HNC Views 14 meanings found HNC can refer to the popular Honey Nut Cheerios cereal, a medical abbreviation for cancers of the head and neck, or a vocational Higher National Certificate qualification in the UK. Medical Head and Neck Cancer Miscellaneous Hazel Nuts Chocolate Hellenic National Corpus Horribly Naughty Children Honey Nut Cheerios International Hermandad Nacional de Combatientes Academic & Science Higher National Certificate Hierarchical Network of Concepts Regional Heure Normale du Centre Computing CNC program files Heidenhain (?) dialog Internet Hogwarts Net Central Business Hot New Company Holistic Nurse Certified Hard Creek Nickel Corporation