Eduardo Jonatan Schwank (Spanish pronunciation: [e'ðwa?ðo '?wa?k]; also known as Schwanka; born 23 April 1986) is a retired professional tennis player from Argentina.
In 2011, he reached the finals of the French Open in men's doubles partnering Juan Sebastian Cabal and of the US Open in mixed doubles partnering Gisela Dulko.
He was coached by Javier Nalbandian, the brother of David Nalbandian.
Schwank's family background is from the German-speaking part of Switzerland