HLS

HLS may refer to:

Organisations

• Harlington Locomotive Society, London, England
• HealthSouth, an American hospital operator
• Huntingdon Life Sciences, a British contract research organisation

Education

• Harvard Law School, Cambridge, Massachusetts, US
• Helen Lowry Higher Secondary School, Mizoram, India
• Highlands Latin School, Louisville, Kentucky, US

Technology

• HTTP Live Streaming, a media streaming communications protocol
• HLS color space, a representation of points in an RGB color model
• High-level synthesis, an automated design process

Other uses

• Hilsea railway station (station code), England
• Historical Dictionary of Switzerland (German: Historisches Lexikon der Schweiz)
• Homeland security
• St Helens Airport (IATA code), Tasmania