Duddy

Duddy is a surname. Notable people with the surname include:


 * Brendan Duddy (1936–2017), businessman from Derry, Northern Ireland, who played a key role in the Northern Ireland peace process
 * John Duddy (born 1979), Irish middleweight professional boxer
 * Patrick Duddy, the United States Ambassador to Venezuela
 * Sammy Duddy (1945–2007), became a leading member of the Ulster Political Research Group