HSL

HSL may refer to:

Companies
  • Heeling Sports Limited, which owns the Heelys and Soap Shoes brands
  • Hindustan Shipyard Limited in Visakhapatnam, India.
Science, technology and computing
  • HSL color space (hue, saturation, lightness)
  • High Speed Link in telephony
  • Homoserine lactone, a bacterial quorum sensing molecule
  • Hormone-sensitive lipase, a protein found in the cytosol of adipocytes important in the hydrolysis of triacylglycerols.
  • Harwell Subroutine Library, a library of FORTRAN Numerical Analysis Subroutines.
  • Health and Safety Laboratory, an agency of the Health and Safety Executive in the UK.
Transport
  • Hogesnelheidslijn, high-speed railway lines iin the Netherlands: HSL-Zuid, HSL-Oost
  • High Speed Line, high-speed railway lines in Belgium: HSL 1, HSL 2, HSL 3, HSL 4
  • Haslemere railway station in Haslemere, Surrey, England
  • Helsingin Seudun Liikenne, a public transport administration in Helsinki
Other
  • Hawaii State Library
  • Helicopter Anti-Submarine Squadron (Light), in the United States Navy
  • Hero of Socialist Labor, an honorary title and the highest degree of distinction for exceptional achievements in economy and culture in the Soviet Union.
  • Hamburg School of Logistics, now Kühne School of Logistics and Management, a German business school
  • Helsingin Shakkiliitto, a Finnish chess organization