Monica Niculescu (born 25 September 1987) is a Romanian professional tennis player. She has been ranked by the Women's Tennis Association as high as 28 in singles and 11 in doubles. Niculescu has won several titles: three singles and ten doubles titles on the WTA Tour, one singles and one doubles title at WTA 125 tournaments, as well as 19 singles and 22 doubles titles on the ITF Women's Circuit.