Thomas Ong Thian Chai (Chinese: 王沺裁; pinyin: Wáng Tiáncái, born 1 February 1969) is a Singaporean actor, television host and businessman who films on an ad-hoc basis. An irregular employee of MediaCorp, he has joined and left the company several times to concentrate on other projects. More recently, he returned to MediaCorp for the fourth time and signed a three-year contract in early 2012.