HCI

HCI may refer to:

Computing

 * Happy Computers, an American computer hardware manufacturer
 * Home Computer Initiative, a United Kingdom government programme to increase computers usage
 * Host controller interface (disambiguation), various computer interfaces
 * Human–computer interaction, the study of how people interact with computers
 * Human-computer interaction (security), the study of how people interact with computers concerning information security
 * Hyper-converged infrastructure, an IT infrastructure framework for integrating storage, networking and virtualization computing in a data center.

Education

 * Harbord Collegiate Institute, a school in Toronto, Canada
 * Humberside Collegiate Institute, a school in Toronto, Canada
 * Hwa Chong Institution, a school in Singapore

Science

 * Highly charged ion
 * Hot carriers injection, in solid-state electronic devices
 * Hydrocarbon indicator, in reflection seismology

Organizations

 * Handgun Control, Inc., the former name of the Brady Campaign to Prevent Gun Violence
 * Harrisburg City Islanders, a soccer club from the United States
 * HCI Books (Health Communications Inc), an American publishing house, see What the Bleep Do We Know!?
 * Human Concern International, a Canadian relief and development organization
 * Huntsman Cancer Institute, an American cancer research facility and hospital

Other uses

 * Heavy-Chemical Industry Drive, a former economic development plan of South Korea