Koichi Hamada (浜田 宏一, Hamada Kōichi, born 8 January 1936 in Tokyo[2]) is the Tuntex Professor Emeritus of Economics at Yale University,[3] where he specializes in the Japanese economy and international economics.

[4] Hamada also serves as economic adviser to Japan's Prime Minister Shinzo Abe[5] and is credited as one of the key architects of Abenomics, economic policies based upon "three arrows" of monetary easing, fiscal stimulus and structural reform.

[6] From January 2001 to July 2002, Hamada served as the first president of the Economic and Social Research Institute of the Cabinet Office of the Japanese Government.

[7] He passed the National Law Bar Examination (Shihoshiken) of Japan in 1957, L.L.B.

[2] His fields of interest are Labor economics, Macroeconomics, Applied Econometrics, School choice, The Black-White wealth gap, Wage determination, Economic links among relatives, Immigration, and Changes in labor force quality.