| Welsh baby names begining from K |
| Kai |
 | Keeper of the keys. Form of Kay. |
| Kane |
 | Beautiful. Popular as a first name in Australia. |
| Kay |
| Fiery. |
| Kei |
| Legendary son of Kynyr. |
| Keith |
| Dwells in the woods. |
| Kelemon |
 | Legendary daughter of Kei. |
| Kelli |
| From the wood. |
| Kelyn |
| Legendary son of Caw. |
| Ken |
| Clear water. |
| Kendric |
| Royal chieftain. Jehovah has remembered. Surname. |
| Kendrick |
| Royal chieftain. Surname. |
| Kendrik |
| Royal chieftain. Surname. |
| Kendrix |
| Royal chieftain. Surname. |
| Kenn |
| Clear water. |
| Kenrick |
| Royal chieftain. Surname. |
| Kenrik |
| Royal chieftain. Surname. |
| Kent |
| White. |
| Kenyon |
| From Ennion's mound. |
| Kevyn |
| From the ridge. |
| Kian |
| Legendary father of Lugh. |
| Kigva |
| Legendary wife of partholon's son. |
| Kilydd |
| Legendary son of Kelyddon. |
| Kim |
| Diminutive of Kimball: Chief of war. Leader. |
| Kimball |
| Warrior chief. |
| Kimble |
| Warrior chief. |
| Kraig |
| Variant of Craig: Rock. |
| Kyledyr |
| Legendary son of Nwython. |
| Kynan |
| Chief. |
| KyndMryn |
| Legendary son of Ermid. |
| Kynedyr |
| Legendary son of Hetwn. |
| Kynlas |
| Legendary son of Kynan. |
| Kynon |
| Legendary son of CIydno. |
| Kynwal |
| Legendary son of Caw. |
| Kynwyl |
| Name of a saint. |
| Kywrkh |
| Legendary son of Cleddyv. |
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