Oscar Jack Piastri (/piˈæstriː/ pee-AST-ree; born 6 April 2001) is an Australian racing driver who competes in Formula One for McLaren. Piastri has won nine Formula One Grands Prix across four seasons.

Born and raised in Melbourne, Piastri began his career in radio-controlled racing before moving into karting aged 10, where he won several regional titles. Graduating to junior formulae in 2016, Piastri won his first championship at the 2019 Formula Renault Eurocup with R-ace GP. He then won both the 2020 FIA Formula 3 and 2021 FIA Formula 2 Championships back-to-back with Prema, becoming the sixth driver in history to win the GP2/Formula 2 title in their rookie season. Piastri is the only driver in history to win Formula Renault, Formula Three, and Formula Two—or equivalent—championships in successive seasons.

A member of the Alpine Academy from 2020 to 2022, Piastri signed with McLaren in 2023 to partner Lando Norris, following a contract dispute with Alpine. He made his Formula One debut at the Bahrain Grand Prix, achieving his first career podium in his rookie season at the Japanese Grand Prix. Retaining his seat for 2024, Piastri achieved his maiden victory in Hungary, which he repeated in Azerbaijan, becoming the fifth Australian to win a Formula One Grand Prix. In 2025, he took seven further victories, as well as his maiden pole position at the Chinese Grand Prix, as he finished third in a title battle with Norris and Max Verstappen.

As of the 2026 Miami Grand Prix, Piastri has achieved nine race wins, six pole positions, nine fastest laps, and 28 podiums in Formula One. Piastri is contracted to remain at McLaren until at least the end of the 2028 season.

Oscar Jack Piastri was born on 6 April 2001 in Melbourne, Victoria, Australia. His father, Chris Piastri, is the founder and owner of HP Tuners, an automotive software company; the company sponsored his junior formulae career with up to A$6.5 million. He served as Piastri's kart mechanic as he contested national championships in Australia. His mother, Nicole Piastri (née MacFadyen), helped raise him in the suburb of Brighton with his three younger sisters—Hattie, Edie, and Mae. He claims Italian, Yugoslavian, and Chinese heritage from his father, as well as Scottish and Irish from his mother. His bedtime stories frequently consisted of automotive books, prompting his father to buy him a radio-controlled car on a business trip when he was six, which he began racing in his backyard.

Piastri began racing competitively aged nine with Remote Control Racing Australia, winning the secondary class of the national championship before moving into kart racing. Aged 14, he moved with his father—who returned to Melbourne six months later—to Hertford, England, to continue his international racing career in Europe. Having been privately educated at Haileybury, he moved to its sister school in Hertford Heath—whose alumni include Stirling Moss—as a boarding pupil on a sports scholarship. By the end of 2015, Piastri began travelling for karting tests and competitions between Italy, France, Belgium, Sweden, Spain, and Portugal from Stansted Airport, costing his father around £250,000. In 2019, he was taken under the wing of nine-time Grand Prix winner Mark Webber and his wife, Ann; the former has served as his manager since and negotiated his move to Formula One.

Following his successes in radio-controlled racing, Piastri moved into kart racing in 2011 at the local Oakleigh Go Kart Racing Club (OGKRC) in Clayton South, aged 10. A protégé of two-time Australian Champion James Sera, he began competing for the club that year in an FA Kart chassis. He won his first title two years later: the 2013 CIK Stars of Karting in the Rookies class. In 2014, he won the OGKRC Championship, City of Melbourne Titles, South Australian Championship, and National Sprint Classic Champion of Champions in Junior Clubman—he claimed a A$500 prize for the latter. He further claimed runner-up in the Australian National Sprint Championship and the Victorian Championship, before progressing to international competition in the IAME International Final at Le Mans; he finished third on his debut in X30 Junior from twenty-first on the grid. He closed his national career with third in the KF3 Australian Championship—where he was ranked the Top Qualifier—as well as victory in the Victorian Championship, OGKRC's Junior Top Guns, the Gold Coast Race of Stars, and the City of Melbourne Titles again in 2015.

I knew it was a necessary step if I wanted to have a chance to make it to Formula One; you can't become a Formula One driver by staying in Australia.