Tsai Wan-lin (蔡萬霖; November 10, 1924 – September 27, 2004) was a Taiwanese businessman. He was born into a poor farmer's family in Miaoli, and started out in Taipei by selling vegetables and soybeans with his brothers as a child. Tsai did not attend college.
Tsai was first listed by Forbes as a billionaire in 1987. At the peak of his wealth in 1996, Tsai was considered to be the fifth richest person in the world, with a family net worth of US$12.2 billion. At the time of his death in 2004, he was the richest man in Taiwan. He founded the Lin Yuan Group, a large banking and insurance group.