| Honorific-Prefix: | The Honourable |
| Cheng Yiu-tong | |
| Native Name Lang: | zh-hk |
| Honorific-Suffix: | GBM, JP |
| Nationality: | Chinese, Hong Kong |
| Birth Date: | 14 October 1948 |
| Birth Place: | British Hong Kong |
| Office: | Non-official Member of the Executive Council of Hong Kong |
| Term Start: | 1 July 2002 |
| Term End: | 30 June 2017 |
| Successor: | Wong Kwok-kin |
| President: | Tung Chee Hwa Donald Tsang Leung Chun-ying |
| Office1: | HK deputy to the NPC of the PRC |
| Term Start1: | 17 March 2003 |
| 1Blankname1: | Congress |
| 1Namedata1: | 10th National People's Congress 11th National People's Congress |
| Office2: | Member of the Legislative Council of Hong Kong |
| Constituency2: | Labour |
| Majority2: | 1995 684 |
| Term Start2: | 17 September 1995 |
| Term End2: | 30 June 1998 |
| Party: | Hong Kong Federation of Trade Unions |
| Alma Mater: | Raimondi College HKU SPACE Jinan University |
Cheng Yiu-tong GBM, JP (; born 14 October 1948 in Hong Kong) is a non-official member of the Executive Council of Hong Kong. He was appointed as the president of the Hong Kong Federation of Trade Unions in April 2000.[1] He is also the Hong Kong delegate to the National People's Congress of the People's Republic of China.
On 1 July 2015, Cheng was awarded the Grand Bauhinia Medal (GBM), the highest honour of the SAR, in recognition of his contributions to the formulation of labour policies and promotion labour relations in Hong Kong with pragmatic and reasonable approach which helped maintaining the business-friendly environment, and also promoting charity and social services to disadvantaged group and enhancing cooperation with the Mainland.[2]