| Juliana | | yuy-lee-AH-nah (Dutch), yoo-lee-AH-nah (German), joo-lee-AHN-ə (English) | Dutch, German, English, Spanish, Portuguese, Ancient Roman | |
| Julie | | zhuy-LEE (French), YOO-lee-e (Danish), YUW-lye (Czech), JOO-lee (English) | French, Danish, Norwegian, Czech, English, German, Dutch, Spanish, Portuguese | |
| Julinha | | - | Portuguese | |
| Julio | | HOO-lyo (Spanish), ZHOO-lyoo (Portuguese) | Spanish, Portuguese | |
| Jun | | joon (Korean) | Chinese, Korean | |
| Junko | | joon-ko | Japanese | |
| Juro (2) | | joo:-ṙo: | Japanese | |
| Jurou | | joo:-ṙo: | Japanese | |
| Juvela | | yoo-VE-lah | Esperanto | |
| Jyoti | | - | Indian, Hindi, Marathi, Bengali, Assamese, Nepali | |
| Kadek | | - | Indonesian, Balinese | |
| Kadri | | KAHD-rree | Estonian | |
| Kaede | | kah-e-de | Japanese | |
| Kaia | | - | Norwegian, Estonian | |
| Kaisa | | KIE-sah (Finnish) | Finnish, Estonian | |