Teh Cheang Wan (Chinese: 郑章远; pinyin: Zhèng Zhāngyuǎn; 3 March 1928 – 14 December 1986) was a Singaporean politician and architect who served as Minister for National Development between 1979 and 1986.

Teh was elected as the Member of Parliament (MP) for Geylang West SMC in January 1979, and held the seat until his death in December 1986.

[2] Prime Minister Lee Kuan Yew rejected the idea as being too drastic, but nine years after Teh's initial proposal, a chewing gum ban was passed into law.

[3] In November 1986, Prime Minister Lee Kuan Yew, approved an open investigation on his alleged corruption; however, the papers were issued to the Attorney-General on 11 December.

As an honourable oriental gentleman I feel it is only right that I should pay the highest penalty for my mistake.As a result of the suicide, the Attorney-General could not proceed with the charges, although Lee Kuan Yew responded with a condolence letter after ascertaining the cause of his death with Ministry of Health.

[7] The letter recognized his role in helping modernize the construction industry, speed up the building of expressways, and lessen traffic jams.

On 26 January 1987, Lee Kuan Yew delivered a parliamentary speech by reading out the suicide note addressed to him, written by Teh.