Dear Sirs,
I want to change the name of my child in the records of birth registration. What is the procedure and what I should do?

It depends on where you live in...
Generally you can change your child's name on your U.S. Department of State issued birth certificates./if you are a U.S. resident/

One must obtain a legal name change (original or certified copy) from the court of the county for which they reside.