Ohc

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