NHHS

NHHS may refer to:


 * Nan Hua High School - Singapore
 * New Hanover High School - Wilmington, North Carolina
 * New Hope High School - New Hope, Alabama
 * New Hope High School - Columbus, Mississippi
 * New Horizons High School - Delta Junction, Alaska
 * Newport Harbor High School - Newport Beach, California
 * North Hall High School - Hall County, Georgia
 * North Hardin High School - Radcliff, Kentucky
 * North Harford High School - Pylesville, Maryland
 * New Haven High School (disambiguation) - multiple schools
 * North Hollywood High School - North Hollywood, California
 * North Hunterdon High School - Annandale, New Jersey
 * North Hagerstown High School - Hagerstown, Maryland
 * The proposed New Haven-Hartford-Springfield Commuter Rail Line, scheduled to be constructed along the Amtrak New Haven-Springfield Line.
 * Student Union of the Norwegian School of Economics and Business Administration