SNI

SNI may refer to:

Science and technology

 * Substitution nucleophilic internal, a chemistry reaction mechanism
 * Swedish Standard Industrial Classification, a Swedish economic classification system
 * Server Name Indication, an extension to the TLS computer networking protocol

Companies

 * Scripps Networks Interactive, a media company
 * Showtime Networks Inc., an American cable network company
 * Siemens Nixdorf Informationssysteme, a former computer hardware company
 * Société Nationale d'Investissement, a Moroccan conglomerate
 * Sports Network Incorporated, a former American media company

Organizations

 * National Information Service (Brazil), or Serviço Nacional de Informações, the former name of the Brazilian Intelligence Agency
 * Shelter Now International, a Christian foreign aid organization, based in Germany and historically focused on Pakistan and Afghanistan
 * Sistema Nacional de Investigadores, a Mexican government agency
 * Soviet Naval Infantry
 * Swiss Nanoscience Institute

Other uses

 * Standar Nasional Indonesia (Indonesian National Standard), formulated by the National Standardization Agency