| Jonathan | | JAHN-ə-thən (English), YO-nah-tahn (German) | English, German, Swedish, Norwegian, Danish, Dutch, French, Biblical | |
| Joram | | - | Biblical | |
| Josaphat | | - | Biblical | |
| Joseph | | JO-səf (English), zho-ZEF (French), YO-zef (German) | English, French, German, Biblical | |
| Joses | | JO-seez (English) | Biblical | |
| Joshua | | JAH-shə-wə (English), JAW-shwə (English) | English, Biblical | |
| Josiah | | jo-SIE-ə (English) | Biblical, English | |
| Josias | | - | Biblical | |
| Jotham | | JO-thəm (English) | Biblical | |
| Jubal | | JOO-bəl (English) | Biblical | |
| Judah | | JOO-də (English) | Biblical, Jewish | |
| Judas | | JOO-dəs (English) | Biblical | |
| Jude (1) | | JOOD (English) | English, Biblical | |
| Judith | | JOO-dith (English), zhoo-DEET (French), YOO-dit (German) | English, Jewish, French, German, Spanish, Biblical | |
| Junia | | - | Biblical, Ancient Roman | |