12th Singapore Astronomy Olympiad 2025

The Singapore Astronomy Olympiad (SAO) is a national competition on Astronomy and Astrophysics organised with the intent to select candidates to represent Singapore in the International Olympiad on Astronomy and Astrophysics (IOAA).

Results of the 12th SAO

This year, the SAO saw a record number of 233 participants. The results of the 12th SAO 2025 have officially released, and the list of prize winners may be found at the SAO Hall of Fame (click here to view the full list of prize winners). Congratulations to all prize winners!

All prize winners have also been notified via email regarding the details of the prize presentation ceremony – please look out for an email from the organisers!

We hope that this year’s edition of the SAO has been a fruitful learning experience for all participants, and we hope to see you at next year’s SAO!

IOAA Selection

The top five students from the SAO will be invited to represent Singapore at the 18th IOAA in Mumbai, India. Please note that, according to the organisers of the IOAA, only Singaporean citizens and permanent residents are eligible to represent the country at the event.

Singapore has a long history of participation in the IOAA. We have won awards at every edition we participated in and bagged 2 Gold and 3 Silver medals at the latest edition in 2024.

IOAA 2024

Congratulations to Team Singapore for their excellent performance at the recently-concluded 17th IOAA at Vassouras, Brazil!

This year, Leng Kane Kiat, Eng Cheng Le, and Lim Cheng Ian from NUS High School of Mathematics and Science, and Hilary Chee and Teo Kai Wen from Raffles Institution represented Singapore at the 17th IOAA.

Under the mentorship of team leaders, Mdm Geraldine Tan and Mr Yuen Xiang Hao, and the coaches (Brendan Lim, Huang Zehan, Ting Jun Rui, Liu Hao, Lim Kia Yee, and Wang Ming Chuan), the team bagged 2 Gold and 3 Silver Medals at the 17th IOAA.

Photo credit: Mr Yuen Xiang Hao, NUS High School of Mathematics and Science