| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Jiro | jee-ṙo: | Japanese | ||
| Jirou | jee-ṙo: | Japanese | ||
| Junko | joon-ko | Japanese | ||
| Juro (2) | joo:-ṙo: | Japanese | ||
| Jurou | joo:-ṙo: | Japanese | ||
| Kaede | kah-e-de | Japanese | ||
| Kaito | kah-ee-to | Japanese | ||
| Kanon | kah-non | Japanese | ||
| Kaori | kah-o-ṙee | Japanese | ||
| Kaoru | kah-o-ṙoo | Japanese | ||
| Kasumi | kah-soo-mee | Japanese | ||
| Katashi | kah-tah-shee | Japanese | ||
| Katsu | kah-tsoo | Japanese | ||
| Katsuo | kah-tsoo-o | Japanese | ||
| Katsuro | kah-tsoo-ṙo: | Japanese |