HCS

HCS may refer to:

Education

 * Various countries
 * Heritage Christian School (disambiguation)
 * Holy Cross School (disambiguation)


 * Australia
 * Hallett Cove School, in Adelaide, South Australia
 * Heritage College Sydney, in New South Wales


 * India
 * Hooghly Collegiate School, in West Bengal


 * United Kingdom
 * Hereford Cathedral School, in England
 * Hull Collegiate School, in England


 * United States
 * Hackensack Christian School, in New Jersey
 * Hampshire Country School, in New Hampshire
 * Hampton Christian Schools, in Virginia
 * Hardin County Schools, in Kentucky
 * Harrisburg Christian School, in Pennsylvania
 * Hawkins County Schools in Tennessee
 * Highland Catholic School, in Minnesota
 * Hilltop Christian School, in North Carolina
 * Hinsdale Central School, in New York
 * Holland Christian Schools, in Michigan
 * Horry County Schools, in South Carolina

Biology and medicine

 * Hajdu–Cheney syndrome
 * High-content screening
 * Human chorionic somatomammotropin
 * Hydrocortisone

Science and mathematics

 * HCS clustering algorithm
 * Heliospheric current sheet
 * Hierarchical constraint satisfaction
 * Hummocky cross-stratification

Technology

 * Hard-clad silica optical fiber
 * Header check sequence
 * Hierarchical cell structure (telecommunications)
 * Hub-center steering

Other uses

 * Halifax Choral Society
 * Halo Championship Series
 * Harlem Children Society
 * High Council of State (disambiguation)
 * The Histochemical Society
 * Hollywood Center Studios
 * Honoris Crux Silver, a military decoration of South Africa
 * Honourable Company's Service or Honourable Company's Ship, used to prefix the names of East India Company ships
 * HUMINT Control System, an aspect of the Sensitive compartmented information protocol
 * Hyderabad Civil Service, India