The Indonesia-Malaysia-Thailand Growth Triangle (IMT-GT) is a subregional cooperation initiative formed in 1993 by the governments of Indonesia, Malaysia, and Thailand to accelerate economic transformation in less developed provinces. The private sector has played and will continue to play a key role in promoting economic cooperation in IMT-GT.

Since it's formation, the IMT-GT has grown in geographic scope and activities to encompass more than 70 million people. It is now composed of 14 provinces in southern Thailand, 8 states of Peninsular Malaysia, and the 10 provinces of Sumatra in Indonesia.