Alexander Stanislavovich Bublik is a Russian-born Kazakhstani professional tennis player. He has a career-high ATP singles ranking of world No. 11, achieved on 10 November 2025 and a doubles ranking of No. 47, achieved on 8 November 2021. He is the current Kazakhstani No. 1 in men's singles. Bublik recorded his greatest success at a Grand Slam event at the 2025 French Open where he reached the quarterfinals in singles, the first Kazakhstani man to achieve the feat. Bublik was also the runner-up in doubles at the 2021 French Open, partnering fellow countryman Andrey Golubev, the first Kazakhstani male players to contest a major final. He has won eight ATP Tour singles titles.