| HOC | Hair On Chest 
| Others |
| HOC | Harlequins Orienteering Club
| Others |
| HOC | Harrier Owners Club
| Others |
| HOC | Head of Chancery
| Others |
| HOC | Head of Contingent
| Others |
| HOC | Head On Collision
| Others |
| HOC | Heads Of Cooperation
| Others |
| HOC | Health Occupations Center
| Others |
| HOC | Hearer Of Cries
| Others |
| HOC | Hearing Officer Conference
| Others |
| HOC | Heatpipe On CPU
| Others |
| HOC | Help Our Children
| Others |
| HOC | Helpful Occurring Clue
| Others |
| HOC | Herald O Connor
| Others |
| HOC | Hercules Operators Council
| Others |
| HOC | Heroes of Order and Chaos
| Others |
| HOC | Herts Orienteering Club
| Others |
| HOC | High Order Calculator
| Others |
| HOC | Higher Order Component
| Others |
| HOC | Higher Order Components
| Others |
| HOC | Higher Order Crossing
| Others |
| HOC | Higher Order Crossings
| Others |
| HOC | Hillman Owners Club
| Others |
| HOC | Hilux Owners Club
| Others |
| HOC | Histoire Olfactive Collective
| Others |
| HOC | History Of Changes
| Others |
| HOC | History of Computer Systems
| Others |
| HOC | History Of Computing
| Others |
| HOC | Hits of Code
| Others |
| HOC | Hoards of Chords
| Others |
| HOC | Hockey Opportunity Camp
| Others |
| HOC | Hogwarts On Crack
| Others |
| HOC | Holden Owners Club
| Others |
| HOC | Home Ownership Center
| Others |
| HOC | Honda Owners Club
| Others |
| HOC | Horizon Custom
| Others |
| HOC | Horizontal Overscan Correction
| Others |
| HOC | Hour of Code
| Others |
| HOC | House Of Cards
| Others |
| HOC | House Of Cars
| Others |
| HOC | House Of Characters
| Others |
| HOC | House Of Climb
| Others |
| HOC | House Of Commodores
| Others |
| HOC | House of Commons
| Others |
| HOC | House of Conceptions
| Others |
| HOC | House of Correction
| Others |
| HOC | House Oversight Committee
| Others |
| HOC | Housing Opportunities Commission
| Others |
| HOC | Houston Orienteering Club
| Others |
| HOC | Human Occupation Construct
| Others |
| HOC | Humanitarian Operations Center
| Others |
| HOC | Humans Of Cambodia
| Others |
| HOC | HUMINT (Human Intelligence) Operations Cell
| Others |
| HOC | Hummer Owners Club
| Others |
| HOC | Hurl On Completion
| Others |
| HOC | Hydraulic Oil Cooler
| Others |
| HOC | Hydrophobic Organic Compound
| Others |
| HOC | Hypermedia Open Center
| Others |
| HOC | Hyundai Owners Club
| Others |
| HOC | Komako, Papua New Guinea
| Others |