HSD

HSD may refer to:

School districts

 * Hackett School District, in Arkansas, United States
 * Harrison School District (disambiguation)
 * Hazelwood School District, in Missouri, United States
 * Hillsboro School District in Oregon, United States

Other uses

 * Hamstead railway station, England
 * Hardanger Sunnhordlandske Dampskipsselskap, a former Norwegian transport company
 * Heliophysics Science Division, a branch of the United States National Atmospheric and Space Administration
 * High School Diploma
 * High Speed Diesel, a diesel engine that has rated speed more than 900 RPM
 * Historical Society of Delaware
 * Hollywood Stunt Driver, a live show at Warner Bros. Movie World
 * Homeland Security Department
 * Hybrid Synergy Drive, a set of hybrid car technologies
 * Hydroxysteroid dehydrogenase
 * Hypoactive sexual desire, a disorder characterized as a lack or absence of sexual fantasies and desire for sexual activity
 * Hypermobility spectrum disorder
 * Tukey's honest significant difference test