HTL or htl may refer to

• Höhere Technische Lehranstalt, technology and crafts-oriented higher colleges in Austria
• HTL Buses, a bus company based in Merseyside, England
• Hexaware Technologies, an information technology company based in Mumbai, India
• Roscommon County – Blodgett Memorial Airport (IATA code HTL), an airport in Roscommon County, Michigan, United States
• Histology technologist, a technologist that performs the preparation of histological sections
• High Threshold Logic, a special variant of DTL used in noisy applications.
• Heritage Trusts of Lincolnshire, a charity preserving historic sites and buildings in the east of England.
• HTL Group, a provider of IT Support Services to Businesses in London.

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