Marina Anatolyevna Melnikova (; born 5 February 1989) is a Russian tennis player. She reached her best doubles ranking of world No. 80 on 20 June 2016. On 4 May 2015, she peaked at No. 170 in the singles rankings.
She has won seven singles and 16 doubles titles on the ITF Circuit.
Melnikova is currently coached by Oleg Mannapov. Her father is Anatoliy, mother is Elena, and brother is Sergey. She started playing at age seven when introduced to the sport by her dad. Her favorite surfaces are hardcourt and clay. After finishing school in 2008, she moved from Russia to Germany, and she speaks fluently English and German.
Melnikova made her WTA Tour debut 2008 at Barcelona and also featured 2009 in the Rosmalen Open, both times in the doubles draw.
She was a finalist at the 2014 Delhi Open in doubles, alongside Elise Mertens.
At the age of 35 and ranked No. 440 she qualified the 2024 San Diego Open but lost to fellow qualifier Canadian Marina Stakusic who was playing only her second main draw at a WTA Tour event.