| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 41 | Ivana | Czechoslovakian | Feminine of Ivan. | F | |
| 42 | Ivania | Czechoslovakian | Feminine of Ivan. | F | |
| 43 | Ivanna | Czechoslovakian | Feminine of Ivan. | F | |
| 44 | Jana | Czechoslovakian | Variant of John. God's gift. In Roman mythology; Jana was the wife of Janus. | F | |
| 45 | Janah | Czechoslovakian | Variant of John. In Roman mythology; Jana was the wife of Janus. | F | |
| 46 | Janalee | Czechoslovakian | Variant of John. In Roman mythology; Jana was the wife of Janus. | F | |
| 47 | Janalyn | Czechoslovakian | Variant of John. In Roman mythology; Jana was the wife of Janus. | F | |
| 48 | Janalyn | Czechoslovakian | Variant of John. In Roman mythology; Jana was the wife of Janus. | M | |
| 49 | Janalynn | Czechoslovakian | Variant of John. In Roman mythology; Jana was the wife of Janus. | F | |
| 50 | Janceena | Czechoslovakian | Variant of John. In Roman mythology; Jana was the wife of Janus. | F | |
| 51 | Janek | Czechoslovakian | Variant of John God has been gracious; has shown favor. | M | |
| 52 | Janica | Czechoslovakian | Variant of John. In Roman mythology; Jana was the wife of Janus. | F | |
| 53 | Janna | Czechoslovakian | Variant of John. In Roman mythology; Jana was the wife of Janus. | F | |
| 54 | Jannah | Czechoslovakian | Variant of John. In Roman mythology; Jana was the wife of Janus. | F | |
| 55 | Jannalee | Czechoslovakian | Variant of John. In Roman mythology; Jana was the wife of Janus. | F | |
| 56 | Janne | Czechoslovakian | Variant of John. In Roman mythology; Jana was the wife of Janus. | F | |
| 57 | Jannie | Czechoslovakian | Variant of John. In Roman mythology; Jana was the wife of Janus. | F | |
| 58 | Janny | Czechoslovakian | Variant of John. In Roman mythology; Jana was the wife of Janus. | F | |
| 59 | Janny | Czechoslovakian | Variant of John. In Roman mythology; Jana was the wife of Janus. | M | |
| 60 | Janos | Czechoslovakian | Variant of the Hebrew John: Jehovah has been gracious; has shown favor. | M | |