Denis Horgan (18 May 1871 – 2 June 1922) was a champion Irish athlete and weight thrower, born in Banteer, County Cork, who competed mainly in the shot put.

[1] Shortly after setting a world record of 48 feet 2 inches with the 16 pound shot at Queenstown,[citation needed] in County Cork, Ireland in 1897, Horgan visited the U.S., and in 1900, he joined the Greater New York Irish Athletic Association, the predecessor of the Irish American Athletic Club for a brief period.

[citation needed] In 1906, Horgan set the world's record for the 28 pound shot, with a distance of 35 feet, 4.5 inches at the Ancient Order of Hibernians games held at Celtic Park in Queens, New York.

[3] He competed for Great Britain in the 1908 Summer Olympics he London in the shot put, where he won the silver medal.

[citation needed] Horgan was "usually so superior to his fellow competitors that he seldom trained in any sort of systematic way, yet he showed a marked consistency of performance, in all conditions, over a period of twenty years.