| HLS | Habtoor Leighton Specon 
| Others |
| HLS | Halt Line State
| Others |
| HLS | Hans Leo Senden
| Others |
| HLS | Hard Luck Story
| Others |
| HLS | Hardware Logic Synthesis
| Others |
| HLS | Harrington Limousine Service
| Others |
| HLS | Harvard Law School
| Others |
| HLS | Harvard Law School's
| Others |
| HLs | Head Lamps
| Others |
| HLS | Headlight Switch
| Others |
| HLS | Healthcare Linen Specialist
| Others |
| HLS | Healthcare Linen Specialists
| Others |
| HLS | Healthy Lifestyle Survey
| Others |
| HLS | Heavy Louisiana Sweet
| Others |
| HLS | Hefei Light Source
| Others |
| HLS | Helicopter landing site
| Others |
| HLS | Helpful Law Student
| Others |
| HLS | Her Ladyship
| Others |
| HLS | Heritage Landscape Services
| Others |
| HLS | Hessler Last Slot
| Others |
| HLS | High Level Service
| Others |
| HLS | High Level Syntax
| Others |
| HLS | High Level Synthesis
| Others |
| HLS | High Line Speed
| Others |
| HLS | High Line Super
| Others |
| HLS | High Low Strobe
| Others |
| HLS | High Luxury Sedan
| Others |
| HLS | Hills
| Others |
| HLS | Hippel-Lindau syndrome
| Others |
| HLS | His LordShip
| Others |
| HLS | Hispanic Linguistics Symposium
| Others |
| HLS | HMW Library System
| Others |
| HLS | Home Location Server
| Others |
| HLS | Hook, Line, and Sinker
| Others |
| HLS | HopeLess Score
| Others |
| HLS | Hospital Libraries Section
| Others |
| HLS | Hot Looks School
| Others |
| HLS | Household Livelihood Security
| Others |
| HLS | HTTP Live Streaming
| Others |
| HLS | Https Live Stream
| Others |
| HLS | Hue Lightness and Saturation
| Others |
| HLS | Hue Lightning Saturation
| Others |
| HLS | Hue, Luminance, Saturation
| Others |
| HLS | Hue-Lightness-Saturation
| Others |
| HLS | Human Landing System
| Others |
| HLS | Huntingdon Life Sciences
| Others |
| HLS | Huntington Locomotive Shop
| Others |
| HLS | Hydraulic Lift Suspension
| Others |
| HLS | Hydraulic Lift System
| Others |
| HLS | hyperlipidaemic serum
| Others |
| HLS | St. Helens, Tasmania, Australia
| Others |