Tsai Shu-min (Chinese: 蔡 淑敏; pinyin: Cài Shūmǐn; born February 4, 1981 in Changhua County) is a retired Taiwanese swimmer, who specialized in sprint and middle-distance freestyle, but also competed in backstroke and in individual medley. She represented Chinese Taipei in two editions of the Olympic Games (1996 and 2000), and later earned four medals in swimming, including her first ever gold, at the 1998 Asian Games in Bangkok, Thailand.