Dr. Tan Cheng Bock (simplified Chinese: 陈清木; traditional Chinese: 陳清木; pinyin: Chén chīngmù; Pe̍h-ōe-jī: Tân Chheng-bo̍k; born 26 April 1940) is a Singaporean politician and medical practitioner. He was formerly a member of Singapore's governing People's Action Party (PAP) and a Member of Parliament from 1980 to 2006. He was the first non-Cabinet minister elected into the PAP Central Executive Committee (1987–96).