IHC may refer to:
Medicine Immunohistochemistry Intrahepatic cholestasis
Science and technology Indirectly Heated Cathode, a type of hot cathode used in vacuum electronics tubes Intelligent Home Control, home automation and control system FAT IHC OEM label, a Windows 9x signature in OEM labels of FAT volumes
Transport Inhaca Airport, Mozambique (by IATA code)
Organisations IHC New Zealand, a national organisation for the support of intellectually disabled persons Immigration Holding Centres, Canadian immigration detention facilities India Habitat Centre Interagency Hotshot Crew, a Type 1 handcrew of wildland firefighters Interchurch Holiness Convention, an ecumenical organization of Wesleyan-Arminian denominations Intermountain Healthcare, a healthcare network in Utah, United States International Harvester Corporation International Humanitarian City International Hat Company Islamabad High Court, a court in Islamabad, Pakistan
Other IHC (), a Christogram Institute for Human Continuity, a viral marketing campaign for the film 2012