Oleg Antonovich Mikulchik (; born June 27, 1964) is a Belarusian former professional ice hockey played in the National Hockey League for the Winnipeg Jets and the Mighty Ducks of Anaheim. Mikulchik played 37 regular season games, scoring 3 assists and collecting 37 penalty minutes. He represented the Soviet Union at the 1984 World Junior Ice Hockey Championships and Belarus at several World Championships and at the 2002 Winter Olympics.