1. SOF - Science Olympiad foundation.

1. NCO -National Cyber Olympiad.
   
2. NSO -National Science Olympiad.
   
3. IMO -International Maths Olympiad.
   
4. IEO  -International English Olympiad.

For further details Check www.sofworld.org/

2.RMO - Regional Maths Olympiad

For further details Check  www.isical.ac.in/~rmo/

3.MOEMS

The MOEMS India Junior Math Olympiad (Standards 4 - 8)
For further details Check  www.moems.in/

4.UCO - Unified cyber Olympiad.

For further details check  www.unifiedcouncil.com

5.AIMED - Association for improvement of maths education.
For further details Check  http://aimedvijayawada.com