| Katarzyna Kostka | |
| House-Type: | Szlachta |
| Noble Family: | Kostka |
| Coa: | Dąbrowa |
| Father: | Jan Kostka |
| Mother: | Zofia Odrowąż |
| Spouse-Type: | Consort |
| Issue: | Mikołaj Sieniawski Aleksander Sieniawski Prokop Sieniawski |
| Birth Date: | ca. 1575 |
| Death Date: | 1648 |
Katarzyna Kostka (1576–1648) was a Polish–Lithuanian noblewoman.
The daughter of Jan Kostka, she married Adam Hieronim Sieniawski around 1598.[1]