Abstract: “This study aims at discussing the economic development of Thailand regarding the trickle-down effect. Theoretically, it is posited that the development will take place from the industrialization, which generates income or capital to the owner of capital first and then will transmit to the lower income people. This study finds out that this theory is true to certain extent and there is still some controversial issues in the case of Thailand.”

Keywords: Economic Development, International Development, Thailand, Public Poliy