Chien Hsi-chieh (Chinese: 簡錫堦; Pe̍h-ōe-jī: Kán Sek-kai; born 15 March 1947) is a Taiwanese politician who served in the Legislative Yuan from 1996 to 2002 as a member of the Democratic Progressive Party.

[3][4] In 1999, he worked to pass stronger legislation protecting conscientious objection to military service on religious grounds after the Judicial Yuan ruled that such reasoning was not sufficient to refuse conscription.

[5] Chen spoke out against black gold politics later that year, citing data collected by the National Police Agency.

[20] The next year, Chien helped lead the Million Voices Against Corruption, President Chen Must Go campaign alongside Shih Ming-teh.

[25] Led by Chien, members of the Anti-Poverty Alliance held two hunger strikes in October 2011 to raise awareness of economic inequality in Taiwan.

[28] Chien's Anti-Poverty Alliance supported third force political candidates in the 2016 elections, the most successful of which belonged to the New Power Party.