HC, hc or H/C may refer to:

Science, technology, and mathematics

Medicine

  • Health Canada
  • Hemicrania continua
  • Hyperelastosis cutis or hereditary equine regional dermal asthenia

Chemistry

  • Hemocyanin, a metalloprotein abbreviated Hc
  • HC smoke, a US military designation for Hexachloroethane
  • Homocapsaicin, a capsaicinoid
  • Hydrocarbon, a category of substances consisting only of hydrogen and carbon

Other uses in science, technology, and mathematics

  • 74HC-series integrated circuits, a logic family of integrated circuits
  • Felix HC, a series of Romanian personal microcomputers produced by ICE Felix Bucharest and which were ZX Spectrum clones
  • Hemianthus callitrichoides, a freshwater aquatic plant native to Cuba
  • + h.c., a notation used in mathematics and quantum physics

Sports

  • Head Coach
  • Hors catégorie (French), used in cycle races to designate a climb that is "beyond categorization"
  • UCI .HC road cycling races (1.HC and 2.HC), the second tier of events in the sport, after the UCI World Tour

Other uses

  • Heritage Corridor, a Metra commuter rail line running from Chicago to Joliet, Illinois
  • Highway contract route, an outsourced United States Postal Service delivery method, formerly known as Star routes
  • Honorary degree, or honoris causa
  • Hors de commerce, prints similar to Artist Proofs except they are only available through the artist directly
  • Hospitality Club, an internet-based hospitality service
  • Houston Chronicle, newspaper of record of Houston, Texas<!--See source: http://web.archive.org/web/20180818001309/https://www.chron.com/news/education/article/Houston-ISD-middle-school-draws-criticism-online-13164383.php-->
  • Aero-Tropics Air Services (IATA airline designator HC)
  • Disability, acronym for Handicap/Handicapped
  • High-cube container, a type of intermodal shipping container