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The United Kingdom.
The United Kingdom has the most Formula One champions, with 10 drivers having won 18 titles between them. They are Mike Hawthorn (1958), Graham Hill (1962, 1968), Jim Clark (1963, 1965), John Surtees (1964), Jackie Stewart (1969, 1971, 1973), James Hunt (1976), Nigel Mansell (1992), Damon Hill (1996), Lewis Hamilton (2008, 2014, 2015,2017,2018), and Jenson Button (2009).