Earl J "Tommy" Thomson (February 15, 1895 – April 19, 1971) was Canadian athlete, a specialist in the high hurdles.
Born in Birch Hills, Saskatchewan, Thomson moved to southern California at age 8, because the warm weather would be better for his mother. Thomson attended Long Beach Poly, where he won the 120 yard hurdles at the first CIF California State Meet in 1915. He also was second in the High Jump and 4th in the Discus He then went to the University of Southern California for one year and then transferred to Dartmouth College. He graduated from there in 1922 after two years in the RCAF in WWI. In 1918, he had already won the AAU championships in the high hurdles, and in 1920, he set a new world record in the 110 m hurdles, running 14.4. This record would remain unbeaten until 1931, although it was equaled a number of times. He sought to represent the United States at the 1920 Summer Olympics in Antwerp, but was ruled ineligible due to his Canadian citizenship. He then joined the Canadian Olympic team.
At the Olympics, Thomson won a clear victory over his American rivals. The following year, he equaled his own world record, and won the AAU, IC4A and NCAA championships. That year he also won the 220 yard low hurdles. He retired after his third AAU title, in 1922.