Green box may refer to:
Green box (container), a large metal container, designed and utilised for free public disposal and recycling of electronic waste. Green box (phreaking), a device used to manipulate the coin collection mechanism of payphones Green box (WTO agreement), a class of subsidies regulated by the international Agreement on Agriculture The Green Box, Marcel Duchamp's published notes on his work The Bride Stripped Bare By Her Bachelors, Even A Flash flood watch
See also Green bin, a large, movable, rigid plastic or metal container used to collect biodegradable waste or compostable materials