Sergei Martinyuk is a retired Soviet hockey centre. He was drafted in the 12th round, 249th overall in the 1990 NHL Entry Draft by the Montreal Canadiens. He played for Lokomotiv Yaroslavl from 1987 to 1993 and played in the 1991 World Junior Ice Hockey Championships. After that Martinyuk played for HC Ambri-Piotta (1992-93), KalPa Kuopio (1993-94), and Lada Tolyatti (1994-95).