OHC can refer to: Ocean heat content, the thermal energy held in the oceans Oetker Hotel Management GmbH, a German hotel management company also known as Oetker Collection Ohio Heritage Conference, a high school athletic league in Ohio, U.S. Ontario Health Coalition, an organization that advocates publicly funded health care in Ontario, Canada Open House Chicago, a festival in Chicago, Illinois, U.S. Outer hair cell, a component in the mammalian cochlear amplifier Overhead cam, a component in a particular location in an overhead camshaft engine See also Order of the Holy Cross (disambiguation)