Viktor Mikhailovich Chegin (Russian: ?????? ?????????? ?????; born 3 February 1962 in Bersenevka, Lyambirsky District) is a banned Russian racewalking coach.
He was responsible for training all three athletes who swept the medals at the 2009 World Championships in Athletics: Olga Kaniskina, Valeriy Borchin and Sergey Kirdyapkin.
His athletes Elena Lashmanova and Kirdyapkin won gold medals at the 2012 Summer Olympics, with Kaniskina earning a silver medal.
Current world record holders Lashmanova, Denis Nizhegorodov and Sergey Morozov are all coached by Chegin.
More than 20 of Chegin's trainees were disqualified for doping-related offenses between 2005 and 2015.
As a result, he was banned for life from all sport-related activities on 17 February 2016.
Historical results by Cheggin coached athletes continued to be disqualified into mid-2019.