| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Justin | JUS-tin (English), zhoo-STEN (French) | English, French, Slovene | ||
| Justina | jus-TEE-nə (English) | English, Slovene, Czech, Lithuanian, Late Roman | ||
| Justine | zhuy-STEEN (French), jus-TEEN (English) | French, English, Dutch, German | ||
| Justy | JUS-tee | English | ||
| Kacey | KAY-see | English (Modern) | ||
| Kacie | KAY-see | English (Modern) | ||
| Kade | KAYD | English (Modern) | ||
| Kaden | KAY-dən | English (Modern) | ||
| Kae | KAY | English (Rare) | ||
| Kaeden | KAY-dən | English (Modern) | ||
| Kaelea | KAY-lee | English (Rare) | ||
| Kaelee | KAY-lee | English (Rare) | ||
| Kaelyn | KAY-lin | English (Modern) | ||
| Kaety | KAY-tee | English (Rare) | ||
| Kaiden | KAY-dən | English (Modern) |