HAA	HaloAcetic Acid
HAA	Helicopter Association of America
HAA	Hired Assassin Agency
HAB	Hanford Advisory Board
HAB	Harmful Algal Bloom
HAB	Hass Avocado Board
HAB	Have A Blast
HAB	Hawaii Association of the Blind
HAB	Heavy Assault Bridge
HAB	High Altitude Burst
HAB	High Availability Board
HAB	High-Alumina Basalt
HAB	Horn of Africa Bulletin
HAB	Hot American Babe
HAB	Housing Assistance Bureau
HAB	Husbands And Boyfriends
HAB	[Hong Kong] Home Affairs Bureau
HAC	Handbook of Applied Cryptography
HAC	Hershey Apple Core
HAC	Heteroskedasticity and AutoCorrelation
HAC	High-Availability Computing
HAC	Honourable Artillery Company
HAC	Hose Appropriations Committee
HAD	High Aluminum Defect
HAE	High Altitude, long-Endurance
HAF	Halogen Acid Furnace
HAF	Hellenic Air Force
HAG	Hansen Assembly of God
HAG	Hardware Action Group
HAG	Have-A-Go
HAG	Hazardous Activity Group
HAG	Helicopter Action Group
HAG	Hi And Goodbye
HAG	High Assurance Guards
HAG	High-explosive Anti-armor Grenade
HAG	Highest Adjacent Grade
HAG	Highly Academically Gifted
HAG	Home Access Gateway
HAG	Housing Advocacy Group
HAH	Healthcare Association of Hawaii
HAI	Handbook of Artificial Intelligence
HAI	Helicopter Association International
HAI	Hellenic Aircraft Industries
HAJ	Hearts Afire Jewelry
HAJ	Hepaticoporto-Appendico-Jejunostomy
HAJ	Himalayan Association of Japan
HAK	Hugs And Kisses
HAL	Hackers At Large [Event]
HAL	Hard Array Logic
HAL	Hardware Abstraction Layer
HAL	Hardwired Array Logic
HAL	Heuristic ALgorithmic
HAL	HTML Auto Layout
HAL	Hybrid Assisted Limb
HAM	Hold And Modify
HAM	Host Adapter Module
HAN	High-Availability Network
HAN	Home ATM Network
HAO	High Altitude Observatory
HAP	Hardness Assurance Plan
HAP	Hazardous Air Pollutant
HAP	High-Assurance Platform
HAP	Host Access Protocol
HAQ	Half-Assed Question
HAR	Highway Advisory Radio
HAS	Hardened Aircraft Shelter
HAT	Hardware Address Translator
HAT	Hashed Address Table
HAT	Heap Analysis Tool
HAT	Height Above Terrain
HAT	Homework And Teachers
HAT	Host Airline Table
HAU	Host Attachment Unit
HAV	Hepatitis A Virus
HAW	Helicopter Assault Wave
HAX	Half-Assed eXamination
HAY	Hold A Year
HAZ	Heat Affected Zone
HBA	Host Block Adaptor
HBA	Host Bus Adaptor
HBA	Host-Based Authentication
HBB	Home-Based Business
HBC	Hudson Bay Company
HBD	Happy BirthDay
HBD	Helicopter Battle Damage
HBD	Here Be Dragons
HBD	Huge Bag of Dicks
HBE	High Bay Extension
HBF	Head Before Feet
HBG	Hitman's BodyGuard
HBG	Home Buyers Guide
HBH	HeartBreak Hotel
HBI	Heated Biological Input
HBJ	Handcrafted Beaded Jewelry
HBJ	Harcourt, Brace, and Jovanovich
HBJ	Healthy Bodies by Julie
HBJ	Herald Business Journal
HBJ	Hootie and the Blowfish Jeremy
HBJ	Houston Business Journal
HBJ	HTML Business for Java
HBK	Heart Break Kid
HBL	Health Based Level
HBM	Her British Majesty
HBM	High Bandwidth Memory
HBM	His British Majesty
HBN	Hexagonal Boron Nitride
HBO	Home Box Office
HBO	Human Body Odor
HBP	High Blood Pressure
HBQ	Huntington Brass Quintet
HBR	Harvard Business Review
HBR	Higgs-Bosonic Rudder
HBR	High Bit Rate
HBS	Hardware Breakdown Structure
HBT	Heterojunction Bipolar Transistor
HBU	Hub Bearing Unit
HBV	Hepatitis B Virus
HBW	Horizontal BeamWidth
HBX	Hepatitis B Virus X
HBY	Human BiologY
HBZ	Hospital Benefit Zone
HCA	Hospital Corporation of America
HCA	Host Channel Adapter
HCA	HydroxyCitric Acid
HCB	Half Circle Back
HCB	Hampshire Cricket Board
HCB	Hard Carbon Brush
HCB	Health Care Beneficiary
HCB	Height of Cloud Base
HCB	Henri Cartier-Bresson
HCB	Hollow Concrete Block
HCB	Holy Cow Batman
HCB	House Connection Branch
HCB	HTML Comment Box
HCB	Human Capacity Building
HCC	High Constitutional Court
HCC	Host Control Component
HCC	Hyperbaric Compression Chamber
HCD	Hardware Configuration Definition
HCD	Hierarchical Coarse Directory
HCD	Host Controller Device
HCE	Halo Combat Evolved
HCE	Halo Custom Edition
HCE	Hardware Configuration Engineer
HCE	Hawaiian Creole English
HCE	Health Care Experience
HCE	Health Care of the Elderly
HCE	Heater Control Electronics
HCE	Here Comes Everybody
HCE	Highly Compensated Employee
HCE	Hobie Cat Europe
HCE	Hot Carrier Effect
HCE	Human Caused Error
HCE	Hyper-Cerebral Electrosis
HCF	Halt & Catch Fire [bogus CPU instruction]
HCF	High Cycle Fatigue
HCF	Host Command Facility
HCF	Hybrid Coordination Function
HCG	Hard Copy Generator
HCG	Hartford Computer Group
HCG	Health Care Guide
HCG	Hentai Computer Graphics
HCG	Hickson Compact Group
HCG	Hoefler Consulting Group
HCG	Human Communications Group
HCH	Halogenated Cyclic Hydrocarbons
HCH	Health Care for the Homeless
HCH	Herbert Clark Hoover
HCH	Holy Cross Hospital
HCI	Handgun Control, Inc. [now Brady Campaign]
HCI	Hardness Critical Item
HCI	Host Controller Interface
HCI	Hot Carrier Injection
HCI	Human Computer Interface
HCI	HydroCarbon Indicator
HCI	HyperConverged Infrastructure
HCJ	Hague Convention on Jurisdiction
HCJ	Heliborne Common Jammer
HCJ	High Court of Justice
HCJ	Hunting Camp Journal
HCK	Handfree Car Kit
HCK	Hat Check Kelly
HCK	Helmet Camera Kit
HCK	Hemopoetic Cell Kinase
HCK	Hemp Cutter Knife
HCK	Heritage Community of Kalamazoo
HCK	Hermit Crab Kit
HCK	HID Conversion Kit
HCK	Hill Country Karate
HCK	Hindu Council of Kenya
HCK	Historical Confederation of Kentucky
HCK	Home Collection Kit
HCK	Horizontal Component Kit
HCK	Hospice Care Kenya
HCK	Hospital Compressor Kit
HCK	Human Cervical Keratinocyte
HCL	Hardware Compatibility List
HCL	High Containment Lab
HCL	High Cost of Living
HCL	Host Control Links
HCM	Hollow Cathode Magnetron
HCM	Home Computer Museum
HCM	Human Capital Management
HCN	High Calorie And Nitrogen
HCN	Historical Climatology Network
HCN	Homework Center Newsletter
HCO	Hubbard Communication Office
HCP	Handling Charge & Profit
HCP	Hardness Critical Procedures
HCP	Hardness Critical Process
HCP	Heads Up Control Panel
HCP	Health Care Provider
HCQ	Health Care Quality
HCQ	Hepatitis Council of Queensland
HCR	Hodge Computer Research, Inc.
HCS	Hot-Carrier Suppressed
HCT	Hardware Compatibility Tests
HCT	Hypothetical Changeset Tool
HCU	Home Computer User
HCU	Hydraulic Control Unit
HCV	Hepatitis C Virus
HCW	Hard Corrugated Wall
HCW	Hardcore Championship Wrestling
HCW	Health Care Worker
HCW	Heaven Can Wait
HCW	Heavily Cold-Worked
HCW	Hershey's Chocolate World
HCW	Heterogeneous Computing Workshop
HCW	Hot Carcass Weight
HCW	Hot Coupon World
HCW	How Computers Work
HCX	High Current eXperiment
HCY	High Contrast Yellow
HCY	Higher Council for Youth
HCZ	Harlem Children's Zone
HCZ	High Conductivity Zone
HDA	Head Disk Assembly
HDB	Hard DataBase
HDB	High Density Bay
HDB	High Density Bipolar
HDB	Hollow Dielectric Beamguide
HDB	Home Defense Brigade
HDB	Hot Dogs and Buns
HDB	Housing Development Board
HDB	Hull Distribution Box
HDB	Hydrostatic Design Basis
HDC	Hard Disk Controller
HDC	High Dependability Computing
HDD	Hard Disk Drive
HDD	Head Down Display
HDD	Honest Declaration about Dissertations
HDE	Hacking Defined Experts
HDE	Heater Drive Electronics
HDE	Heavy-Duty Engine
HDE	Higher Diploma in Education
HDE	Highly Distributed Environment
HDE	Historical Data Entry
HDE	Home Docking Environment
HDE	Hottest Deals Ever
HDE	Humanitarian Device Exemption
HDE	Hypertext Document Engineering
HDF	Hierarchical Data Format
HDF	Horrible Document Format
HDF	Hubble Deep Field
HDG	Harbison Design Group
HDG	High Density Gateway
HDG	Home Defense Gun
HDG	Hot Dip Galvanized
HDH	Hawaii Department of Health
HDH	HDLC Distant Host
HDH	His Divine Holiness
HDH	Home Dear Home
HDI	Head to Disk Interference
HDI	Human Data Interaction
HDI	Human Development Index
HDJ	Homeland Defense Journal
HDK	Hardware Development Kit
HDL	Hardware Definition Language
HDL	High Density Lipoprotein
HDM	Hardware Device Module
HDM	Heuristic Data Mining
HDM	Hot Dark Matter
HDN	a Hard Day's Night
HDN	Health and Development Network
HDN	Hemolytic Disease of Newborn
HDN	Hispanic Digital Network
HDN	Host Domain Name
HDO	Headache During Orgasm
HDO	Health Delivery Organization
HDO	Hearing Designation Order
HDO	Heavy Duty Oil
HDO	High Demand Occupation
HDO	High Density Overlay
HDO	Holy Day of Obligation
HDO	Homeland Defense Office
HDO	Housing Development Office
HDO	Human Development Organization
HDO	Humanitarian Demining Operation
HDO	Hydrogen Deuterium Oxide
HDP	Harbinger of the Doomed Packet
HDP	Hardware Development Plan
HDP	High-Density Plasma
HDQ	Hanged Drawn and Quartered
HDQ	Harmonic Differential Quadrature
HDR	Hard Disk Recorder
HDR	High Data Rate
HDR	High Dynamic Range
HDR	Humanitarian Daily Ration
HDS	Hitachi Data Systems
HDS	Home Directory Service
HDT	Host Digital Terminal
HDU	Hard Disk Unit
HDU	Harley-Davidson University
HDU	Hazardous Device Unit
HDU	Head-End Distribution Unit
HDU	Health Development Unit
HDU	Heat Dissipation Unit
HDU	Helmet Display Unit
HDU	HemoDialysis Unit
HDU	High Dependency Unit
HDU	High-Density Urethane
HDU	Homeless Diversion Unit
HDU	Hose and Drogue Unit
HDU	Hose Drum Unit
HDU	How Dare You [!]
HDU	Hydraulic Drive Unit
HDV	Harmonic Demining Vehicle
HDV	Heavy Duty Vehicle
HDV	Helen Duval Visuals
HDW	Hanford Defined Waste
HDW	Harley-Davidson of Washington
HDW	Hemoglobin Distribution Width
HDW	High Dependency Ward
HDW	Hollow Dielectric Waveguide
HDX	Half DupleX
HDY	Henry Davis York
HDZ	Harbin Development Zone
HDZ	Health Disparity Zones
HDZ	Hillside Development Zone
HEA	Head Equipment Assembly
HEA	Hot Environmental Attack
HEB	Health Evidence Bulletins
HEB	Heating Element Bank
HEB	Here Everything's Better
HEB	High Efficiency Boiler
HEB	High Energy Biscuit
HEB	High-Energy Beam
HEB	Hindu Endowments Board
HEB	Hot Electron Bolometer
HEC	Header Error Correction
HEC	High-End Computing
HED	Hall Effect Device
HED	Hazard Evaluation Division
HED	Health Effects Division
HED	Hidrotic Ectodermal Dysplasia
HED	High Energy Density
HED	Higher Education Department
HED	Home Entertainment Division
HED	Horizontal Electric Dipole
HED	Household Energy and Development
HED	Human and Economic Development
HED	Human Engineering Data
HED	Human Equivalent Dose
HED	Human Experience Development
HED	Humor-Enhancing Drugs
HED	Hypohidrotic Ectodermal Dysplasia
HEE	Health Enterprise East
HEE	High Energy Efficiency
HEE	Higher Ed Experts
HEE	Higher Education Establishments
HEF	Hamster Embryo Fibroblast
HEF	Hazardous Equipment or Facilities
HEF	High Efficiency Filter
HEF	High-Energy Fuel
HEF	Higher Education Funding
HEF	Home Education Foundation
HEF	Houston Environmental Foresight
HEF	Human Energy Field
HEG	Head-End Gateway
HEG	High End Group
HEG	Higher Education Grant
HEG	Hollywood Entertainment Group
HEG	Homogeneous Electron Gas
HEH	Hang 'Em High
HEH	Hongkong Electric Holdings
HEH	Household Energy and Health
HEH	Hydraulic External Hatch
HEI	Higher Education Institution
HEJ	Health and Environmental Justice
HEJ	Health Education Journal
HEJ	Helen E. Johnson
HEK	Halo Editing Kit
HEK	HayLayer, Elastic, Krux
HEK	Human Embryo Kinase
HEK	Human Epidermal Keratinocyte
HEL	High Energy Laser
HEL	Human Engineering Laboratory
HEM	High Energy Magic
HEM	High-Efficiency Matching
HEM	High-level Entity Management
HEM	Human Eradication Mode
HEN	Health Education Network
HEN	Heat Exchanger Network
HEN	Home Education News
HEN	Home Enteral Nutrition
HEO	High Earth Orbit
HEP	Hardware Empowerment Program
HEP	High-Energy Physics
HEQ	Health Education Quarterly
HEQ	High End Quartz
HEQ	High Environmental Quality
HEQ	Higher Education Qualifications
HEQ	Hispanic Executive Quarterly
HEQ	History of Education Quarterly
HER	Hazards Evaluation Report
HER	High Efficiency Red [LED]
HES	Habitat Evaluation System
HES	Halliburton Energy Services
HES	Hamlet Evaluation System
HES	Hazard Elimination Safety
HES	Health, Environment and Safety
HES	Heater Exchange Subassembly
HES	High End Server
HES	High Energy Scrubber
HES	High-consequence Engineering Systems
HES	Highway Enhancement System
HES	Historical Engine Society
HES	Historical European Swordsmanship
HES	History of Economics Society
HES	History of Education Society
HES	Hitchhiker Ejection System
HES	Home Electronic System
HES	Home Energy Station
HES	Hospital Episode Statistics
HES	Hostile Environment Simulator
HES	Household Expenditure Survey
HES	Human Embryonic Stem [cell]
HES	Human Environmental Services
HES	Hurricane Evacuation Study
HES	Hybrid Earth Station
HES	Hygiene, Education and Sanitation
HET	Hall Effect Thruster
HET	Harpoon Embedded Trainer
HET	Harvest Energy Technology, Incorporated
HET	Health Education Trust
HET	Health/Education Telecommunications
HET	Heavy Equipment Transport
HET	High Energy Telescope
HET	High-Efficiency Toilet
HET	History of Economic Thought
HET	Hobby-Eberly Telescope
HET	Hollow Earth Theory
HET	Holocaust Educational Trust
HET	Home Entertainment Today
HET	Hudson Essex Terraplane
HET	Human Engineering Test
HET	Human Environmental Training
HET	Human Exploitation Team
HET	Humane Experimental Technique
HET	Hydrate Equilibrium Temperature
HET	Hyperplanes Exact Test
HEU	Highly-Enriched Uranium
HEV	Hazardous Environment Vehicle
HEV	Hemagglutinating Encephalomyelitis Virus
HEV	Hemorrhagic EndoVasculitis
HEV	Hemorrhagic Enteritis Virus
HEV	HEndra Virus
HEV	Hepatitis E Virus
HEV	High Endothelial Venules
HEV	High Energy Visible [Light]
HEV	High Entertainment Value
HEV	High-End Visualization
HEV	Human Entry Vehicle
HEV	Hybrid Electric Vehicle
HEW	Home Electronics World [show]
HEW	[USA Department of] Health, Education and Welfare
HEX	High-Energy X-ray
HEY	Health and Education for Youth
HEY	Healthy Early Years
HEY	Help Empower Youth
HEY	Honoring Emancipated Youth
HEY	Hull and East Yorkshire
HEY	Hyperimmune Egg Yolk
HEZ	Handloom Export Zone
HEZ	Health Enterprise Zones
HEZ	Hunter Economic Zone
HEZ	Hurricane Evacuation Zones
HFA	Hierarchical Foreign Agent
HFA	High-Functioning Autism
HFB	Hacking For Britney [Spears]
HFC	Hot File Clustering
HFC	Hybrid Fiber Coax [cable]
HFC	HyperFine [splitting] Constant
HFD	Home For Dinner
HFE	Human Factors Engineering
HFF	Half Forward Flank
HFF	Hardy Fern Foundation
HFF	Heartland Film Festival
HFF	Hemispherical Free Field
HFF	Hermetic Ferruled Fiber
HFF	High Frequency Furnace
HFF	Hollywood Film Festival
HFF	Hope For Families
HFF	Horizontal Flute Factor
HFG	Hand-Foot-Genital [syndrome]
HFG	Harmonic Frequency Generator
HFG	Hearing From God
HFG	Hedge Fund Group
HFG	Heritage Financial Group
HFG	High Five Ghost
HFG	Home Fellowship Group
HFG	Home Friendship Groups
HFG	Honest Food Guide
HFG	Human Factors Group
HFH	Habitat For Humanity
HFH	Heart Failure Hospitalization
HFH	Henry Ford Hospita
HFH	Homes For Haringey
HFI	Hardware Fault Insertion
HFI	Healing fFr Iran
HFI	Health Facility Institute
HFI	Health Food Institute
HFI	Healthcare Financial, Inc.
HFI	Healthy Forests Initiative
HFI	Hedge Fund Index
HFI	Held For Investment
HFI	Hepatitis Foundation International
HFI	Hereditary Fructose Intolerance
HFI	High-Frequency Induction
HFI	Highly Food Insecure
HFI	Hollywood FIlm
HFI	Hormone-Free Interval
HFI	Host Front-End Interface
HFI	Hostile Fire IndicationInstitute
HFI	Human Factors Interface
HFI	Human Factors International
HFI	Human Freedom Index
HFI	Hunt Foods and Industries
HFJ	Hammond's Fob Jockeys
HFJ	Heart Foundation of Jamaica
HFJ	Hedge Fund Japan
HFJ	Homeowners For Justice
HFK	Hands Free Kit
HFK	Health For Kids
HFK	Human Foreskin Keratinocyte
HFL	Habbo Football League
HFL	Haitian For Life
HFL	Hard Fast and Loud
HFL	Harvard Freshman Lightweights
HFL	Healthy For Life
HFL	Helium Fill Line
HFL	Herbie Fully Loaded
HFL	High Frequency Laughter
HFL	High Frequency Line
HFL	High Fuel Level
HFL	Highest Flood Level
HFL	Highly Flammable Liquid
HFL	Human Fetal Lung
HFL	Hundred-Fold-Life
HFL	Hydraulic Flying Lead
HFM	Hand, Foot and Mouth [Disease]
HFN	Hands, Feet & Nails
HFN	Hastily Formed Network
HFN	Healing For the Nations
HFN	Home Furnishings News
HFN	Homebuilders Financial Network
HFN	Honor Flight Network
HFN	Human Factors North, Incorporated
HFN	Human-Friendly Naming
HFO	Heavy Fuel Oil
HFP	Host Front-end Protocol
HFQ	Haemophilia Foundation Queensland
HFQ	Health and Fatigue Questionnaire
HFR	Hazard Fuel Reduction
HFR	Hedge Fund Research
HFR	Hedge Fund Returns
HFR	High Fidelity Radar
HFR	High Flux Reactor
HFR	High Focal Range
HFR	High Force Research
HFR	High Frequency Radio
HFR	High Frequency Recombinant
HFR	High Frequency Resonance [Technique]
HFR	Hobbit Frame Rate
HFR	Hold For Release
HFR	Huge Fast Router
HFR	Hybrid Fiber Radio
HFS	Hardware Functionality Scan
HFS	High-Frequency System
HFS	HotFax Share
HFS	HyperFine Splitting
HFS	[Apple] Hierarchical File System
HFT	High-Frequency Trading
HFT	[IBM] High Function Terminal
HFU	Hand-Foot-Uterus [syndrome]
HFU	Heat Flow Unit
HFU	Heater Firing Unit
HFU	Help For the Underprivileged
HFU	Hockey Fans United
HFU	Holy Family University
HFV	Hedge Fund Ventures
HFV	Hemorrhagic Fever Virus
HFV	High Frequency Ventilation
HFV	Human Foamy Virus
HFV	Hypothetical Future Value
HFW	Habbo Fan World
HFW	Habitat For Wildlife
HFW	High Frequency Welded
HFW	High-Frequency Word
HFW	Historic Fort Worth
HFW	Hole Full of Water
HFW	Holman Fenwick Willan
HFX	Hands Free eXpandable
HFY	Happy For You
HFY	Hearts For Youth
HFY	Horizons For Youth
HFZ	Healthy Fitness Zone
HFZ	Hills Face Zone
HGA	Head Gimbal Assembly
HGA	Hercules Graphics Adapter
HGA	High Gain Antenna
HGB	He-Goat Blood
HGC	Heads-Up Guidance Computer
HGC	Hercules Graphics Card
HGC	Human Genetics Commission
HGD	Have a Good Day
HGD	High Grade Dysplasia
HGD	Hockey General Discussion
HGD	Hot Gas Discharge
HGD	Howie Green Design
HGD	Hunter Gatherer Designs
HGD	Husky Game Development
HGD	Hymenoptera Genome Database
HGE	Hughes Glomar Explorer
HGF	Hallelujah Gospel Family
HGF	Harold Grinspoon Foundation
HGF	Harrison Goddard Foote
HGF	Head Gasket Failure
HGF	Head of Global Finance
HGF	Hellenic Golf Federation
HGF	Hepatic Growth Factor
HGF	Hepatocyte Growth Factor
HGF	Hermite Gaussian Function
HGF	Hierarchical Gaussian Filter
HGF	Higher Ground Foundation
HGF	Holiday Girl Friend
HGF	Holy Ghost Fathers
HGF	Horizontal Gradient Freeze
HGF	Household Goods Forwarders
HGF	Housing Guarantee Fund
HGF	Human Growth Factor
HGF	Human Growth Formula
HGF	Human Growth Foundation
HGF	Human Gullibility Factor
HGF	Hybridoma Growth Factor
HGF	Hypothalamus Growth Factor
HGG	Hackerspace Global Grid
HGG	Has Gone Gold
HGG	Hearthstone Global Games
HGG	Hermantown Girls Group
HGG	High Geothermal Gradient
HGG	High Grade Gliomas
HGG	Historical Genealogy Gene
HGG	Hot Gas Generator
HGG	Hot Glue Gun
HGG	Howard Greenberg Gallery
HGG	Hugh Green Group
HGG	Human Gamma Globulin
HGG	Human Genetics and Genomics
HGH	Human Growth Hormone
HGI	Hardgrove Grindability Index
HGI	Harvard Global Institute
HGI	Hilton Garden Inn
HGI	Holy Grail Indicator
HGI	Houston Galveston Institute
HGI	Hydromechanical Grease Interceptor
HGJ	Hatton Garden Jewellers
HGJ	Heated Garlic Juice
HGK	Home Grown Kids
HGK	House Garden & Kitchen
HGL	Happy Go Lucky
HGL	Hardcore Gamer League
HGL	Harvard Geospatial Library
HGL	Head Grade Line
HGL	Healthy Gay Life
HGL	Hewlett-Packard Graphics Language
HGL	Hot Gas Layer
HGL	Human Gastric Lipase
HGL	Hydraulic Grade Line
HGL	Hydraulic Ground Lift
HGL	Hydrocarbon Gas Liquid
HGM	Henk's GTF Monitor
HGS	Head Up Guidance System
HGV	Heavy Goods Vehicle
HGV	Hypersonic Glide Vehicle
HHD	Hickory Horned Devil
HHD	Http-address Humongosity Diminisher
HHD	Hybrid Hard Drive
HHE	Human Hibernation Experiment
HHG	Holy Hand Grenade
HHH	Healthy Homes Hospitals
HHH	Holland Heineken House
HHI	Herfindahl-Hirschman Index
HHJ	Her Honor Judge
HHJ	His Honor Judge
HHQ	Higher HeadQuarters
HHS	[USA Department of] Health and Human Services
HIB	Humble Indie Bundle
HIC	Hangover Information Center
HIC	Hybrid Integrated Circuit
HID	High-Intensity Discharge
HID	Human Interface Device
HIF	al-Haramain Islamic Foundation
HIF	Hyper-G Interchange Format
HIG	High-value [Detainee] Interrogation Group
HIG	How's It Going
HIG	Human Interface Group
HIG	Human Interface Guidelines
HIL	Hardware In the Loop
HIL	Horizontal Integrity Limit
HIL	Human Interface Loop
HIM	His Imperial Majesty
HIN	Habit Inhibiting Novelty [as opposed to NIH syndrome]
HIO	High-Impact Outage
HIP	Hacking In Progress [conference]
HIP	Hardware Instrumentation Package
HIP	High Impact Performance
HIP	Host Identity Payload
HIP	Hot Isostatic Pressure
HIP	HSSI Interface Processor
HIP	Human Interactive Proof
HIP	Hybrid Integration Platform
HIR	High-level Intermediate Representation
HIS	Health Information System
HIS	Highest International Standards
HIS	Home Internet Solution
HIS	Honeywell Information System
HIS	Hospital Information System
HIS	[Microsoft] Host Integration Server
HIT	Health Indication Test
HIT	HIerarchical Trace [Processor]
HIT	High Impact Technology
HIU	Host Interface Unit
HIV	Hacker, Intruder, or Virus
HIV	Human Immunodeficiency Virus
HJA	[Origami] Huzita-Justin Axioms
HJB	[SUN] HotJava Browser
HKA	Horizontal Key Actions
HKF	Host Key File
HKL	Hong Kong Luna
HLA	High Level Assembly
HLC	Heavy Lift Capability
HLC	Host Level Call [Interface]
HLD	Head Level Display
HLE	Hacking Linux Exposed
HLE	Hardware Lock Elision
HLE	Higher Layer Entity
HLF	Holy Land Foundation
HLF	Horizontal Laminar Flow
HLF	Human Liberation Front
HLI	High Level Information
HLL	High-Level [programming] Language
HLN	High Level Network
HLN	Hispanic Leadership Network
HLO	High-Level Optimizer
HLP	Helsinki Language Processor
HLQ	High Level Qualifier
HLR	Home Location Register
HLS	Helicopter Landing Site
HLS	High-Level Synthesis
HLS	HTTP Live Streaming
HLS	Hue, Luminance, Saturation
HLS	Hyperactive Libido Syndrome
HLT	High Level Term
HLV	Heavy Lift Vehicle
HMA	High Memory Area
HMC	Halley Multicolor Camera
HMC	Hardware Management Console
HMC	Hosted Messaging & Collaboration
HMC	Hybrid Memory Cube
HMC	Hydro Mechanic Control
HMD	Head Mounted Display
HMD	Helmet-Mounted Designator
HME	[SUN] Happy Meal Ethernet [card]
HMF	High Magnetic Field
HMG	Heavy Machine Gun
HMI	Handbook of Maintenance Instructions
HMI	Helioseismic and Magnetic Imager
HMI	HTML Mail Interface
HMI	Hub Management Interface
HMI	Human-Machine Interface
HML	Home Media Librarian
HMM	Heavy Maintenance Manual
HMM	Hidden Markov Model
HMM	Hungry Movie Maker
HMO	Health Maintenance Organisation
HMO	Hibbert Moneymaking Organization
HMO	Hueckel Molecular Orbital
HMP	Haughton Mars Project
HMP	Head-Mounted Projector
HMP	Host Monitoring Protocol
HMS	Hazardous Materials Summary
HMS	Helmet Mounted Sight
HMS	Her Majesty's Ship
HMS	His Majesty's Ship
HMT	Her Majesty's Transport
HMT	His Majesty's Transport
HMU	Height Monitoring Unit
HMU	Hydraulic Mechanical Unit
HMV	His Master's Voice
HNF	Hermite Normal Form
HNN	High-performance Network Node
HNS	Hospitality Network Service
HNS	Host Nation Support
HNS	Hughes Network Systems
HNY	Happy New Year
HOA	HomeOwners Association
HOA	Horn Of Africa
HOD	Host On-Demand
HOE	Homing Overlay Experiment
HOF	Higher Order Function
HOL	Ha'd Out Loud
HOL	Head-Of-the-Line
HOL	High Order Language
HON	Health On the Net
HOP	Hacktic Office Party
HOP	HangOut Party
HOR	House Of Representatives
HOS	Head Of String
HOS	Higher Order Software
HOT	Hawaii Ocean Timeseries
HOT	Heap Only Tuples
HOT	High Oil Temp
HOT	Hold Over Time
HOT	Honest Open and Transparent
HOV	High Occupancy Vehicle
HOW	Hand-Over Word
HOW	Home Owners Warranty
HPA	Halifax Port Authority
HPA	Hamburg Port Authority
HPA	Harry Potter Alliance
HPA	Hawaii Preparatory Academy
HPA	Health Protection Agency
HPA	Hecto PAscal
HPA	Hertfordshire Pedal Aeronauts
HPA	High Power Amplifier
HPA	High Priest of Amun
HPA	High Privilege Account
HPA	High-Performance Addressing
HPA	High-Pressure Air
HPA	Highland Prince Academy [de Mexico]
HPA	Hollywood Post Alliance
HPA	Horizontal Pod Autoscale
HPA	Host-Protected Area
HPA	Howlin' Pelle Almqvist
HPA	hpa Hans Peter Anvin
HPA	Human Physical Appearance
HPA	Human Platelet Antigen
HPA	Human Protein Atlas
HPA	Human-Powered Aircraft
HPA	Hurlingham Polo Association
HPA	Hydrogen Pinch Analysis
HPC	Handheld Personal Computer
HPC	Harmonized Product Catalog
HPC	Hasty Pudding Cipher
HPC	Hewlett-Packard Compaq
HPC	High Pressure Compressor
HPC	High-Performance Computing
HPC	Highly Paid Consultant
HPD	High Performance Division
HPE	Hewlett Packard Enterprise
HPF	High-Performance Fortran
HPG	Hewlett-Packard Graphics
HPI	Hardware Platform Interface
HPI	High Pressure Isolation
HPI	Hourly Postflight Inspection
HPJ	Help ProJect
HPL	High-Performance Logic
HPL	Honest Public License
HPL	The Handbook of Programming Languages
HPM	Hazardous Production Materials
HPM	High-Power Microwave [bomb]
HPO	Higher Performance Option
HPP	Hacker's Profiling Project
HPP	Heuristic Programming Project
HPP	Homogenous Poisson Process
HPP	HTTP Parameter Pollution
HPR	High Performance Routing
HPR	High Power Relay
HPR	High Production Release
HPS	Hardened Personnel Shelter
HPS	Helmet Positioning System
HPS	HepatoPulmonary Syndrome
HPS	High-Performance Selling
HPS	High-Performance Substrate
HPT	High Pressure Turbine
HPU	Hydraulic Power Unit
HPV	Health Purchasing Victoria
HPV	High Pressure Valve
HPV	Human Papilloma Virus
HPW	High Performance Workstation
HPX	High Performance ParalleX
HPX	High Power eXploration
HQC	Halal Quality Control
HQL	Hibernate Query Language
HRA	Home Recording Act
HRA	Human Reliability Analysis
HRC	Hard Rock Cafe
HRC	Hillary Rodham Clinton
HRC	Human Rights Commission
HRC	[United Nations] Human Rights Council
HRD	Human Resources and Development
HRD	Human Rights Defense [International]
HRD	Hypothetical Reference Decoder
HRG	High Resolution Graphics
HRH	Harry Ron and Hermione
HRH	Her Royal Highness
HRH	His Royal Highness
HRH	Human Resources for Health
HRI	Hazard Risk Index
HRI	Height Range Indicator
HRI	High Resolution Imager
HRL	Headquarters, Research Laboratory
HRL	Human Research Laboratory
HRM	Hardware Reference Manual
HRM	Hierarchical Resource Manager
HRM	High-Resolution Mapping
HRM	Human Resource Management
HRR	High Ramp Rate
HRS	Human Recognition Services
HRT	Hard Real-Time
HRT	Hormone Replacement Therapy
HRT	[word processing] Hard ReTurn
HRV	Heart Rate Variability
HRV	Heat Recovery Ventilation
HRW	Human Rights Watch
HSA	Hardware System Area
HSA	Health Savings Account
HSA	Health Surveillance Assistants
HSA	Heterogeneous System Architecture
HSA	High Speed Amphibian [car]
HSB	Hue, Saturation, Brightness
HSC	Hall Social Coordinator
HSC	Hanging Side Comment
HSC	Hardware System Command
HSC	Hierarchical Storage Controller
HSC	Human Specimen Control
HSD	Hardware Specification Document
HSD	High-Satisfaction Day
HSD	Homeland Security Department
HSD	The Hague Security Delta
HSE	[UK] Health and Safety Executive
HSF	Heat Sink Fan
HSH	Heat Sinks for the Homeless
HSH	His Serene Highness
HSI	Health and Safety Institute
HSI	High Speed Interface
HSI	Hockey Stick Index
HSI	Homeland Security Investigations
HSI	Horizontal Situation Indicator
HSI	Hot Section Inspection
HSI	Hue, Saturation, Intensity
HSI	Human Systems Integration
HSK	Horrendous Space Kablooie
HSL	Heading SeLect
HSL	Hub Support Layer
HSL	Hue Saturation and Lightness
HSM	Hardware Security Module
HSM	Hardware-Specific Module
HSM	Hierarchical Storage Management
HSM	Host Security Module
HSM	HotSync Manager
HSN	Hopping Sequence Number
HSN	Hours Since New
HSP	Highly Sensitive Person
HSP	Host Signal Processing
HSP	[HST] High Speed Photometer
HSR	High Stability Reference
HSS	High Speed Steel
HSS	Hit Song Science
HSS	Holland Sea Search
HSS	Home Subscriber Server
HSS	Hypothetical Stream Scheduler
HST	Hawaiian Standard Time
HST	High Speed Technology
HST	Hint [Branch] Strongly Taken [x86 CPU instruction]
HST	Hubble Space Telescope
HSV	Herpes Simplex Virus
HSV	Hue Saturation Value
HTA	Hollywood Talent Agency
HTA	HTML Application
HTB	Hierarchical Token Bucket
HTC	Hardware Trace Cache
HTC	High Pressure Turbine Casing
HTC	High Tech Computer [Corporation]
HTF	How The Fuck
HTG	HunT Group
HTH	Hope This Helps
HTH	Hotlist To HTML
HTK	Hits To Kill
HTL	High Threshold Logic
HTM	Hardware Transactional Memory
HTM	Hierarchical Temporal Memory
HTM	Hierarchical Triangular Mesh
HTO	High-Tech Offensive
HTO	High-Temperature Oxidation
HTS	Horizontal Test Stand
HTT	Hot To Trot
HTT	Hyperloop Transportation Technologies
HTT	HyperText Template
HTU	Helmet Tracker Unit
HUC	Honker Union of China
HUD	Head-Up Display
HUD	[USA] Housing and Urban Development
HUP	Head Up Panel
HUP	Hospital of the University of Pennsylvania
HUR	High Usage Report
HUT	Hopkins Ultraviolet Telescope
HVA	Harvest Vulnerability Assessment
HVB	High Voltage Breaker
HVC	Holographic Versatile Card
HVD	Holographic Versatile Disk
HVE	Homegrown Violent Extremist
HVF	Hillary Victory Fund
HVM	Hybrid Virtual Machine
HVN	Hearing Voices Network
HVS	High Value Specialists
HVV	Henk Van Voorthuijsen
HVV	Her Velvet Vase
HVV	High Voltage Valley
HVV	Hunter Valley Vets
HVV	Hyper Velocity Vehicle
HVV	Hyperlink Vector Voting
HWB	Hot-Water Bottle
HWD	Height-Width-Depth
HWE	HardWare Enablement
HWG	HTML Writers Guild
HWM	High-Water Mark
HWP	HardWare Prefetcher
HWP	Heavy-Weight Process
HWP	Height and Weight Proportionate
HWR	HandWriting Recognition