| # | Name | Origin | Meaning | Gender | |
|---|---|---|---|---|---|
| 121 | Jacek | Polish | Alas. | M | |
| 122 | Jack | Polish | God is gracious. | M | |
| 123 | Jadwiga | Polish | Refuge in war. | F | |
| 124 | Jan | Polish | God is gracious. | M | |
| 125 | Jana | Polish | Polish form of Joanna: God is gracious. Variant of John. In Roman mythology; Jana was the wife of Janus. | F | |
| 126 | Janah | Polish | Variant of John. In Roman mythology; Jana was the wife of Janus. | F | |
| 127 | Janah | Polish | Variant of John. In Roman mythology; Jana was the wife of Janus. | M | |
| 128 | Janalee | Polish | Variant of John. In Roman mythology; Jana was the wife of Janus. | F | |
| 129 | Janalyn | Polish | Variant of John. In Roman mythology; Jana was the wife of Janus. | F | |
| 130 | Janalynn | Polish | Variant of John. In Roman mythology; Jana was the wife of Janus. | F | |
| 131 | Janceena | Polish | Variant of John. In Roman mythology; Jana was the wife of Janus. | F | |
| 132 | Janecska | Polish | Polish form of Joanna 'God is gracious'. | F | |
| 133 | Janek | Polish | God is gracious. | M | |
| 134 | Janica | Polish | Variant of John. In Roman mythology; Jana was the wife of Janus. | F | |
| 135 | Janna | Polish | Variant of John. In Roman mythology; Jana was the wife of Janus. | F | |
| 136 | Jannah | Polish | Variant of John. In Roman mythology; Jana was the wife of Janus. | F | |
| 137 | Jannalee | Polish | Variant of John. In Roman mythology; Jana was the wife of Janus. | F | |
| 138 | Janne | Polish | Variant of John. In Roman mythology; Jana was the wife of Janus. | F | |
| 139 | Jannie | Polish | Variant of John. In Roman mythology; Jana was the wife of Janus. | F | |
| 140 | Janny | Polish | Variant of John. In Roman mythology; Jana was the wife of Janus. | F | |