| HDC | Hackers Death Clan 
| Others |
| HDC | Hackers Dot Com
| Others |
| HDC | Half Dead Clan
| Others |
| HDC | Half Double Crochet
| Others |
| HDC | Hand Drive Control
| Others |
| HDC | Handle for Device Context
| Others |
| HDC | Handle to a Device Context
| Others |
| HDC | Handle to Device Context
| Others |
| HDC | Handle-to-Device Context
| Others |
| HDC | Harbor Defense Commander
| Others |
| HDC | Hard Disk Controller
| Others |
| HDC | Hard Disk Crusher
| Others |
| HDC | Hard Drive Controller
| Others |
| HDC | Hardware Data Compression
| Others |
| HDC | Harley-Davidson Club
| Others |
| HDC | Harvard Depository Collection
| Others |
| HDC | Hasselblad Data Camera
| Others |
| HDC | Hawaii Drivers Club
| Others |
| HDC | Hawkins Development Company
| Others |
| HDC | Headquarters of Dastardly Criminals
| Others |
| HDC | Healey Drivers Club
| Others |
| HDC | Health Data Consortium
| Others |
| HDC | Heartland Developer Conference
| Others |
| HDC | Heartland Developers Conference
| Others |
| HDC | Heavy Duty Chassis
| Others |
| HDC | Heavy Duty Clutch
| Others |
| HDC | Heavy Duty Compact
| Others |
| HDC | Heavy duty connectors
| Others |
| HDC | Heavy Duty Coolant
| Others |
| HDC | Heavy Duty Cooling System
| Others |
| HDC | Heavy Duty Emission Cycle
| Others |
| HDC | Hebrew Discovery Center
| Others |
| HDC | Helicopter Direction Center
| Others |
| HDC | Help Desk Central
| Others |
| HDC | Hendon Data Centre
| Others |
| HDC | Heritage Distilling Co
| Others |
| HDC | Hexamethylene Diamine Carbamate
| Others |
| HDC | Hierarchical Domain Controller
| Others |
| HDC | High Danger Chances
| Others |
| HDC | High Defence Committee
| Committee, Military, Defence |
| HDC | High Definition Camera
| Others |
| HDC | High Definition CODEC (CODer-DECoder)
| Others |
| HDC | High density color
| Others |
| HDC | High Density Connector
| Others |
| HDC | High Density Core
| Others |
| HDC | High Density Distribution Chassis
| Others |
| HDC | High Dependability Computing
| Others |
| HDC | High Desert Church
| Others |
| HDC | High Desert Crawlers
| Others |
| HDC | High Dose Chemotherapy
| Others |
| HDC | High-Dose Chemotherapy
| Others |
| HDC | Higher Diploma in Commerce
| Others |
| HDC | Highway Driving Cycle
| Others |
| HDC | Hill Decent Control
| Others |
| HDC | Hill Descent Control
| Hardware, Transport |
| HDC | Historic District Commission
| Others |
| HDC | Historic District Council
| Others |
| HDC | Historic Districts Commission
| Others |
| HDC | Historic Districts Council
| Others |
| HDC | Holder in Due Course
| Others |
| HDC | Home Detention Curfew
| Others |
| HDC | Honda Dream Cup
| Others |
| HDC | Hordas Do Caos
| Others |
| HDC | Hospital Dialysis Center
| Others |
| HDC | Hotel Development Council
| Others |
| HDC | Housing Design Center
| Others |
| HDC | Housing Development Center
| Others |
| HDC | Housing Development Consortium
| Others |
| HDC | Housing Development Corp
| Others |
| HDC | Housing Development Corporation
| Others |
| HDC | Houston Development Co
| Others |
| HDC | Huawei Developer Conference
| Others |
| HDC | Hudson- Delaware Chapter of the Society of Environmental Toxicology and Chemistry
| Others |
| HDC | Human Development Center
| Others |
| HDC | Human Development Commission
| Others |
| HDC | Human Dignity Curriculum
| Others |
| HDC | Hutch Data Commonwealth
| Others |
| HDC | Hybrid Device Controller
| Others |
| HDC | Hyderabad Development Center
| Others |
| HDC | Hyderabad Development Center (Microsoft)
| Others |
| HDC | Hydroelectric Design Center
| Others |
| HDC | Hyundai California Design Centre
| Others |
| HDC | Hyundai Development Company
| Others |
| HDC | in-House Developed Driving Cycle
| Others |