KNHS may refer to:
Koninklijke Nederlandsche Hoogovens en Staalfabrieken, Netherlands based steelmaker Keystone National High School KNHS-LP, a low-power radio station (93.1 FM) licensed to serve Lafayette, Louisiana, United States KNHS (California), a former high school radio station in Torrance, California, United States; a defunct radio station Kingsgrove North High School, a high school in Sydney, Australia (KNHS), Dutch National Equestrian Federation