Tien Hung-mao (Chinese: 田弘茂; pinyin: Tián Hóngmào; Wade–Giles: Tʻien2 Hung2-mao4; born 7 November 1938) is a Taiwanese politician.

He then went to the United States to pursue graduate studies at the University of Wisconsin–Madison, where he earned a Master of Arts (M.A.)

[4][5] After he moved back to Taiwan, Lee Teng-hui had asked him twice in the 1990s to serve in the Executive Yuan Council, but each time he refused; reportedly, the requirement that he renounce U.S. citizenship was a major barrier.

[4] He eventually accepted Chen Shui-bian's offer to become Minister of Foreign Affairs, and renounced his U.S. citizenship on 11 May, eight days before taking office.

[5] After his term ended, he took up a new post as the head of Taipei Representative Office in the U.K.[6] He resigned the position in 2004,[7] and later led the Institute of National Policy Research.