Sergei Vladimirovich Fedorchenko (; born 18 September 1974) is a Kazakhstani former gymnast who competed in the 1996 Summer Olympics and in the 2000 Summer Olympics.
The "Fedorchenko" is a dismount from high bar with two laid out backflips and three twists. It remains rare because of its difficulty. He also has a move named after him on pommel horse that is also used on floor exercise.