Similar to ワールドクリーンアップデー

CID

Transcription factor Jun

Clang

Cystine–lactose–electrolyte-deficient agar

CLIÉ

CLS (command)

CMAC

Active-pixel sensor

CMYK color model

Coco

Code-excited linear prediction

Codeberg

Colorless green ideas sleep furiously

Common Desktop Environment

Compact Pro

Compound Document Format

Template:Computer algebra systems

Template:Computer sizes

Computer-mediated communication

Container Linux

ConTeXt