HTL may refer to:

• Language technology
• HTL Buses, a bus company based in Merseyside, England
• Bell HTL a light helicopter
• Halifax Tool Library, a tool-lending library in Nova Scotia, Canada
• Heritage Trust of Lincolnshire, in England
• High tension line, used for electric power transmission
• Histology technologist
• High Threshold Logic, an electronic logic technology
• Höhere Technische Lehranstalt, engineering-focused secondary schools in Austria
• Hydrothermal liquefaction, a thermochemical depolymerisation process
• Roscommon County – Blodgett Memorial Airport, in Michigan, United States

This disambiguation page lists articles associated with the title HTL.
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