| Joakim | | YO-ah-kim (Swedish), YO-ah-keem (Finnish) | Swedish, Norwegian, Danish, Finnish, Serbian, Macedonian | |
| Joan (2) | | joo-AHN (Catalan), zhoo-AHN (Catalan) | Catalan, Occitan | |
| Joana | | - | Portuguese, Catalan | |
| Joandra | | jo-AN-drə | English (Rare) | |
| Joanna | | jo-AN-ə (English), yaw-AHN-nah (Polish) | English, Polish, Biblical | |
| Joannes | | - | Late Roman | |
| JoaquÍN | | hwah-KEEN | Spanish | |
| Joaquim | | - | Portuguese, Catalan | |
| Joaquima | | - | Catalan | |
| Joaquina | | hwah-KEE-nah | Spanish | |
| Joash | | JO-ash (English) | Biblical | |
| Job | | JOB (English), YAWP (Dutch) | Biblical, Dutch | |
| Jobeth | | JO-beth | English (Rare) | |
| Joby | | JO-bee | English (Rare) | |
| Jocasta | | jo-KAS-tə (English) | Greek Mythology (Latinized) | |