HSL

HSL may refer to:

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

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