10th Singapore Astronomy Olympiad 2023

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).

Details of the upcoming SAO are as follows:

  • Date: 11 March 2023, Saturday
  • Time: 09:00 to 13:00
  • Venue: Raffles Institution (Year 5-6 Campus), Lecture Theatre 2

Registration commences on 7 January 2023 and closes on 25 February 2023. 


The SAO is modelled after the IOAA. Details of the syllabus can be found here: 

IOAA Syllabus

Previous questions and solutions for the SAO can be found here.

Additional resources for the SAO can be found here.


The 4-hour test comprises these components:

1. Multiple Choice Questions

2. Short & Long Answer Questions

3. Data Analysis 

4. Practical Astronomy 


The 16th International Olympiad on Astronomy and Astrophysics (IOAA) will be hosted at Chorzow in Poland from 10th August to 20th August 2023.

The top 5 Gold medalists in the SAO will represent Singapore in the IOAA.

Find out more about the IOAA by visiting the official website below:

IOAA Homepage

Hall of Fame

For past SAO winners,

Click here


For past IOAA winners,

Click Here