HSL may refer to:

Science, technology and computing

* HSL (Fortran library), a numerical software library * HSL and HSV color space * Health and Safety Laboratory, UK *

Hormone-sensitive lipase Hormone-sensitive lipase (, HSL), also previously known as cholesteryl ester hydrolase (CEH), sometimes referred to as triacylglycerol lipase, is an enzyme that, in humans, is encoded by the ''LIPE'' gene, and catalyzes the following reaction: ...

, a protein * Hybrid solar lighting

Transport

Bell HSL The Bell HSL (Model 61) was an American 1950s anti-submarine warfare (ASW) helicopter built by the Bell Helicopter company, the only tandem rotors, tandem rotor type designed by Bell. It had its first flight in 1953 and entered service with the U.S ...

, a 1950s U.S. Navy antisubmarine helicopter *

Haslemere railway station Haslemere railway station is on the Portsmouth Direct Line, serving the town of Haslemere, Surrey, England. It is down the line from , measured via Woking. History The large car park (to the south) and industrial estate (to the north) were or ...

in England *

Helsinki Regional Transport Authority The Helsinki Regional Transport Authority (; ) is the inter-municipal authority that maintains the public transportation network of the nine municipalities of Greater Helsinki, Finland. HSL oversees the operation of all of Helsinki's public ...

(''Helsingin seudun liikenne''), Finland *

Hindustan Shipyard Hindustan Shipyard Limited (HSL) is a public sector undertaking shipyard located in Visakhapatnam, on the east coast of India. HSL is a major shipyard in India, with a capacity to manufacture vessels up to 80,000 deadweight tonnage (DWT). The s ...

, in Visakhapatnam, Andhra Pradesh, India * Hispania Líneas Aéreas, a defunct Spanish airline * HSL Logistik, a German train operator * Huslia Airport, in Alaska, US * High-speed rail lines in Benelux

HSL 1 The HSL 1 (, ) is a high-speed rail line which connects Brussels, Belgium, with the LGV Nord at the Belgium–France border. It is long with of dedicated high-speed tracks and of modernised lines. Service began on 14 December 1997. The line h ...

HSL 2 The HSL 2 (, ) is a Belgian high-speed rail line between Leuven and Ans (near Liège) and is long, all of it on dedicated high-speed tracks, which began service on 15 December 2002. As part of the Belgian railway network, it is owned, technic ...

HSL 3 The HSL 3 (, , ) is a Belgian high-speed rail line. It connects Liège to the German border near Aachen. The high-speed track length is . The line was technically completed in October 2007; however, it did not come into operation until 14 June ...

HSL 4 The HSL 4 (, ) is a Belgian high-speed rail line part of the axis which connects Antwerp to the Dutch border. It is ; of it being dedicated high speed tracks. It was scheduled for completion by 2005 and opened in 2009. Together with the HS ...

, and

HSL-Zuid The HSL-Zuid (, ), is a 125 kilometre-long (78 mile) High-speed rail in the Netherlands, Dutch high-speed rail line running between the Amsterdam metropolitan area and the Belgium–Netherlands border, Belgian border, with a branch to Breda, ...

* HSL-34 to HSL-94: Former US Navy helicopter Anti-submarine (Light) squadrons

Other uses

Hausa Sign Language Hausa Sign Language (HSL; or ) is the indigenous sign language of the Deaf community Deafness has varying definitions in cultural and medical contexts. In medical contexts, the meaning of deafness is hearing loss that precludes a person from ...

, Kano, Nigeria *

Hawaiʻi Sign Language Hawaiʻi Sign Language or Hawaiian Sign Language (HSL; Hawaiian: ''Hoailona ʻŌlelo o Hawaiʻi''), also known as Hoailona ʻŌlelo, Old Hawaiʻi Sign Language and Hawaiʻi Pidgin Sign Language, is an indigenous sign language native to Hawaiʻ ...

, Hawaii, United States * Hamburg School of Logistics, now

Kühne Logistics University Kuehne Logistics University (KLU) is a private business school based in Hamburg, Germany. It was founded by the Kuehne Foundation of German billionaire Klaus-Michael Kühne, based in Schindellegi, Switzerland. KLU offers bachelor's degrees and fou ...

, Germany *Staff Selection Commission Combined Higher Secondary Level Exam or CHSL/HSL, civil service examination by the

Staff Selection Commission Staff Selection Commission (SSC) is an organisation under the Government of India to recruit staff for various posts in the various ministries and departments of the government of India and in subordinate offices and agencies. This commission ...

for governmental posts in India {{disambiguation