Koo may refer to:*Kōō, a Japanese era Koo Chen-fu (1917-2005), a Taiwanese businessman and diplomat Koo Chung, Korean American Christian singer-songwriter Koo Dae-Sung (1969-), a South Korean Major League Baseball player Koo De Tah, a New Zealand/Australian pop music band of the 1980s Koo Hsien-jung (1866–1937), Taiwanese businessman and politician Koo Hye Sun, a South Korean popular actress and singer Koo Ki-Lan (1977-), a South Korean volleyball player Koo Kien Keat (198… (More on Koo)