Aleksey Valerevich Kazakov (Russian: Алексей Валерьевич Казаков, born 18 May 1976) is a Russian volleyball player. He was born in Naberezhnye Chelny, Tatar Autonomous Soviet Socialist Republic. Kazakov was a member of the national team that won the bronze medal at the 2004 Summer Olympics in Athens. Four years earlier in Sydney he gained the silver medal. He is 2.18 metres tall, making him one of the tallest athletes in the world.