Nicholas Hay, 2nd Earl of Erroll (c. 1436 – 1470) was a Scottish peer.

Nicholas Hay was the son of William Hay, 1st Earl of Erroll and Lady Beatrix Douglas, daughter of James Douglas, 7th Earl of Douglas.

Nicholas was the great-great-grandson of King Robert II of Scotland and his first wife, Elizabeth Mure.

[1][2][3] He had a contract to Lady Margaret, daughter of Alexander Gordon, 1st Earl of Huntly which for some reason did not take place; he instead married her sister, Lady Elizabeth, on 15 November 1461.

He died without issue and the earldom passed to his brother, William.