Arkady Arkadyevich Vyatchanin (Russian: Аркадий Аркадьевич Вятча́нин, Serbian Cyrillic: Аркадиј Аркадјевич Вјатчањин; born 4 April 1984) is a retired Russian, Serbian and American backstroke swimmer.

He was born in Vorkuta, and in 1999 moved to Taganrog, Russia, where he graduated from the South Federal University.

He was a member of the Russian National Team in 2000–2015; moved to Serbia in 2015[3] and to the United States in 2017, and retired in June 2018.

His mother Irina and elder sister Alla competed at the national level.

This biographical article related to a Russian swimmer is a stub.