Natalija Kostic (Serbian Cyrillic: ???????? ??????, born 25 July 1994) is a Serbian tennis player.
Kostic has won 13 singles and 11 doubles titles on the ITF Women's Circuit.
On 30 September 2019, she reached her best singles ranking of world No.
189.
On 29 July 2019, she peaked at No.
235 in the WTA doubles rankings.
Kostic is a former junior top 5 player and was officially a member of Serbia Fed Cup team in a World Group quarterfinal tie against Belgium in 2012.Kostic missed the whole of 2015 and the first half of 2016 due to operation of liver cyst.