| JokŪBas | | - | Lithuanian | |
| Jokum | | - | Danish | |
| JolÁN | | - | Hungarian | |
| JolÁNka | | - | Hungarian (Rare) | |
| Jolanda | | yo-LAHN-dah (Dutch, Italian) | Dutch, Slovene, Croatian, Italian | |
| Jolanta | | yaw-LAHN-tah (Polish) | Polish, Lithuanian | |
| Jon (1) | | YOON (Swedish, Norwegian), YON (Danish, Basque) | Swedish, Norwegian, Danish, Basque | |
| Jonas (1) | | YO-nus | Lithuanian | |
| Jonas (2) | | YO-nahs (German), JO-nəs (English) | Swedish, Norwegian, Danish, German, Dutch, Biblical | |
| Jonatan | | YO-nah-tahn (German) | Spanish, Swedish, Norwegian, Danish, German | |
| Jonathan | | JAHN-ə-thən (English), YO-nah-tahn (German) | English, German, Swedish, Norwegian, Danish, Dutch, French, Biblical | |
| Jone (2) | | - | Norwegian | |
| Jong | | - | Korean | |
| Jong-Su | | jong-soo | Korean | |
| Jonna | | YON-nah (Finnish) | Danish, Swedish, Finnish | |