| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 1521 | Kathryn | English | Variant of Katherine. Pure. | F | |
| 1522 | Kathrynn | English | Variant of Katherine. Pure. | F | |
| 1523 | Kathy | English | This diminutive of Catherine or Kathleen is sometimes used as an independent name. Form of the Greek Catherine meaning pure. | F | |
| 1524 | Katie | English | Variant of Katherine. Pure. | F | |
| 1525 | Katilyn | English | English abbreviation of Katherine. Pure. | F | |
| 1526 | Katlin | English | Medieval English form of the Irish Caitlin. Pure. | F | |
| 1527 | Katlyn | English | Medieval English form of the Irish Caitlin. Pure. | F | |
| 1528 | Katlynn | English | Medieval English form of the Irish Caitlin. Pure. | F | |
| 1529 | Katlynne | English | Medieval English form of the Irish Caitlin. Pure. | F | |
| 1530 | Katrina | English | Variant of Katherine. Pure. | F | |
| 1531 | Kay | English | Keeper of the keys (when used as a stand-alone first name). Also a diminutive of any feminine name beginning with K. | F | |
| 1532 | Kayana | English | Variant of Kay: keeper of the keys; pure. | F | |
| 1533 | Kayanna | English | Variant of Kay: keeper of the keys; pure. | F | |
| 1534 | Kayce | English | Modern Kacie and variants are phonetic forms of the initials K. C. or variants of the Irish name Casey 'alert; vigorous. '. | F | |
| 1535 | Kaycee | English | Modern Kacie and variants are phonetic forms of the initials K. C. or variants of the Irish name Casey 'alert; vigorous. '. | F | |
| 1536 | Kayci | English | Modern Kacie and variants are phonetic forms of the initials K. C. or variants of the Irish name Casey 'alert; vigorous. '. | F | |
| 1537 | Kaycie | English | Modern Kacie and variants are phonetic forms of the initials K. C. or variants of the Irish name Casey 'alert; vigorous. '. | F | |
| 1538 | Kaye | English | Variant of Kay: keeper of the keys; pure. | F | |
| 1539 | Kayiyn | English | Variant of Katherine. Pure. | F | |
| 1540 | Kayla | English | Variants of Kay: keeper of the keys; pure. Famous bearer: Kayla is a character on daytime TV series 'Days of Our Lives. '. | F | |