- indecomposable continuum
- indent style
- independence
- independent control
- independent drive
- indeterminate zone
- index build
- index character
- index line
- index search
- indexed address
- indexed system
- indexing language
- indexing method
- indication
- indicator element
- indicator variable
- indirect demonstration
- indirect scanning
- individuality
- indivisible
- induced
- induced representation
- induction motor
- induction stroke
- inductive logic
- industrial television
- industry compatible
- inefficiency
- inequality operator
- inequivalence gate
- inert zone
- inertia form
- inertia tension
- inertial coordinates
- infect
- inference engine
- inference rule
- inferior
- inferior planet
- infimum
- infinite decimal
- infinite discontinuity
- infinite point
- infinite product
- infinite rank
- infinitely
- infinitely divisible
- infinitely great
- infinitely increasing
- infinitely small
- infinitesimal analysis
- infinitesimal element
- infinitesimal group
- infinitesimal nucleus
- infinity
- infix operator
- inflate
- inflexional tangent
- INFO database
- Infomosaic
- informatics
- information acquisition
- information bandwidth
- information carrier
- information display
- information exchange
- information gain
- information handler
- information hiding
- information management
- information measure
- information message
- information network
- Information Provider
- information rate
- information request
- information resource
- information science
- information separator
- information sink
- information storage
- information technology
- information track
- information utility
- informative abstract
- Infoseek
- infostructure
- infrared
- infrared interface
- infrared receiver
- infrared scanner
- infrared transmission
- initial line
- initial order
- initial point
- initial program
- initial quantity
- initial state
- initial value