John Kelley

John, Jack, or Johnny Kelley can be

John Kelley (U.S. civil servant), acting US alternate representative to the UN (as of 2025)
John Kelley (criminal), an American criminal
John C. Kelley, American television writer and producer
John Edward Kelley (d. 1941), politician that was a U.S. Representative from South Dakota
John F. Kelly, retired general of the USMC and a former chief of staff at the White House
John L. Kelley (d. 1999), American mathematician
John William Kelley (born 1963), American serial killer
Jack Kelley (journalist), journalist at USA Today
John Kelley (Medal of Honor), got the Medal of Honor

Sports
Jack Kelley (ice hockey) (d. 2020), American ice hockey coach
John Kelley (ice hockey) (d. 1986), American ice hockey player
John J. Kelley (d. 2011), American runner, winner of the 1957 Boston Marathon; "Kelley the Younger"
Johnny Kelley (d. 2004), American runner, winner of the 1935 and 1945 Boston Marathons; "Kelley the Elder"