Last name Kirthi (Kirthi 
) , in the world, is quite a rare family name. The last name Kirthi is characteristic of India, where it is a rare surname, Indonesia, where it is a very rare surname, and Malaysia. Not in comparison with a country's population, the name is most common in India, Indonesia, and the United States. More frequently, Kirthi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Kirthi | India, United Arab Emirates, United States, Sri Lanka, Indonesia |