| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 1401 | Joya | English | Rejoicing. | F | |
| 1402 | Joyann | English | Rejoicing. | F | |
| 1403 | Joyanna | English | Rejoicing. | F | |
| 1404 | Joyanne | English | Rejoicing. | F | |
| 1405 | Joyce | English | Cheerful. Merry. From the name of 7th-century hermit St Judoc (St Judocus or St Josse), who was the son of a Breton king. In medieval England, this name was given to children of either gender, although it is now used solely as a feminine name. | F | |
| 1406 | Joyceanne | English | Cheerful; merry. | F | |
| 1407 | Joycelyn | English | Cheerful; merry. | F | |
| 1408 | Joycelynn | English | Cheerful; merry. | F | |
| 1409 | Joyelle | English | Rejoicing. | F | |
| 1410 | Jozlyn | English | Medieval male name adopted as a feminine name. | F | |
| 1411 | June | English | Derived from the name of the sixth month of the year. Giving children month names has only become popular in the 20th century. | F | |
| 1412 | Justeene | English | Just; upright. Feminine of Justin. | F | |
| 1413 | Justene | English | Just; upright. Feminine of Justin. | F | |
| 1414 | Justine | English | Just; upright. Feminine of Justin. | F | |
| 1415 | Jyl | English | Abbreviation of Jillian or Gillian. Jove's child. | F | |
| 1416 | Jyll | English | Abbreviation of Jillian or Gillian. Jove's child. | F | |
| 1417 | Jyllina | English | Jove's child. Variant of Gillian from the masculine Julian. | F | |
| 1418 | K.C. | English | Nickname for one with the initials K. C. Also a variant of the Irish name Casey, meaning: alert, vigorous. | F | |
| 1419 | Kacee | English | A phonetic form of the initials K. C. Also a variant of the Irish name Casey: alert; vigorous. | F | |
| 1420 | Kacey | English | Form of the Irish name Casey; also a creation based on the initials K. C. | F | |