| Katarzyna Tomicka z Iwna | |
|---|---|
| Coat of arms | Łodzia |
| Born | 1516/1518 Iwno, near Kostrzyn |
| Died | 1551 Wilno |
| Family | Tomicki |
| Consort | Mikołaj "the Red" Radziwiłł |
| Issue | |
| Father | Jan Tomicki h. Łodzia |
| Mother | Barbara Potulicka h. Grzymała |
Katarzyna Tomicka (c.1517–1551) was a Polish noble lady.
Katarzyna was born in Iwno, the third daughter of podkomorzy of Kalisz, Jan Tomicki h. Łodzia and sister-aunt of the Court Marshal and Bishop of Kraków, Piotr Tomicki h. Łodzia. She died in Wilno.
Her sons initiated the so-called "Calvinist lineage" of the Radziwiłł family. The male line expired in 1669.
Katarzyna married Mikołaj "Rudy" Radziwiłł around 1542 and had three children: