| Name | Meaning | Gender | Origin |
|---|
| Jenny | Diminutive of Jane and Jennifer.
| Female | English |
| Jessica | God's grace | Female | Hebrew |
| Jigsaw | | Unisex | Hebrew |
| Jinx | Charm, Spell | Female | Latin |
| Josephine | God will increase | Female | |
| Joy | From Joyce - Gay and joyful | Female | Word |
| Juniper | Juniper Tree | Female | English |
| Katerina | Blessed, Pure, Holy | Unisex | Czechoslovakian |
| Katrina | Greek, pure | Female | |
| Khaki | Light olive brown colour | Unisex | |
| Kiki | From Enriqueta - Pet | Female | |
| Kiki | From Enriqueta - Pet | Female | |
| Kitkat | | Unisex | Hebrew |
| Lady | A female title of nobility. | Female | |
| Lexy | Greek, feminine form of Alexander, defending men | Female | English |
| Lisa | Devoted to God
| Female | English |
| Lotti | | Female | |
| Maddie | Of Magdala | Female | English |
| Maddy | Of Magdala, Tower | Unisex | English |
| Maggie | Abbreviation of Margaret. A pearl.
| Female | English |
| Magic | Possessing qualities that produce baffling effects | Male | Word |
| Magic | Possessing qualities that produce baffling effects | Male | Word |
| Marble | | Unisex | |
| Maya | Abbreviation of Amalia: variant of Maia.
| Female | Hebrew |
| Medea | ruling; middle child | Female | Greek |