Viktor Pavlovich Kostyuchenok (Belarusian: ?????? ???????? ??????????; Russian: ?????? ???????? ??????????) (born 7 June 1979) is a Belarusian former professional ice hockey defenceman and currently an assistant coach for HC Spartak Moscow of the Kontinental Hockey League (KHL).
During a playing career that lasted from 1995 until 2014 he played for multiple teams across Europe.