Oon Chiew Seng | |
|---|---|
 Oon c. 2014 | |
| Born | 1916 |
| Died | 31 March 2022 (aged 106) Singapore |
| Citizenship | Singapore |
| Education | Medical College of Singapore |
| Occupation | Physician |
| Years active | 1955–1991 |
Oon Chiew Seng (1916 – 31 March 2022) was a Singaporean physician, known for being one of the country's first gynaecologists and obstetricians. Born in Penang, she was educated in both India and Singapore and worked at Kandang Kerbau Hospital before setting up her private practice.