- C++
- C++
- C-band
- C/N (Carrier To Noise Ratio)
- Cable Modem
- Cabletuner
- Cableweb
- Cache
- Cache
- Cache
- Cache-geheugen
- CAD (Computer Aided Design)
- CalTech
- CAM (Conditional Access Module)
- Cameo
- Camrecorder
- Cancelbot
- Candela (CD)
- CAPI
- Capture
- Carbon Copy
- CARCAMPING
- Card Reader
- Cardware
- Carkit
- Carrier Detect
- Carry-in
- Cartridge
- Cartridge (1)
- Cartridge (2)
- Cascading Style Sheets
- Cassettedeck
- CC (Carbon Copy)
- CC
- CCD
- CCD
- CCITT
- CD audio (Compact Disc Digital Audio)
- CD-i
- CD-i (Compact Disc Interactive)
- Cd-R
- CD-ROM (Compact Disc - Read Only Memory)
- Cd-rom
- Cd-rom drive
- Cd-rw
- Cd-text
- CDA
- CDF
- CDMA (ode Division Multiple Access)
- CDR
- CDRW
- cDVD (CompactDVD)
- Celeron-processor
- Cell (ID)
- Cell Broadcast
- Cello
- CENELEC
- Centerspeaker
- Centronics
- Cern
- Certificaat Authoriteit
- CGI (Common Gateway Interface)
- CGI
- CGMS (Copy Generation Management System)
- Charles Babbage
- CHARTERVLUCHT
- Chatbox
- Chatten
- CHECK-IN
- Chip
- Chipset
- chmod (change mode)
- Chromatic aberration
- CID (Connected Information Device)
- Cinch
- Cinefiele film
- Cinepak
- Cipher
- CIS
- CISC
- ClariNet
- Clarke belt
- Clickrate
- Clickshop
- Clickware
- Client
- Client-side
- CLIP
- Clipart
- CLIR
- Cloaking
- Clonen
- CLS
- Cluster (1)
- Cluster (2)
- CMOS
- CMOS (2)
- CMSS
- CMYK
- Co-productie
- Coasters
- Coated papier
- Coax
- Coax
- COBOL
- Code
- CODE SHARE
- Codec
- Codec
- Codering
- ColdFusion
- Colon
- Com-poort
- COMET
- Communicatiepakket
- CompactFlash
- CompactFlash
- Compatibel
- Compatibiliteit
- Compiler
- Compileren
- Component video
- Composiet
- Composite video
- Compositie
- Compressie
- Compressieverhouding
- compressorstation
- Comprimeren
- CompuServe
- Compute
- Computer
- Computernetwerk
- Computervirus
- Condensator
- Conferentiegesprek
- Configuratie
- Configuratiescherm
- Configureren
- Connect
- Connector
- Console
- Content-provider
- Continue Autofocus
- Contrast
- Contrast
- Contrast Ratio
- Contrast ratio (TFT)
- Controlepaneel
- Converteren
- Cookie
- Cookie
- Copyright
- Cordless Mouse
- Corps
- Counter
- CPA (Cost Per Action)
- CPC (Cost Per Click)
- CPE (Customer Premise Equipment)
- CPM (Cost Per Mille)
- CPS
- Cps
- CPS (Cost Per Sale)
- CPSR
- CPU (Central Processing Unit)
- CPU
- CPU/CVE
- CR
- Crackers
- Cradle
- Crash
- Crashen
- CRC
- CRISC
- Cron
- Cropping
- Cross polarisation
- Cross-Over
- Crossover
- Crosspost
- Crossposting
- CRT
- CRT/RGB beamer (Cathode Ray Tube)
- Cryptography
- CSS (Cascading Style Sheets)
- CSS
- CSS (Content Scramble System)
- CSS (2)
- CTS
- CU
- CU2
- Cult movie
- Cursor
- CVBS (Color Video Blanking Synchronisation)
- Cyber
- Cybercash
- Cyberpunk
- Cybersex
- Cyberspace
- Cyberspace
- Cybersquatters
