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).

The 10th SAO took place on 11 March 2023, Saturday. The results of the 10th SAO have been released at the SAO Hall of Fame. Congratulations to all prize winners!

IOAA 2023

Congratulations to Team Singapore for their excellent performance at the 16th IOAA at Chorzow, Poland! The team bagged 1 Gold, 3 Silver and 1 Bronze at the 16th IOAA.

A photograph of Team Singapore at the 16th IOAA 2023.


Syllabus and Resources

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:

SAO Past Olympiad Papers

Additional resources for the SAO can be found here:

Additional SAO Resources



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) was 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