Sra Kacaw (born 16 December 1956), also known by the name Jeng Tian-tsair (Chinese: 鄭天財; pinyin: Zhèng Tiāncái), is an Amis Taiwanese lawyer and politician.

Sra Kacaw, an Amis, was born in Hualien County and studied law at National Taiwan University.

Shortly after taking office for his first term, Sra Kacaw joined residents of Xiulin, Hualien to protest Taipower's construction of a well and nuclear waste storage site in the area.

[5] He coauthored an amendment to the Mountain Slope Conservation and Utilization Act in 2012 that led to criticism from many aboriginal rights groups.

[6] Later that year, Sra Kacaw criticized the Executive Yuan's proposal to help Taiwanese businesses hire foreign workers, stating that the policy would lessen job opportunities for aborigines.