Sergei Lashchenko, Ukrainian kick-boxer (b. 1987)
Serhiy Lashchenko (Ukrainian: Сергій Лащенко; 21 June 1987 – 8 April 2015), also spelled as Sergii Lashchenko and Sergei Lascenko, was a Ukrainian kickboxer. He was a K-1 and Superkombat Heavyweight.

Lashchenko won the Superkombat Tournament Championship at SUPERKOMBAT World Grand Prix 2011 Final, stopping Ismael Londt with punches to the head in the first round and becoming the first Superkombat World Grand Prix champion in the process.

In his prime he was considered one of the best heavyweight kickboxers in the world, with a career-high ranking at #6 in the world in the LiverKick.com rankings.