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
See also HCL (disambiguation) HCIL (disambiguation) HCl (H-C-lowercase L), chemical formula of Hydrogen chloride