| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 41 | Krany | Czechoslovakian | Short. | M | |
| 42 | Krejci | Czechoslovakian | Tailor. | M | |
| 43 | Krocka | Czechoslovakian | Moves slowly. | M | |
| 44 | Kubas | Czechoslovakian | Supplanter. | M | |
| 45 | Kusner | Czechoslovakian | Furrier. | M | |
| 46 | Laco | Czechoslovakian | Famous ruler. | M | |
| 47 | Lev | Czechoslovakian | Lion. | M | |
| 48 | Lojza | Czechoslovakian | Famous warrior. | M | |
| 49 | Lomsky | Czechoslovakian | From Prague. | M | |
| 50 | Lomy | Czechoslovakian | From Prague. | M | |
| 51 | Magdalena | Czechoslovakian | Woman from Magdala. The biblical Mary Magdalene came from Magdala area near the sea of Galilee. | M | |
| 52 | Marek | Czechoslovakian | Of Mars; the god of war. | M | |
| 53 | Martinek | Czechoslovakian | Warring. | M | |
| 54 | Miloslsv | Czechoslovakian | Loves g)ory. | M | |
| 55 | Mirek | Czechoslovakian | Pesce. | M | |
| 56 | Miroslsv | Czechoslovakian | Peaceful glory. | M | |
| 57 | Mlynar | Czechoslovakian | Miller. | M | |
| 58 | Molner | Czechoslovakian | Miller. | M | |
| 59 | Mros | Czechoslovakian | Walrus. | M | |
| 60 | Novak | Czechoslovakian | Newcomer. | M | |