Green Key

Green Key may refer to:
 * Green Key International, an eco-label based in Denmark
 * Green Key Global, an industry-led eco-label based in Canada
 * Green Key Books, a company who acquired the publishing rights to God's Word Translation
 * Green Key Society, a student group at Dartmouth College, Hanover, New Hampshire, US
 * Green Key Weekend, a Dartmouth College tradition
 * Green Key Technologies, a major telephony key system used in financial trading turrets