João Fonseca (tennis)

João Fonseca
Full nameJoão Franca Guimarães Fonseca
Country (sports) Brazil
ResidenceRio de Janeiro
Born (2006-08-21) 21 August 2006
Height1.88 m (6 ft 2 in)
Turned pro2024
PlaysRight-handed (two-handed backhand)
Coach
Prize moneyUS $2,826,835
Singles
Career record42–28 (at ATP Tour level, Grand Slam level, and in Davis Cup)
Career titles2
Highest rankingNo. 24 (3 November 2025)
Current rankingNo. 39 (16 March 2026)
Grand Slam singles results
Australian Open2R (2025)
French Open3R (2025)
Wimbledon3R (2025)
US Open2R (2025)
Doubles
Career record4–5 (at ATP Tour level, Grand Slam level, and in Davis Cup)
Career titles1
Highest rankingNo. 160 (23 February 2026)
Current rankingNo. 163 (16 March 2026)
Team competitions
Davis Cup4–2
Last updated on: 16 March 2026.

João Franca Guimarães Fonseca (Portuguese pronunciation: [ʒuˈɐ̃w fõˈsekɐ]; born 21 August 2006) is a Brazilian professional tennis player. He has a career-high ATP singles ranking of world No. 24, achieved on 3 November 2025 and a best doubles ranking of No. 160, reached on 23 February 2026. He is the current No. 1 singles player from Brazil.

Fonseca has won two ATP Tour singles titles at the 2025 Argentina Open and 2025 Swiss Indoors and one doubles title, at the 2026 Rio Open.

Fonseca is also the 2024 NextGen Finals champion.