- certain event
- certainty
- certainty factor
- certificate
- certification authority
- certified copy
- cga
- chad box
- chafing dish
- chain bond
- chain code
- chain command
- chain condition
- chain field
- chain index
- chain list
- chain matrix
- chain operation
- chain printing
- chain symbol
- chain timber
- chained file
- chained list
- chaining driver
- challenging
- chance mechanism
- change color
- changing contacts
- channel
- channel analysis
- channel density
- channel director
- character
- character arrangement
- character array
- character assembly
- character attribute
- character body
- character box
- character byte
- character check
- character code
- character comparison
- character constant
- character delimiter
- character disassembly
- character emitter
- character field
- character graphics
- character height
- character literal
- character operator
- character path
- character pointer
- character skew
- character style
- character substring
- character text
- character translation
- characteristic equation
- characteristic overflow
- characteristic root
- characteristic series
- characteristic strip
- characteristic underflow
- characteristically
- characteristics distortion
- charge corona
- charged particles
- charging structure
- charity-ware
- chart axes
- chart format
- chart tips
- chat
- chat message
- check field
- check list
- check sorter
- check totaling
- check window
- checking routine
- checkout compiler
- censor
- center button
- center justify
- center map
- center operator
- center section
- centering control
- centesimal
- centile
- centimeter
- central conic
- central curve
- central decomposition
- central involution
- central location
- central site
- central subgroup