Alexander Sergeyevich Zaldastanov (Russian: Алекса́ндр Серге́евич Залдаста́нов, also known as "The Surgeon", Russian: Хирург), is a Russian motorcycle club leader, political activist, and former physician. He is the leader of the Night Wolves, Russia's largest motorcycle club. He was awarded the Medal "For the Return of Crimea" by President of the Russian Federation Vladimir Putin for his actions in "Helping Crimeans to self-determine".