Last name Kaponii (Kaponii 
) , in the entire world, is a rare cognomen. The family name Kaponii is characteristic of Latin America and the Caribbean, particularly the Dominican Republic, where it is quite a rare surname, Colombia, where it is a very rare surname, and Chile.
| VARIANT | COUNTRY |
|---|---|
| Kaponii | Chile, United States, Mexico, Dominican Republic, Colombia |