China 
Africa 
- Interactive design
- Interactive kiosks
- Interactive media
- Interactivity
- Interatomic potentials
- Interbasin transfer
- Interbeat interval
- Interbedded
- Interbedding
- Interbus
- Intercalation
- Intercarpal joints
- Intercellular adhesion molecule
- Intercellular communication
- Interception
- Interchanges
- Interconnect
- Interconnect bottleneck
- Interconnection
- Intercooler
- Intercostal arteries
- Intercostal muscles
- Interdigital transducers
- Interesterification
- Interface
- Interface metaphors
- Interface standard
- Interfaces
- Interfacial polymerization
- Interfacial rheology
- Interfacial thermal resistance
- Interference
- Interference channel
- Interference filter
- Interference fit
- Interference lithography
- Interferometric microscopy
- Interferometric synthetic-aperture radar
- Interferometry
- Interferon
- Interflow
- Interglacial
- Intergranular corrosion
- Intergranular fracture
- Interior
- Interior-point method
- Interleaved
- Interleaving
- Interleukin 1 receptor antagonist
- Interleukin 10
- Interleukin 12
- Interleukin 13
- Interleukin 17
- Interleukin 2
- Interleukin 21
- Interleukin 3
- Interleukin 4
- Interleukin 5
- Interleukin 6
- Interleukin 7
- Interleukin 8
- Interleukin-1 receptor
- Interleukin-6 receptor
- Interleukins
- Interlocking
- Interlocks
- Intermagnet
- Intermedia
- Intermediate band solar cell
- Intermediate composition
- Intermediate disturbance hypothesis
- Intermediate filaments
- Intermediate goods
- Intermediate representation
- Intermediate value theorem
- Intermediate-frequency amplifier
- Intermediates
- Intermembrane space
- Intermetallic
- Intermittent
- Intermittent claudication
- Intermittent water supply
- Intermodal
- Intermodal freight transport
- Intermodulation
- Internal angle
- Internal ballistics
- Internal bleeding
- Internal capsule
- Internal carotid artery
- Internal cerebral vein
- Internal combustion engine
- Internal drainage board
- Internal elastic lamina
- Internal energy
- Internal environment
- Internal erosion
- Internal fixation
- Internal flow
- Internal globus pallidus
- Internal heat
- Internal heating
- Internal iliac artery
- Internal jugular vein
- Internal limiting membrane
- Internal medicine
- Internal models
- Internal oxidation
- Internal pressure
- Internal rate of return
- Internal resistance
- Internal standard
- Internal waves
- International Desalination Association
- International Green Construction Code
- International HapMap Project
- International Joint Conference on Artificial Intelligence
- International Plumbing Code
- International Reference Ionosphere
- International System of Units
- International chemical identifier
- International flight
- International temperature scale of 1990
- International trade
- Internet
- Internet Protocol Suite
- Internet access
- Internet backbone
- Internet bots
- Internet governance
- Internet infrastructure
- Internet privacy
- Internet radio
- Internet security
- Internet standards
- Internet traffic
- Internet video
- Internetworking
- Interoception
- Interoperability
- Interoperation
- Interossei
- Interpenetrating polymer network
- Interphalangeal
- Interphalangeal joints
- Interphase
- Interplanetary
- Interplanetary internet
- Interplate earthquakes
- Interpolation