Nicholas II, Prince Esterházy was a Hungarian prince. He served the Austrian Empire and was a member of the famous Esterházy family. He is especially remembered for his art collection and for his role as the last patron of Joseph Haydn.

The House of Esterházy, also spelled Eszterházy, is a Hungarian noble family with origins in the Middle Ages. From the 17th century, the Esterházys were the greatest landowner magnates of the Kingdom of Hungary, during the time that it was part of the Habsburg monarchy and later Austria-Hungary. During the history of the Habsburg Empire, the Esterházy family was consistently loyal to the Habsburg rulers. The Esterházys received the title of Graf (Count) in 1626, and the Forchtenstein line received the title of Fürst (Prince) from the Holy Roman Emperor in 1712.