Olympiad Exams are directed by the Science Olympiad Foundation (a non-benefit association situated in New Delhi, India) to advance science, arithmetic, general learning, early on PC training and English language abilities among younger students.
know some Olympiad in India.
1.National Cyber Olympiad
2.National Science Olympiad
3.International Mathematics Olympiad
4.International English Olympiad
5.International General Knowledge Olympiad
Hope my answer will help you..