| Kimmel | Variant of Kimel, meaning follower of Christ |
| Kincade | Variant of Kincaid, meaning chief's son |
| Kinchen | Variant of Kinchen, meaning chief's son |
| Kindred | Related by blood or family ties |
| Kinkade | Variant of Kincaid, meaning chief's son |
| Kinsay | A variant of the name Kinsley. |
| Kinzay | A name meaning a golden treasure. |
| Kinzee | A name meaning a forest clearing. |
| Kinzie | A form of kinsey |
| Kippur | Day of atonement, a Jewish holiday |
| Kipton | Place name, possibly derived from Old English |
| Kiptyn | Variant of Kipton, possibly derived from Old English |
| Kirani | Variant of Kiran, meaning ray of light |
| Kirjath Arim | City of those who watch |
| Kirjath Baal | City of baal or of a ruler |
| Kirjath Sepher | City of letters or of the book |
| Kirke | A name meaning a church or a circle of light. |
| Kirosh | Variant of Kirush, meaning lord or king |
| Kissha | A name meaning a sweet kiss. |
| Kiyle | Narrow, a sound, a strait |
| Kizzie | A name meaning cinnamon or spice tree. |
| Kjetil | Norse name, meaning ruler of the people |
| Klarice | A name meaning clear and bright. |
| Klarina | A name meaning bright and famous. |
| Klark | A name meaning scholar or clerk. |
| Klaryce | A name meaning clear and bright. |
| Klein | German surname, meaning small or little |
| Kleiner | A surname meaning the small one. |
| Klementijna | Meaning mild, merciful, or gentle. |
| Klementina | A name meaning mild and merciful. |
| Klementos | Derived from the word for merciful. |
| Kline | Derived from German, means 'slender' or 'tall' |
| Klinten | Derived from the word for a cliff. |
| Knoah | A variation meaning peaceful rest. |
| Knowlton | English surname, means 'knowing town' or 'wise settlement' |
| Knowshon | Derived from Hebrew, means 'God's gift' or 'gift from God' |
| Koba | Japanese name, means 'small, strong, and brave' |
| Kobey | A name meaning turtle or tortoise. |
| Koden | Japanese name, means 'small, strong, and brave' |
| Koeraad | One who gives bold, wise advice. |