Date of Birth: 
Place of Birth: Nizhny Novgorod, Nizhny Novgorod Oblast, Russia
About Oleg Kostin
- Oleg Olegovich Kostin (Russian: ???? ???????? ??????; born 6 May 1992) is a Russian swimmer.
- He competed in the men's 50 metre butterfly event at the 2017 World Aquatics Championships.
- At the 2018 European Championships in Glasgow, he won a bronze in the 50 metre butterfly, setting a Russian 50 metre butterfly record of 22.97 seconds.
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