Ioannis Drymonakos (born 18 January 1984) is a Greek swimmer from Athens. He became the first ever Greek swimmer to hold a European swimming record by clocking a time of 1:54.16 seconds in 200 m butterfly event of the 2008 European Aquatics Championships final on 21 March 2008. In 2008, a few days before the Beijing Olympic Games he tested positive for banned drugs during a doping-control test. In 2012 he won two more bronze medals at the European Championship in Debrecen. At the 2012 Summer Olympics in London, he competed in the 200-meter butterfly where he placed 15th overall.