Nika Radišić (born 19 March 2000) is a Slovenian tennis player.

Radišić has a career-high singles ranking of world No.

On the ITF Junior Circuit, she has a career-high combined ranking of 18, achieved on 26 February 2018.

Radišić made her debut for the Slovenia Fed Cup team in 2018.

She made her WTA Tour main-draw debut as a wildcard entrant at the 2021 Portorož Open, losing to Kristina Mladenovic in the first round.