Oskari Paldanius

Oskari Paldanius (born 11 June 2007) is a Finnish tennis player. He has a career-high ATP singles ranking of No. 824 achieved on 31 August 2026 and a doubles ranking of No. 808 achieved on 24 August 2026.

Partnering with Alan Ważny, he won two major jr. doubles titles at 2025 French Open and 2025 Wimbledon Championships.

Early life Paldanius was born in Laupheim, Germany, to Finnish parents who were working abroad at the time.

Career Paldanius is a member of Smash Club in Helsinki. He won his first match at a junior Grand Slam in the boys' singles at the 2024 US Open, before losing to Mees Rottgering. He reached the semi-finals of the boys' singles at the 2025 Australian Open, where he lost to eventual winner Henry Bernet. With that run, he rose to fifth in the junior world rankings. Shortly afterwards, he was called into the Finland Davis Cup team.

He won the 2025 French Open in the boys' doubles alongside Alan Ważny of Poland, reaching the semi-finals after a straight sets win against Thijs Boogaard and Ivan Ivanov, before beating Keaton Hance and Jack Kennedy of the United States in the semi-finals, and then another American pairing of Noah Johnston and Benjamin Willwerth in straight sets in the final.

ITF World Tennis Tour finals

Singles: 1 (runner-up) LegendITF WTT (0–1)

Doubles: 3 (2 titles, 1 runner-up) LegendITF WTT (2–1)Finals by surfaceHard (2–1)Clay (0–0)

Junior Grand Slam finals

Doubles: 2 (2 titles)