- iterative array
- iterative filter
- iterative instruction
- iterative invariant
- iterative operation
- iterative routine
- iterative statement
- ITU Recommendation
- jack
- jack stand
- jacobian
- jaggies
- jam-free
- jammer finder
- Janet
- Japanese localization
- Java
- jigsaw
- Jini
- job accounting
- job action
- job bank
- job begin
- job control
- job file
- job log
- job management
- job networking
- job priority
- job queue
- job region
- job request
- job run
- job scheduling
- job security
- job set
- job statement
- job stream
- joe
- join
- join condition
- join field
- join homomorphism
- join irreducible
- join operation
- joint strip
- keen
- kelvin bridge
- kelvin network
- kerned font
- key assignments
- key code
- key customize
- key diagram
- key field
- key generator
- key in
- key layout
- key letter
- key macro
- key management
- key matrix
- key number
- key range
- key receptacle
- key repeat
- key road
- key table
- key title
- key travel
- key variable
- key word
- keyboard design
- keyboard encoder
- keyboard entry
- keyboard grabbing
- keyboard input
- keyboard layout
- keyboard locking
- keyboard lockup
- keyboard mapping
- keyboard operator
- keyboard password
- keyboard processor
- keyboard selection
- keyboard shortcut
- keyboard template
- keyboard type
- keyboarding
- keying frequency
- keying interval
- keying relationship
- keying speed
- keylock feature
- keynote speech
- keypad
- keyword search
- kick stater
- kill file
- killer pulse