Jack Aitken (Korean: 한세용, "Han Se-yong"; born 23 September 1995 in London) is a British-Korean racing driver who last competed in the 2021 Formula 2 Championship with HWA Racelab. Born in London to a Scottish father and 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 is also the reserve driver for the Williams Formula One team, for whom he raced at the 2020 Sakhir Grand Prix, replacing George Russell, who, in turn, replaced Lewis Hamilton at Mercedes for the event.