Alex Molčan (born 1 December 1997) is a Slovak professional tennis player. He has a career-high ATP singles ranking of world No. 38, achieved on 23 May 2022 and a doubles ranking of No. 268, achieved on 14 June 2021. He is currently the No. 2 singles player from Slovakia.
Molčan has reached three ATP 250 finals at the 2021 Belgrade Open, Morocco in 2022 and at the 2022 ATP Lyon Open.