| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Jez | JEZ | English (British) | ||
| Jezza | JEZ-ə | English (British) | ||
| Jill | JIL | English | ||
| Jillian | JIL-ee-ən | English | ||
| Jillie | JIL-ee | English | ||
| Jilly | JIL-ee | English | ||
| Jim | JIM | English | ||
| Jimi | JIM-ee | English | ||
| 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 |