| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Jimmie | JIM-ee | English | ||
| Jimmy | JIM-ee | English | ||
| Jinny | JIN-ee | English | ||
| Jo | JO (English) | English, German, Dutch | ||
| Joan (1) | JON | English | ||
| Joandra | jo-AN-drə | English (Rare) | ||
| Joanie | JO-nee | English | ||
| Joann | JON, jo-AN | English | ||
| Joanna | jo-AN-ə (English), yaw-AHN-nah (Polish) | English, Polish, Biblical | ||
| Joanne | jo-AN (English), zho-AN (French) | English, French | ||
| Jobeth | JO-beth | English (Rare) | ||
| Joby | JO-bee | English (Rare) | ||
| Jocelin | JAHS-lin, JAHS-ə-lin | English (Rare) | ||
| Jocelyn | JAHS-lin (English), JAHS-ə-lin (English) | English, French | ||
| Jocosa | - | Medieval English |