in 1842 Institute of Healthcare Management, former name of Institute of Health and Social Care Management, a UK professional organisation Institute of Hotel Management, a multi-location India-based hospitality management school People with the name Joe Ihm (1889–1951), a member of the Missouri House of Representatives Jisoon Ihm (born 1951), a South Korean physicist and professor in the School of Physics at Seoul National University See also Ihm House (disambiguation) Institute of Hotel Management (disambiguation)