Tomáš Macháč (Czech pronunciation: [ˈtomaːʃ ˈmaxaːtʃ]; born 13 October 2000) is a Czech professional tennis player. He achieved his career-high ATP singles ranking of world No. 34 on 27 May 2024 and doubles ranking of No. 65 on 6 May 2024. He is currently the No. 2 Czech player.