| Orsolya Esterházy | |
| Full Name: | Countess Orsolya Esterházy of Galantha |
| Reign: | 7 February 1655 – 31 March 1682 |
| Succession: | Countess Esterházy of Galántha |
| Consort: | yes |
| Spouse: | Paul I, 1st Prince Esterházy of Galántha |
| Issue: | 19 |
| House: | House of Esterházy |
| Father: | Count István Esterházy |
| Mother: | Countess Erzsébet Thurzó |
| Birth Date: | 7 March 1641 |
| Birth Place: | Lakompak, Kingdom of Hungary |
| Death Place: | Kismarton, Kingdom of Hungary |
Countess Orsolya Esterházy of Galantha (7 March 1641 in Lakompak, Kingdom of Hungary – 31 March 1682 in Kismarton, Kingdom of Hungary), was a member of the Esterházy, the only daughter of Count István Esterházy and Countess Erzsébet Thurzó, granddaughter of Nikolaus, Count Esterházy. Through her marriage to her uncle, Pál Esterházy, she became countess of Galanta.
Orsolya Esterházy was born on March 7, 1641, in Lakompak (now Lackenbach), as a member of the older branch of the Esterházy family. Her parents were the papal castle captain István Esterházy and Countess Erzsébet Thurzó. His paternal grandparents were Nikolaus, Count Esterházy and his first wife, Baroness Orsolya Dersffy de Szerdahely, while her maternal grandparents were Count Imre Thurzó de Bethlenfalva and Krisztina Nyáry (also the second wife of Count Nikolaus, her paternal grandfather).
On February 7, 1655, at the age of only fourteen, Orsolya married her own paternal uncle,[1] Palatine Pál Esterházy, in Kismarton.[1] A total of nineteen children were born from the marriage,[1] eight of whom reached adulthood. Their children:
Orsolya Esterházy died in Kismarton on March 31, 1682, at the age of only forty-one. Her husband, Pál Esterházy, laid his wife Orsolya to rest in a glass coffin in the family tomb in Frakno. After his death, however, Prince Pál remarried five months after Orsolya's death. His second wife was the sister of Prince Imre Thököly, Countess Éva Thököly of Késmárk, with whom he had two more children.