Tseng Yung-fu (Chinese: 曾勇夫; pinyin: Zēng Yǒngfū; born 12 January 1943) is a Taiwanese politician.

[1][2][3] Tseng had served as chief prosecutor before in Taipei, Tainan, Taitung, Yunlin, Chiayi and Kinmen.

He promised that every execution shall be carried out according to the law, when his predecessor Wang Ching-feng resigned from the ministerial post due to her disagreement regarding capital punishment in Taiwan.

[5] Third execution order signed by Tseng for six inmates held on 21 December 2012, which are Zeng Si-ru, Hung Ming-tsung, Huang Hsien-cheng, Chen Chin-huo, Kuang Te-chiang and Tai Te-ying.

[8][9] In March 2012, Tseng granted former ROC President Chen Shui-bian a leave from Taipei Prison to undergo medical checkup at Taoyuan General Hospital in Taoyuan after meeting with legislators from Democratic Progressive Party and Taiwan Solidarity Union.