Constant Lestienne (French pronunciation: [kɔ̃stɑ̃ lɛstjɛn]; born 23 May 1992) is a French professional tennis player. He competes mainly on the ITF Men's Circuit and ATP Challenger Tour. He reached his highest ATP singles ranking of World No. 61 on 3 October 2022 and his highest doubles ranking of World No. 343 was achieved on 28 May 2018. He has won five ATP Challenger Tour singles titles. In addition, he has won five singles titles and three doubles titles in the ITF Men's Circuit. (Source: Wikipedia.org, CC BY-SA)