Eis or EIS may refer to:
Education Eastern Independent Schools of Melbourne, in Australia Educational Institute of Scotland, a trade union Ekamai International School, in Bangkok, Thailand English for Integrated Studies, a program in Thailand Escuela Internacional Sampedrana, a school in San Pedro Sula, Honduras Essence International School, in Kaduna, Nigeria European International School, in Parañaque City, Philippines European International School Ho Chi Minh City, in Vietnam
Government Enhanced Imaging System, an American satellite program Enterprise Investment Scheme, series of UK Tax reliefs Epidemic Intelligence Service, a program of the US Centers for Disease Control and Prevention
Health and medicine Emergency Infant Services, an American charity Estrogen insensitivity syndrome
People Egon Eis (1910–1994), Austrian screenwriter Frederick Eis (1843–1926), German-American Catholic bishop Maria Eis (1896–1954), Austrian actress Otto Eis (1903–1952), Austrian-American screenwriter
Science and technology Electrochemical impedance spectroscopy Electrolyte–insulator–semiconductor sensor Electronic image stabilization Embryo-carrying interstellar starship, a concept in space colonization Enterprise information system Eesti Internet SA, the operator of the .ee country code top-level domain of Estonia Europa Imaging System Evolving intelligent system Executive information system Extreme Ice Survey Extreme-ultraviolet Imaging Spectrometer, an instrument on board the Hinode satellite Effective Isotropic Sensitivity
Other uses Eis, alternative spelling of ais, Etruscan word meaning 'god' Eisbach (Rhine), a river in Germany Edmonton International Speedway, in Alberta, Canada English Institute of Sport, a network of sports related services Environmental impact statement, in the United States Expressive Intelligence Studio, a game design research group at University of California, Santa Cruz Terrance B. Lettsome International Airport, in the British Virgin Islands E♯ (musical note)