Ernst von Middendorff (10 January 1851 – 6 April 1916), the son of the Baltic explorer Alexander von Middendorf, was an agronomist and ornithologist who made an extensive collection of birds from across Europe.
He was educated privately, at the Wiedemann Grammar School in St Petersburg and then at Dorpat.
He was interested in natural history from an early age and joined an expedition in the Arctic Circle along with his father.
He returned and managed the estates of his father at Samhof, Pörrafer, and Hellenorm.
He served as a vice president of the second international ornithological congress held at Budapest.