William Bethel Thompson (28 December 1906 – 12 February 1945) was an Australian racing driver. From Summer Hill, Sydney, he was active in motor sport from 1928 to 1936. His competition cars included various Bugattis, a Riley Brooklands and an MG K3. Although his career was not taken to the international level, he met with considerable successful in Australia, winning the Australian Grand Prix three times.