| Tsai Wan-tsai | |
| Birth Date: | 1929 8, df=y |
| Birth Place: | Chikunan Town, Chikunan District, Shinchiku Prefecture, Japanese-era Taiwan (modern-day Zhunan, Miaoli) |
| Death Place: | Taipei, Taiwan |
| Nationality: | Taiwanese |
| Occupation: | Founder, Fubon Group |
| Children: | 4 |
| Office: | Member of the Legislative Yuan |
| Constituency: | Taipei Business |
| Term Start: | 1 February 1973 |
| Term End: | 31 January 1983 |
Tsai Wan-tsai (; 5 August 1929 – 5 October 2014) was a Taiwanese banker. Born in modern-day Miaoli, his birth name was 蔡萬財. He is one of the brothers of Tsai Wan-lin, and an uncle of Tsai Hong-tu. Tsai Wan-tsai was a member of the Legislative Yuan, the national parliament of Taiwan. He was also the founder of Fubon Group.[1] In June 2008, Forbes ranked him as the fourth richest of Taiwan, with a net worth of US$5.1 billion.[2]
He died at the age of 85 in 2014.[3] After his death, Fubon established the Tsai Wan-tsai Taiwan Contribution Award in his honor.[4] The company is now run by his sons Daniel Tsai and Richard Tsai.[5]