Family name Ronthi (Ronthi 
) , throughout the world, is a very rare surname. The family name Ronthi is characteristic of Norway, where it is a rare surname, Indonesia, where it is a very rare surname, and the United States, where it is an extremely rare surname. Much less frequently, Ronthi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Ronthi | Norway, South Africa, Indonesia, United States, India |
| noralf ronthi Norwegian musician (b. 1967) |
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