Thiago Seyboth Wild
| Seyboth Wild at the 2024 Summer Olympics | |
| Country (sports) | Brazil | 
|---|---|
| Residence | Buenos Aires, Argentina | 
| Born | 10 March 2000 Marechal Cândido Rondon, Paraná, Brazil | 
| Height | 1.85 m (6 ft 1 in) | 
| Turned pro | 2018 | 
| Plays | Right-handed (two-handed backhand) | 
| Coach | Carlos Eduardo Matos | 
| Prize money | US $ 2,163,708 | 
| Singles | |
| Career record | 37–54 | 
| Career titles | 1 | 
| Highest ranking | No. 58 (20 May 2024) | 
| Current ranking | No. 120 (16 June 2025) | 
| Grand Slam singles results | |
| Australian Open | 1R (2024, 2025) | 
| French Open | 3R (2023) | 
| Wimbledon | 2R (2024) | 
| US Open | 1R (2020, 2024) | 
| Other tournaments | |
| Olympic Games | 1R (2024) | 
| Doubles | |
| Career record | 8–15 | 
| Career titles | 0 | 
| Highest ranking | No. 197 (22 May 2023) | 
| Grand Slam doubles results | |
| Australian Open | 1R (2024) | 
| French Open | 2R (2024) | 
| Wimbledon | 1R (2024) | 
| US Open | 1R (2024) | 
| Other doubles tournaments | |
| Olympic Games | 2R (2024) | 
| Other mixed doubles tournaments | |
| Olympic Games | 1R (2024) | 
| Last updated on: 16 June 2025. | |
Thiago Seyboth Wild (Brazilian Portuguese: [tʃiˈaɡu ˈzajbutʃi ˈviwdʒi]; born 10 March 2000) is a Brazilian professional tennis player. He has a career-high ATP singles ranking of world No. 58, achieved on 20 May 2024 and a doubles ranking of No. 197, achieved on 22 May 2023. He is currently the No. 2 player from Brazil.
Seyboth Wild played on junior circuit and had a combined ITF ranking of No. 8, attained in January 2018. He won the boys' singles title at 2018 US Open.
In March 2020, at just 19 years old, Seyboth Wild won his first ATP Tour title at 2020 Chile Open, defeating second seed Casper Ruud in the final. Then he became the youngest Brazilian ATP titlist until João Fonseca's trophy at 2025 Argentina Open.