| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 181 | Krystynka | Polish | Christian. | F | |
| 182 | Krzysztof | Polish | Polish form of Christopher 'Christ bearer'. | M | |
| 183 | Kunegundy | Polish | Name of a queen. | F | |
| 184 | Kunigunde | Polish | Name of a queen. | F | |
| 185 | Laiurenty | Polish | Polish form of Lawrence 'laurel'. | M | |
| 186 | Lechsinska | Polish | Wood nymph. | F | |
| 187 | Lidia | Polish | From Lydia. | F | |
| 188 | Likla | Polish | Famous battle maid. | F | |
| 189 | Lila | Polish | Of the people. | F | |
| 190 | Liuz | Polish | Light. | M | |
| 191 | Lodoiska | Polish | Famous battle maid. | F | |
| 192 | Lubomir | Polish | Loves peace. | M | |
| 193 | Luboslaw | Polish | Loves glory. | M | |
| 194 | Lucja | Polish | Polish form of Lucille. Bright. | F | |
| 195 | Lucyna | Polish | Polish form of Lucille. Bright. | F | |
| 196 | Ludka | Polish | Famous battle maid. | F | |
| 197 | Ludoslaw | Polish | Loves glory. | M | |
| 198 | Ludwik | Polish | Renowned warrior. | M | |
| 199 | Luisa | Polish | Famous battle maid. | F | |
| 200 | Lujan | Polish | Polish form of Lucian 'lright'. | M | |