| Joachim | | zho-a-KEEM (French), YO-ah-khim (German), yo-AH-khim (German), yaw-AH-kheem (Polish), JO-ə-kim (English) | French, German, Polish, Judeo-Christian Legend | |
| Jochen | | YO-khen | German | |
| Jochim | | YO-khim | German | |
| Jockel | | - | German | |
| Johann | | YO-hahn | German | |
| Johanna | | yo-HAH-nah (German), yo-HAHN-nah (Danish, Dutch), YO-hahn-nah (Finnish) | German, Swedish, Norwegian, Danish, Dutch, Hungarian, Finnish, Estonian, English, Late Roman | |
| Johannes | | yo-HAH-nes (German), yo-HAHN-nəs (Dutch, Danish), YO-hahn-nes (Finnish) | German, Dutch, Swedish, Norwegian, Danish, Finnish, Estonian, Late Roman | |
| 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 | |
| Jordanes | | - | Ancient Germanic | |
| Josef | | YO-zef (German) | German, Swedish, Norwegian, Danish, Czech | |
| Josefine | | yo-se-FEEN (Swedish), yo-ze-FEE-nə (German) | Swedish, Danish, Norwegian, German | |
| Joseph | | JO-səf (English), zho-ZEF (French), YO-zef (German) | English, French, German, Biblical | |
| Josepha | | yo-ZE-fah (German) | German (Archaic), English (Rare) | |