| HCS | Hagny Closing System 
| Others |
| HCS | Hajdu-Cheney syndrome
| Others |
| HCS | Halal Certification Services
| Others |
| HCS | Halo Championship Series
| Others |
| HCS | Hamilton County Schools
| Others |
| HCS | Hampshire Country School
| Others |
| HCS | Hampton City Schools
| Others |
| HCS | Hand Cut Sleeve
| Others |
| HCS | Haraghe Catholic Secretariate
| Others |
| HCS | Hardin County Schools
| Others |
| HCS | Harman Connected Services
| Others |
| HCS | Harmonic Component System
| Others |
| HCS | Harry Clayton Stutz
| Others |
| HCS | Harvard Computer Society
| Others |
| HCS | Haryana Civil Services
| Others |
| HCS | HashiCorp Consul Service
| Others |
| HCS | Hate Caseih Severly
| Others |
| HCs | Hazard Controls
| Others |
| HCS | Header Check Sequence
| Others |
| HCS | Headlamp Cleaning System
| Others |
| HCS | Health and Community Services
| Others |
| HCS | Health Care Software
| Others |
| HCS | Health Care Surrogate
| Others |
| HCS | Health Care System
| Others |
| HCS | Health Commerce System
| Others |
| HCS | Health Commissioning Services
| Others |
| HCS | Healthcare Cost Solutions
| Others |
| HCS | Heated and Climate Controlled Seat System
| Others |
| HCS | Height Control System
| Others |
| HCS | Helicopter Combat Support (Navy)
| Others |
| HCS | Helicopter Coordination Section
| Others |
| HCS | Hellenic Cardiological Society
| Others |
| HCS | Heritage Christian School
| Others |
| HCS | Hermit Crab Sponge
| Others |
| HCS | Herp Care Software
| Others |
| HCS | Hfd Control Stream
| Others |
| HCS | High Calorie Squid
| Others |
| HCS | High Carbon Stock
| Others |
| HCS | High Color Saturation
| Others |
| HCS | High Compression Swirl
| Others |
| HCS | High Content Screening
| Others |
| HCS | High Creative Students
| Others |
| HCS | Highlands Community Services
| Others |
| HCS | Highway Capacity Software
| Others |
| HCS | Hijet Club Sumenep
| Others |
| HCS | Hill Climbing Search
| Others |
| HCS | Hilliard City Schools
| Others |
| HCS | Historical Computing Society
| Others |
| HCS | Hoke County Schools
| Others |
| HCS | Holiday Care Service
| Others |
| HCS | Hollow Conjugated Siliconized
| Others |
| HCS | Home and Community Services
| Others |
| HCS | Home Cinema System
| Others |
| HCS | Home Control System
| Others |
| HCS | Honda Club Serbia
| Others |
| HCS | Hope Community Services
| Others |
| HCS | Horry County Schools
| Others |
| HCS | Horticulture and Crop Science
| Others |
| HCS | Hospice Community Services
| Others |
| HCS | Hosted Collaboration Solution
| Others |
| HCS | Hot-Carrier Suppressed
| Others |
| HCS | Hotrod Custom Show
| Others |
| HCS | Housing Counseling Services
| Others |
| HCS | Hull Collegiate School
| Others |
| HCS | Human Capital Solutions
| Others |
| HCS | Human Capital Strategist
| Others |
| HCS | Human Chorionic Somatomammotropin
| Others |
| HCS | Human Chorionic Somatotropin
| Others |
| HCS | Human Cord Serum
| Others |
| HCS | Humanities Computer Science
| Others |
| HCS | HUMINT control system
| Others |
| HCS | Hummocky Cross Stratification
| Others |
| HCS | Huntsville City Schools
| Others |
| HCS | Hybrid Capture system
| Others |
| HCS | Hybrid Cloud Security
| Others |
| HCS | Hybrid Computer System
| Others |
| HCS | Hydro Cracking System
| Others |
| HCS | Hydrocarbons
| Others |
| HCS | hypercoagulable state
| Others |