John Dahlin (11 January 1886 – 12 July 1927) was a Swedish track and field athlete who competed in the 1912 Summer Olympics.
[1] In 1912, he qualified for the semi-finals of the 400 metres competition, but he did not start in the race.
He was also a member of the Swedish relay team, which was eliminated in the first round of the 4x400 metre relay event.
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