| Tsay Yow-tayn | |
| Full Name: | 蔡 侑潭, Pinyin: Cài Yòu-tán |
| Nationality: | Taiwanese |
| Sport: | Judo |
| Birth Date: | 14 October 1968 |
Tsay Yow-tayn (born 14 October 1968) is a Taiwanese judoka. He competed in the men's half-middleweight event at the 1988 Summer Olympics.[1]