Tsai Hsien-tang (Chinese: 蔡憲棠; born 29 April 1977), formerly known as Tsai Hui-kai (Chinese: 蔡暉鎧), is a Taiwanese football (soccer) player. He usually plays as a defender or a defensive midfielder. During his service in Tatung F.C., he was voted the best defensive midfielder after the Chinese Taipei National Football League 2005 season. In 2008, Tsai changed his name to Tsai Hsien-tang. He became captain of the Chinese Taipei national football team during the 2008 AFC Challenge Cup.