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