John Henry Kuck (April 27, 1905 – September 21, 1986) was an Americanathlete who won a gold medal in the shot put at the 1928 Summer Olympics setting a new world record at 15.87 m. Earlier that year he set two more world records, but they were not recognized officially. In 1926 he also set a US record in the javelin throw at 65.28 m and won the AAU title.
The 1920, 1928, 1932, 1992, 1996, 2000, 2004, 2008 and 2012 championships incorporated the Olympic Trials, otherwise held as a discrete event.
Ken Churchill had the longest throw in the 1932 competition (which doubled as the Olympic Trials), ahead of Malcolm Metcalf. However, Churchill qualified for the final only due to a late rule change by the U.S. Olympic Committee, allowing eight rather than five finalists. As this rule change applied only to the Olympic Trials, Churchill is considered to have won at the Trials and Metcalf at the national championships, even though they were the same meet.