HS
# HS

HS or Hs can stand for:

## Businesses and brands

* HS Produkt, a Croatian firearms manufacturer
* Helsingin Sanomat, a newspaper in Finland
* Hawker Siddeley, aircraft manufacturing group
* Henschel & Son, in aircraft prefixes; e.g., Hs 117
* Head & Shoulders or H&S, a shampoo brand
* Harris Scarfe and HS Home, a chain of Australian department stores

## Science and technology

### Chemistry

* Hassium, symbol Hs, a chemical element
* Bisulfide, $HS^−,$ a chemical compound derived from $H_2S$
* Mercapto radical, $HS^•,$ a radical molecule
* Hun stuff (a World War I name for mustard gas)

### Medicine

* hs, medical abbreviation for "hours of sleep"
* h.s., medical abbreviation for the Latin phrase hora somni ("at bedtime")
* Hereditary spherocytosis, a genetic disorder marked by hemolytic anemia
* Hidradenitis suppurativa, a skin condition affecting apocrine sweat glands and hair follicles

### Other uses in science and technology

* '.hs', the Haskell programming language's typical filename extension
* Heat sink
* Higman–Sims group, in mathematics
* Hypothetical syllogism, a proof rule in classical logic
* Horizon scanning, a method from futures studies

## Vehicles

* Curtiss HS, an American patrol flying boat
* Lexus HS, a Japanese compact hybrid sedan
* MG HS, a Chinese-British compact SUV
* YTHS HS, a Chinese unmanned aerial vehicle series

## Other uses

* Harlem Spartans, a British hip hop collective
* Harmonized System, the Harmonized Commodity Description and Coding System of tariff nomenclature
* Sestertius, an ancient Roman coin
* High school (secondary education)
* Solar Hijri calendar (= Hijri Shamsi)
* Holy Spirit
* HS postcode area, covering the Outer Hebrides, Scotland
* SS-Heimatschutz Slowakei (HS), a German paramilitary group in Slovakia during World War II
* Thailand (aircraft registration prefix HS)
