HEC or Hec may refer to:
Businesses and organizations Hautes Études Commerciales (disambiguation), French-language business schools Higher Education Commission (disambiguation) Hongkong Electric Company Hotel Ezra Cornell, a student-run hospitality leadership conference Hydro Tasmania (formerly Hydro-Electric Commission) Hyundai Engineering (HEC), a Korean firm founded in 1974
Science, technology and mathematics Computing and communications Hollerith Electronic Computer, Britain's first mass-produced business computer Header Error Control, a method used in some telecommunication protocols HDMI Ethernet Channel, an audiovisual technology
Medicine HEC syndrome, a condition Human equivalent concentration Hyperinsulinemic euglycemic clamp, a test of insulin resistance
Other uses in science and mathematics Habitable Exoplanets Catalog, in astronomy Hyperelliptic curve, in algebraic geometry Hydroxyethyl cellulose, a thickening agent HEC meeting, the Heart of Europe Bio-Crystallography Meeting
Other uses The title character of Hec Ramsey, a television Western (1972–1974) Heckington railway station, England; National Rail station code HEC
People Sportspeople Hec Crighton (fl. 1952–1986), Canadian gridiron football coach Hec Cyre (1901–1971), Canadian gridiron football player Hec Davidson (1908–1976), Australian-rules footballer Hector Dyer (1910-1990), American sprinter Hec Edmundson (1886–1964), American basketball coach Hec Fowler (1892–1987), Canadian ice hockey player Art Garvey (1900-1973), American gridiron football player Hec Gervais (1934–1997), Canadian curler Hec Highton (1923–1985), Canadian National Hockey League (NHL) ice hockey player Hector Hogan (1931-1960), Australian sprinter Hec Kilrea (1907–1969), Canadian NHL ice hockey player Hec Lalande (1934–2010), Canadian NHL ice hockey player Hector Lépine (1897-1951), Canadian NHL ice hockey player Hec McKay (fl. 1904–1935), Australian-rules footballer Hec Oakley (1909–1998), Australian cricketer Hector Pothier (born 1954), Canadian gridiron footballer Hec Yeomans (1895-1968), Australian-rules footballer
Other people Hec Clouthier (born 1949), Canadian politician Hector Waller (1900-1942), Australian naval officer