| (HC) | Head Circumference 
| Others |
| h.c. | honoris causa (honorary)
| Others |
| h/c | handcrafted
| Others |
| h/c | hardcover
| Others |
| HC | Hacking Chumps
| Others |
| HC | Haematopoietic Cell
| Others |
| HC | haemochromatosis
| Others |
| HC | Hair Color
| Others |
| HC | Hair Composition
| Others |
| HC | Hair Cuticle
| Others |
| HC | HairCut
| Others |
| HC | Hairy Cell
| Others |
| HC | Half Circle
| Others |
| HC | half yearly closing
| Others |
| HC | Hameldon Cross
| Others |
| HC | Hand Controller
| Others |
| HC | handicapped
| Others |
| HC | Handicapped Construction
| Others |
| HC | Handler Compiler
| Others |
| HC | Happy City
| Others |
| HC | Happy Couple
| Others |
| HC | Hard Charger
| Others |
| HC | Hard Condition
| Others |
| HC | Hard Copy
| Others |
| HC | Hard Core
| Others |
| HC | Hard Cover
| Others |
| HC | Hardin County
| Others |
| HC | Hardware Configuration
| Others |
| HC | Harish Chandra, mathematician
| Others |
| HC | Harris County
| Others |
| HC | Hater County
| Others |
| HC | Hawick Callants club
| Others |
| HC | Hayden Christensen, actor
| Others |
| HC | Hazardous Code
| Others |
| HC | Head Cashier
| Others |
| HC | Head Circumference
| Others |
| HC | Head Coach
| Others |
| HC | Head Commander
| Others |
| HC | Head Constable
| Others |
| HC | Head Contractor
| Others |
| HC | Head Count
| Others |
| HC | Headache Cure
| Others |
| HC | Headphone Coupling
| Others |
| HC | Health Canada
| Others |
| HC | Health Care
| Others |
| HC | Health Centre
| Others |
| HC | Health Circular
| Others |
| HC | Health Costs
| Others |
| HC | Health-Care
| Others |
| Hc | Healthcare
| Others |
| HC | Healthcare Commission; HCC is generally preferred
| Others |
| HC | Healthy Children
| Others |
| HC | Healthy Choice
| Others |
| HC | Healthy Control
| Others |
| HC | Healthy Controls
| Others |
| HC | Heat Chamber
| Others |
| HC | Heating coil
| Others |
| HC | Heating Controller
| Others |
| HC | Heavenly Chip
| Others |
| HC | Heavy Chain
| Others |
| HC | Heckel Crest
| Others |
| HC | Help Chat
| Others |
| HC | Help Contents
| Others |
| HC | Helper Cell
| Others |
| HC | Hemicrania Continua
| Others |
| HC | Hemocult
| Others |
| HC | Henry Clay
| Others |
| HC | Heparin Cofactor
| Others |
| HC | hepatitis C
| Others |
| HC | hepatocellular
| Others |
| HC | Hermitian Conjugate
| Others |
| HC | Heroic Challenger
| Others |
| HC | Heroic Corner
| Others |
| HC | Heteroclinic Connection
| Others |
| HC | Hickman catheter
| Others |
| HC | Hidden Conclusion
| Others |
| HC | High Capacity
| Others |
| HC | High Carbon
| Others |
| HC | High Chair
| Others |
| HC | High Chroma
| Others |
| HC | High Class
| Others |
| HC | High Clearance
| Others |
| HC | High Color
| Others |
| HC | High Complexity
| Others |
| HC | High Compression
| Others |
| HC | High Contraction
| Others |
| HC | High Contrast
| Others |
| HC | High Council
| Others |
| HC | High Counciler
| Others |
| HC | High Court
| Civic Administration, Legal |
| HC | High Credit
| Others |
| HC | High Cube
| Others |
| HC | High Cube (shipping container)
| Others |
| HC | High Current
| Others |
| HC | High Cut
| Others |
| HC | Highlands Church
| Others |
| HC | Highlight Color
| Others |
| HC | Highly Commended
| Others |
| HC | Highway Contract
| Others |
| HC | Hill Country
| Others |
| HC | Himbo Crab
| Others |
| HC | histochemistry
| Others |
| HC | Histoplasma capsulatum
| Others |
| HC | Historic Churches
| Others |
| HC | Historic Color
| Others |
| HC | Historical Color
| Others |
| HC | Historical Colors
| Others |
| HC | History Channel
| Others |
| HC | Hitachi Chemical
| Others |
| HC | Hockey Canada
| Others |
| HC | Hockey Club
| Others |
| HC | Holding Cell
| Others |
| HC | Holland Chapter
| Others |
| HC | Hollow Core
| Others |
| HC | Holstein Central
| Others |
| HC | Holy Communion
| Others |
| HC | Holy Cow
| Others |
| HC | Holy Crap!
| Others |
| HC | Holy Cross
| Others |
| HC | Holz Cluster
| Others |
| HC | Home Club
| Others |
| HC | Home Coming
| Others |
| HC | Home Computer
| Others |
| HC | Home Currency
| Others |
| HC | Homemade Cookies
| Others |
| HC | Homework Club
| Others |
| HC | homocysteine
| Others |
| HC | Honoris Causa
| Others |
| HC | Horizontal Cage
| Others |
| HC | Horizontal Coefficient
| Others |
| HC | Horizontal Cross-connect
| Others |
| HC | Horn Clause
| Others |
| HC | Horny Cop
| Others |
| HC | Hors Categorie
| Others |
| HC | Hors Commerce
| Others |
| HC | Hors de Commerce
| Others |
| HC | Horse Crazy
| Others |
| HC | Hostile Creation
| Others |
| HC | Hosting Controller
| Others |
| HC | Hosting Credits
| Others |
| HC | Hot and Cold
| Others |
| HC | Hot Coffee
| Others |
| HC | Hourly Count
| Others |
| HC | House Call
| Others |
| HC | House Capitol
| Others |
| HC | House Cat
| Others |
| HC | House Church
| Others |
| HC | House Copy
| Others |
| HC | House of Corrections
| Others |
| HC | Houston Concentrate
| Others |
| HC | Hover College
| Others |
| HC | Hugh Charles
| Others |
| HC | Human Communication classes
| Others |
| HC | Human Controlled
| Others |
| HC | Humanitarian Coordinator
| Others |
| HC | Humphrey's Classes
| Others |
| HC | Hunter Clan
| Others |
| HC | Hurt Comfort
| Others |
| HC | Huxmann Cornett
| Others |
| HC | Hyaline Cast
| Others |
| HC | Hybrid Capture
| Others |
| HC | Hybrid Computer
| Others |
| HC | Hydraulic Cylinder
| Others |
| HC | Hydrocarbon
| Others |
| HC | Hydrocortisone
| Others |
| HC | hypercalcaemia
| Others |