What nationality is the last name chelaru?

The last name "Chelaru" is most likely of Indian origin, specifically from the Telugu language spoken in the southern Indian states of Andhra Pradesh and Telangana.

It's important to note that without further context or information about a specific individual with this surname, it's impossible to definitively determine their nationality. It's possible that someone with the last name "Chelaru" could be of Indian descent but born and raised elsewhere, leading to a different nationality.