| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| JONG | - | Korean | ||
| JONG-SU | jong-soo | Korean | ||
| JONI (1) | JO-nee | English | ||
| JONI (2) | YO-nee | Finnish | ||
| JONIE | - | English | ||
| JONNA | YON-nah (Finnish) | Danish, Swedish, Finnish | ||
| JONNY | JAHN-ee | English | ||
| JONQUIL | JAHN-kwil | English (Rare) | ||
| JONTY | JAHN-tee | English (British) | ||
| JOOLS | JOOLZ | English | ||
| JOON | joon | Korean | ||
| JOONA | YO:-nah | Finnish | ||
| JOONAS | YO:-nahs | Finnish | ||
| JOON-HO | joon-ho | Korean | ||
| JOOP | YO:P | Dutch |