Olga Ivanovna Melnik (Russian: ????? ???????? ???????; born 12 May 1974 in Sovetsky, Khanty-Mansi Autonomous Okrug) is a Russian biathlete.
At the 1998 Winter Olympics in Nagano, she received a silver medal with the Russian relay team, which consisted of herself, Galina Koukleva, Albina Akhatova and Olga Romasko.