Kerstin Ong Jing Rong (Chinese: çÂÂæµÂèÂÂ; born June 8, 1997) is a Singaporean athlete who specialises in the 100 metres hurdles. She holds the national record for the 100 metres hurdles, breaking it first at the 2025 Malaysian Open with a time of 13.86s. She made her Southeast Asian Games debut in 2025, clocking 13.47s in the heats of the 100 metres hurdles, and 13.85s in the final. However, both times were not recognised by the Singapore National Olympic Council as technical issues were reported with the timing system.
Ong joined the Singapore Sports School through "a lucky stumble" - she wanted to skip her Chinese tuition class, and it just so happened that the Singapore Sports School direct school admission trials were happening on that day. "I went competitively into this sport because I joined the Singapore Sports School, and my passion and discipline grew there," she recalled.
2025 SEA Games (Thailand)
2025 Singapore Open
2025 Malaysian Open
2023 Johor Athletics Open
2019 Singapore Open
2018 Singapore Open
2015