Sergey Yuryevich Tetyukhin (Russian: Серге́й Юрьевич Тетюхин; born 23 September 1975) is a former Russian volleyball player.

He is 1.97 m tall, and plays as passer-attacker.

Together with Samuele Papi and Sérgio Santos, he is one of only three male volleyball players who have accumulated four Olympic medals in the course of their long sporting careers.

Tetyukhin, however, has the distinction of being the only volleyball player in the world (male or female) with four Olympic medals who has all three types of those awards, including gold at the London Olympics.

He competed at six Summer Olympics, having been the flag-bearer in 2016.