- Claudia Schiffer
- c
- C Sword 90
- C-130
- C-17 Globemaster
- C4i
- C/A (album Lilu)
- Cabeltech
- Cadillac (producent samochodów)
- Caenorhabditis elegans
- Cahokia
- Calgary (Miasto)
- california
- call center
- Call of Duty (gra)
- callcenter
- całkowite zaćmienie Słońca
- Cambridge
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- Camelot
- Cameron James
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- camper
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- Campus Warsaw
- campylobacter
- Canal+ (stacja telewizyjna)
- Canal+ Cyfrowy Sp. z o.o. (Firma)
- Candy
- Candy Bianca
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- Canon (firma)
- canon DP-V3010
- Canon EF 16-35mm f/4L IS USM
- Canon EF 200-400mm f/4L IS USM Extender 1.4x
- Canon EF-M 55-200mm f/4
- Canon EF-S 10-18mm f/4.5-5.6 IS STM
- Canon EOS
- Canon EOS 1100D
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- Canon EOS 5D Mark IV
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- Canon EOS C100
- Canon EOS C300 Mark II
- Canon EOS M10
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- Canon EOS-1D X Mark II
- Canon IXUS 160
- Canon IXUS 165
- Canon ME20F-SH
- Canon PIXMA PRO-10S
- Canon PowerShot G1 X Mark II
- Canon PowerShot G3X
- Canon PowerShot G7 X
- Canon PowerShot G9 X
- Canon PowerShot G9 X Mark II
- Canon PowerShot N2
- Canon PowerShot S120
- Canon PowerShot SX270 HS
- Canon PowerShot SX280 HS
- Canon PowerShot SX400 IS
- Canon PowerShot SX510
- Canon PowerShot SX520 HS
- Canon PowerShot SX530 HS
- Canon PowerShot SX60HS
- Canon PowerShot SX610 HS
- Canon PowerShot SX710 HS
- Canon PowerShot SX730 HS
- Canon XC10
- Canoni EOS 100D
- Canoo
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- capitals
- cappuccino
- Captagon
- captcha
- car
- car audio
- car sharing
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- Carberp
- CARBON (Spółka NewConnect)
- card sharing
- cardsharing
- Cargo Dragon
- Cargo Dragon 2
- Carl Froch
- Carl Zeiss
- Carla Bruni
- Carlos
- Carlos Slim (Meksykanin, najbogatszy człowiek świata)
- Carmat Heart
- Carnegie Hall
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- CASIS
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- Castle Bravo
- cat
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- Cave 3D
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- CD Projekt RED (dawniej Optimus SA - Spółka GPW)
- CDC
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- CeBIT (Targi komputerowe)
- cebit
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