Chai Trong-rong, Taiwanese educator and politician (b. 1935)
Chai Trong-rong (Chinese: 蔡同榮; pinyin: Cài Tóngróng; Wade–Giles: Ts‘ài4 T‘ung2-jung2; Pe̍h-ōe-jī: Chhòa Tông-êng; June 13, 1935 – January 11, 2014), sometimes known in English as Trong Chai, was a Taiwanese politician.

Born in Japanese-era Taiwan, Chai earned his master's and doctorate degrees in the United States. He was a pro-democracy advocate and founded the Association for a Plebiscite (Chinese: 公民投票促進會; pinyin: Gōngmín Tóupiaò Cùjìnhùi) and Formosa Television.A member of the Democratic Progressive Party (DPP), Chai was elected a national-level legislator multiple times, serving in the Legislative Yuan from 1993 to 1996 and again from 1997 to 2012. He took part in three of the DPP chairmanship elections. However, he lost all three of the elections.