Marina Antonyuk (; born 12 May 1962) is a Russian former track and field athlete who competed in the shot put. She set a personal best of in 1986. She represented the Soviet Union at the 1991 World Championships in Athletics, finishing seventh, and at the 1990 European Athletics Championships, coming eighth. She was a silver medallist at the 1992 IAAF World Cup behind Cuba's Belsis Laza.
Antonyuk was the 1987 national shot put champion at the Soviet Athletics Championships.