FHS

FHS may refer to:

United States

 * Falmouth High School, Maine
 * Farmington High School, Utah
 * Fife High School, Fife, Washington
 * Firestone High School, Akron, Ohio
 * Flushing High School, Queens, New York
 * Forks High School, Washington
 * Framingham High School, Massachusetts
 * Franklin High School, several schools
 * Frenship High School, Wolfforth, Texas
 * Frontier High School, Bakersfield, California
 * Frontier High School, New Matamoras, Ohio

Canada

 * Frank Hurt Secondary School, Surrey, British Columbia
 * Fredericton High School, New Brunswick

Health and medicine

 * Feline hyperesthesia syndrome
 * Fetal hydantoin syndrome
 * Floating–Harbor syndrome

Other uses

 * Fellow of the Horticultural Society
 * Filesystem Hierarchy Standard
 * Hasselt railway station, in Belgium
 * Front handspring
 * Frankfurter Hauptschule