| Honorific Prefix: | The Honourable |
| Rachel Ong | |
| Native Name Lang: | zh |
| Birth Date: | 1972[1] |
| Birth Place: | Singapore |
| Constituency Mp1: | West Coast GRC (Telok Blangah) |
| Term Start1: | 10 July 2020 |
| Predecessor1: | Lim Hng Kiang (PAP) |
| Majority1: | 4,662 (3.36%) |
| Party: | People's Action Party |
| Alma Mater: | INSEAD Tsinghua University |
Rachel Ong Sin Yen (; born 1972) is a Singaporean politician and businesswoman. A member of the governing People's Action Party (PAP), she has been the Member of Parliament (MP) representing the Telok Blangah division of West Coast GRC since 2020.
Ong holds a Master of Business Administration degree from INSEAD and Tsinghua University.[2]
Ong is the founder of ROHEI, a learning and consulting partner operating in Singapore.[2] [3] She is also patron of Trybe, a registered charity aimed at helping youths.[4] In 2021, Ong began to chair The Purple Parade, Singapore's largest movement to support inclusion and celebrate abilities of Persons with Disabilities.[5]
Ong made her political debut in the 2020 general election when she joined a five-member People's Action Party (PAP) team contesting in West Coast GRC.[6] On 10 July 2020, the PAP team in West Coast GRC won with 51.68% of the vote against the Progress Singapore Party,[7] so Ong became a Member of Parliament representing the Telok Blangah ward of West Coast GRC.
Ong serves in the Government Parliamentary Committees for Defence, Foreign Affairs and Manpower.[8] She is also a member of the Estimates Committee in Parliament,[9] an adviser to the Telok Blangah grassroots organisations, and vice chairperson of the West Coast Town Council.[10] She is also the co-Chairperson of the PAP Mental Health Group launched in Oct 2024. [11]