Sergey Tkachenko

Sergey Tkachenko (Сергей Ткаченко; born 8 June 1999) is a Kazakhstani ski jumper. He competed in two events at the 2018 Winter Olympics.

Summer world record
On 11 July 2018 at the opening event of Burabay Ski Jumps hill in Shchuchinsk, Kazakhstan he set the summer world record distance at 151 metres (495 ft), longest standing on plastic mate.