China 
Africa 
- Heterochromatin
- Heteroclinic cycle
- Heteroclinic orbits
- Heterocyclic
- Heterocyclic amines
- Heterocyclic compounds
- Heterocysts
- Heterodimers
- Heterodyne
- Heterofullerene
- Heterogeneity
- Heterogeneous
- Heterogeneous catalyst
- Heterogeneous combustion
- Heterogeneous computing
- Heterogeneous network
- Heterojunction
- Heterologous
- Heterologous expression
- Heterolysis
- Heteronuclear molecule
- Heteropoly acid
- Heteroscedasticity
- Heterosis
- Heterotrimeric G proteins
- Heulandite
- Heuristics
- Heusler alloys
- Heusler compounds
- Hevein
- Hexabenzocoronene
- Hexabromocyclododecane
- Hexachlorobenzene
- Hexachlorobutadiene
- Hexachlorocyclohexane
- Hexachloroethane
- Hexadecane
- Hexadecimal
- Hexadentate ligand
- Hexafluoride
- Hexafluoro-2-propanol
- Hexafluorobenzene
- Hexafluorophosphate
- Hexafluoroplatinate
- Hexafluoropropylene
- Hexafluoropropylene oxide
- Hexagonal
- Hexagonal close-packed
- Hexagonal lattice
- Hexagonal phase
- Hexagons
- Hexagram
- Hexahedron
- Hexamethylene diisocyanate
- Hexamethylenediamine
- Hexamethylenetetramine
- Hexamine
- Hexanal
- Hexane
- Hexanitrostilbene
- Hexanoic acid
- Hexanol
- Hexapod
- Hexatic phase
- Hexavalent chromium
- Hexene
- Hexokinase
- Hexoses
- Hexoskin
- Heyting algebra
- Hidden attractor
- Hidden markov random field
- Hidden node problem
- Hidden semi-markov model
- Hidden subgroup problem
- Hides
- Hierarchical classification
- Hierarchical clustering
- Hierarchical database
- Hierarchical modulation
- Hierarchical organization
- Hierarchical routing
- Hierarchical task network
- Hierarchy
- Higgs Boson
- High altitude
- High altitude wind power
- High availability
- High color
- High dimensional model representation
- High earth orbit
- High energy density matter
- High energy density physics
- High fidelity
- High frequency
- High frequency approximation
- High harmonic generation
- High impact polystyrene
- High impedance
- High intensity magnetic separators
- High level architecture
- High memory
- High performance fiber reinforced cementitious composites
- High pressure
- High pressure jet
- High production volume chemicals
- High spin
- High tech
- High tibial osteotomy
- High voltage
- High water mark
- High-Bit-Rate Digital Subscriber Line
- High-Bit-Rate Digital Subscriber Line 2
- High-availability cluster
- High-definition map
- High-definition video
- High-density polyethylene
- High-dimensional model representation
- High-energy phosphate
- High-energy x-rays
- High-energy-density matter
- High-entropy alloy
- High-entropy alloys
- High-field asymmetric-waveform ion-mobility spectrometry
- High-frequency approximation
- High-functioning autism
- High-intensity magnetic separators
- High-level design
- High-level programming language
- High-level synthesis
- High-level waste
- High-molecular-weight kininogen
- High-occupancy toll lane
- High-pass filters
- High-performance buildings
- High-performance fiber-reinforced cementitious composites
- High-performance green buildings
- High-performance plastics
- High-power amplifiers
- High-power impulse magnetron sputtering
- High-pressure chemistry
- High-protein diet
- High-resolution computed tomography
- High-resolution schemes
- High-rise
- High-speed flight
- High-speed grinding
- High-speed steel
- High-strength low-alloy steel
- High-tech