Sarach Yooyen (Thai: สารัช อยู่เย็น, rtgs: Sarat Yuyen, pronounced [sǎːrát jùːjēn]), simply known as Tang (Thai: ตัง, pronounced [tāŋ]) is a Thai professional football player who plays as a Midfielder for Thai Leagues 1 club Muangthong United and the Thailand national team.
He played for Thailand U23 in the 2011 Southeast Asian Games. In November 2013, he debuted for Thailand playing against Kuwait in the 2015 AFC Asian Cup qualification. He represented Thailand U23 in the 2014 Asian Games. Sarach is also part of Thailand’s squad in the 2014 AFF Suzuki Cup. In May 2015, he was called up by Thailand to play in the 2018 FIFA World Cup qualification (AFC) against Vietnam. He won the 2015 Southeast Asian Games with Thailand U23, which he captained.