Zsófia Katalin Illésházy de Illésháza (1547–1599) was a Hungarian noblewoman, the sixth and youngest child of Tamás Illésházy and his second wife, Zsófia Földes.

Her father functioned as Vice-ispán (Viscount; vicecomes) of Pozsony County.

Her elder brother was Baron István Illésházy, who served as Palatine of Hungary between 1608 and 1609.

In 1566, she married Ferenc Esterházy de Galántha (1533–1604), the first member of the prestigious House of Esterházy.

They had the following children: