HHHS

HHHS may refer to:


 * Lebanon
 * Houssam Hariri High School, in Sharhabil, Saida


 * Australia
 * Hunters Hill High School, in Sydney, New South Wales


 * South Africa
 * Hottentots Holland High School, in Western Cape


 * United States
 * Hasbrouck Heights High School in New Jersey
 * Haddon Heights High School, in New Jersey
 * Hamilton Heights High School, in Arcadia, Indiana
 * Hatboro-Horsham Senior High School, in Horsham, Pennsylvania
 * Hendrick Hudson High School in Montrose, New York
 * Heritage Hills High School, in Lincoln City, Indiana
 * Herbert Hoover High School (disambiguation)
 * Houston Heights High School, in Houston, Texas
 * Hunter Huss High School, in Gastonia, North Carolina