Sofia "Sonya" Anna Kenin (/ˈsoʊniə ˈkɛnɪn/ SOH-nee-ə KEN-in; born November 14, 1998) is an American professional tennis player. She has a career-high Women's Tennis Association (WTA) ranking of No. 28 in the world. Kenin has won two WTA singles titles.
Kenin was a child prodigy whose ability attracted the attention of veteran coach Rick Macci at the age of five. Coached primarily by her father, Kenin became a promising junior player, reaching No. 2 in the world after winning the Orange Bowl at the age of 16 and finishing runner-up at the 2015 US Open girls' singles event the following year. She also won the USTA Girls 18s National Championship during that summer. On the professional tour, Kenin made her debut in the top 100 of the WTA rankings in 2018 as a teenager. She has reached three WTA singles finals in 2019, and also won her first titles in both singles and doubles early in the year. Her best result at a Grand Slam tournament came at the 2019 French Open, where she defeated Serena Williams and made it to the fourth round.