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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