Adrian Mannarino (born 29 June 1988) is a French professional tennis player who is currently ranked world No. 38 in ATP singles rankings as of 9 March 2020. He has a career-high ATP singles rankings of world No. 22 attained on 19 March 2018. He won his first ATP Tour singles title in 2019 in Rosmalen on grass (he defeated Jordan Thompson in the final). He was the singles runner-up at eight ATP Tour tournaments held in Auckland, Bogotá, Antalya (2017), Tokyo, Antalya (2018), Moscow (2018), Zhuhai and Moscow (2019). Mannarino has achieved victories over five players ranked in the Top 10 of the ATP singles rankings; Marin Čilić, Milos Raonic, Jo-Wilfried Tsonga, Stan Wawrinka and Stefanos Tsitsipas.
Mannarino made his Grand Slam singles debut at the 2007 French Open, where as a wild card, he lost in the first qualifying round to Marin Čilić in straight sets.
Mannarino received a wild card for the singles main draw of his home Grand Slam tournament, the 2008 French Open, where he lost to Argentine qualifier Diego Junqueira in the first round in straight sets. He also received a wild card for the 2008 French Open men's doubles (it was his Grand Slam men's doubles debut), losing in the first round.