| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Juris | - | Latvian | ||
| Kaspars | - | Latvian | ||
| Kirils | - | Latvian | ||
| KlĀRa | - | Latvian | ||
| Klaudijs | - | Latvian | ||
| KristĪNa | - | Latvian | ||
| KristĪNe | - | Latvian | ||
| Kristaps | - | Latvian | ||
| KristiĀNa | - | Latvian | ||
| KristiĀNs | - | Latvian | ||
| LŪCija | - | Latvian | ||
| Laima | - | Lithuanian, Latvian, Baltic Mythology | ||
| Larisa | lah-REE-sah (Russian) | Russian, Ukrainian, Romanian, Latvian, Greek Mythology | ||
| Lauma | - | Latvian, Baltic Mythology | ||
| Lilija | - | Lithuanian, Latvian |