The National Institute of Green Technology (NIGT), formerly known as Green Technology Center (GTC), is one of the 25 government funded science and technology institutes in Korea. NIGT is established based upon the Article 32-2 (Affiliated Institute), Articles of Association, National Research Council of Science & Technology. The objectives of NIGT are to support establishment of R&D policies for Green Technology and to support global green technology cooperation. With a mission to respond to the climate crisis and contribute to green growth, NIGT serves as a think tank for inclusive and innovative global growth, providing support for the establishment of national green technology policies and global technology cooperation.

NIGT's priority areas include developing strategies for leading global climate technology and policy research. For the global climate technology cooperation, the institute research on a full-cycle model for climate technology development and deployment, as well as the transfer and diffusion of technology to developing countries. Through the policy research arm, the institute supports planning and implementation of technology policies and development and operation of technology integrated information system.