Cognomen Bolongi (Bolongi 
) , worldwide, is a rare surname. The family name Bolongi is characteristic of the Democratic Republic of the Congo, where it is a rare surname, New Zealand, where it is a very rare surname, and Germany, where it is an extremely rare surname. Not in comparison with a country's population, this name is the most popular in the Democratic Republic of the Congo, Germany, and the United Kingdom.
| VARIANT | COUNTRY |
|---|---|
| Bolongi | United Kingdom, Germany, New Zealand, Democratic Republic of the Congo |