Wyndham Halswelle, English runner and soldier (d. 1915)
Wyndham Halswelle (30 May 1882 – 31 March 1915) was a British athlete. He won the controversial 400m race at the 1908 Summer Olympics, becoming the only athlete to win an Olympic title by a walkover.

Halswelle was also an infantry officer who served in the Second Boer War and World War I. He was killed by a sniper at the Battle of Neuve Chapelle in 1915.