- idle list
- IEEE 802 standards
- if amplifier
- igniter
- ignorable coordinates
- ignore character
- ill effect
- ill-conditioned
- ill-posed
- illegal
- illegal character
- hub ring
- human engineering
- human failure
- Humphries equation
- hunt effect
- hurricane
- Huttig equation
- hybrid
- hybrid interface
- hybrid population
- hydrodynamic stability
- hypercylinder
- hyperexponential
- hypergeometric
- hypergeometric polynominal
- hyperhomology module
- hypermedia
- hyperosculation
- hyperparaboloid
- hyperspace
- hypertext
- hypograph
- Hypothesis testing
- hypotrochoid
- hysteresis characteristic
- hysteresis unit
- icon bar
- icon box
- iconic document
- icosahedral
- icosahedral group
- idea processor
- ideal cycle
- ideal line
- ideal network
- ideal product
- ideal sum
- ideal word
- idealize
- idem-potency
- idempotence
- identical functor
- identical morphism
- identical substitution
- identical transformation
- identically
- identically equal
- identifiability
- identifiable
- identification character
- identifier
- identifier octets
- identifier value
- identifier word
- identify operation
- identity
- identity group
- identity homomorphism
- identity morphism
- identity operation
- identity token
- identity unit
- ideographic
- idle
- idle character
- idle cutoff
- idle flag
- idle interrupt
- idle state
- idle time
- hyperbolic spiral
- hyperdocument
- hyperelliptic integral
- hypergeometric distribution
- hypermatrix
- hypermedia application
- hyperquadric
- hypersphere
- hyphen
- hypocompact
- iBook
- IC memory
- ignorance
- ignore blank
- illegal copy
- illegal operation
- illusory
- illusory correlation
- illustration program