| Baby Name | Meaning | Gender |
|---|
| Jarek | January | Male |
| Jaroslav | Myth Name | Male |
| Jenny | Diminutive Of Jane And Jennifer. | Female |
| Jesse | Wealthy | Male |
| Jiri | Farmer | Male |
| Jirina | Feminine Form Of Jirka (Farmer) | Female |
| Jirka | Farmer | Male |
| John | Jehovah Has Been Gracious: Has Shown Favor. In The Bible John The Baptist Baptized Christ In The Jordan River. Variants Have Been Created In Almost Every Language. | Male |
| Josef | Danish Form Of Joseph (He Adds) | Male |
| Josefa | Feminine Of Joseph. | Female |
| Joseph | God Will Multiply | Male |
| Jozka | God Will Multiply | Male |
| Julie | Youthful: Jove's Child. A Feminine Of Julian. | Female |
| Justina | | Female |
| Justyna | "Justice, Honest, Fair, Rightful According To A German Calendar, There Is A Name Day On September 26" | Female |
| Kamil | Perfect; One Of The Ninety-Nine Qualities Of God | Male |
| Kamila | Perfect | Female |
| Karel | Strong | Male |
| Karolina | Feminine Form Of Karl (Manly) | Female |
| Kate | English Abbreviation Of Katherine. Pure. | Female |
| Katherine | Pure. Used Since Third Century A.D. Early Latin Forms Katerina And Caterina Became Katharine And Catherine. French Cateline And English Catlyn Came Into Wider Use During Medieval Period When Variants Multiplied. | Female |
| Klara | "Clear, Bright" | Female |
| Konrad | Bold Adviser. | Male |
| Kovar | Smith | Male |
| Kristina | Variant Of Christiana. Follower Of Christ. | Female |