NCI can stand for: Non-controlling interest (Minority interest), in accounting, minority ownership in a subsidiary corporation National Cancer Institute, American medical research agency National Captioning Institute, American non-profit organization providing captioning for film and TV National Computational Infrastructure National Facility (Australia), Australia’s national research computing service National College of Ireland, college in Dublin, Ireland Native Communications, Inc., Aboriginal public broadcasting service in Manitoba, Canada National Coastwatch Institution, UK voluntary coastwatch organisation North Coast Institute of TAFE, university system in New South Wales, Australia Negative chemical ionization, chemical technique used in mass spectrometry Noarlunga Centre railway station, a railway station in Adelaide, Australia nCi, abbreviation for nanocurie, a unit of radioactivity Noi con l'Italia ("Us with Italy"), an Italian political party Nuclear Cities Initiative