INAONational → InternationalAstronomy
Indian National Astronomy Olympiad (INAO)
Organised by HBCSE TIFROfficial Website ↗
Second stage of IOAA selection. Theoretical astronomy and astrophysics. Top 4 represent India at International Olympiad on Astronomy and Astrophysics.
Eligibility
NSEA qualifiers only
Fee
Nil
Reg. Opens
Auto–Auto
Exam Date
Jan/Feb 2027
Level
National → International
Pathway Stage
National Entry
About this olympiad
Second stage of IOAA selection. Theoretical astronomy and astrophysics. Top 4 represent India at International Olympiad on Astronomy and Astrophysics.
The pathway
Stage 2 of 5 (NSEA
INAO
OCSC
PDC
IOAA)
How registration works
1
Automatic selection from NSEA
2
No separate registration.
How to prepare
Understand the syllabus
Focus on the core concepts of the Astronomy curriculum with a higher weightage on analytical problems.
Solve past papers
Practice with previous years' question papers to understand the exam pattern and marking scheme.
Notify Me
Get notified when INAO 2026 registration opens.
Quick Facts
TypeAstronomy Olympiad
International?Yes
Govt Recognized?Yes
Online Exam?No
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