Jack Aitken (Korean: 한세용, Han Se-yong; born 23 September 1995 in London) is a British-South Korean racing driver set to compete in the 2022 European Le Mans Series with Racing Team Turkey. He is the current reserve driver for Williams Racing in Formula One.
Born in London to a Scottish father and South Korean mother, Aitken began his career in karting at Buckmore Park, aged 7. He made the transition to cars when he competed in the Intersteps Championship with Fortec Motorsport, with whom he then went on to race with in the Formula Renault BARC Winter Series, Formula Renault NEC and Formula Renault Eurocup.
After winning the Formula Renault Eurocup in 2015, Aitken was signed up for the Renault young driver academy, with which he remained until 2019. After competing in the GP3 Series in 2016 and 2017 he progressed to Formula 2 for 2018. He also raced for the Williams Formula One team at the 2020 Sakhir Grand Prix, replacing George Russell, who, in turn, replaced Lewis Hamilton at Mercedes for the event.