Duffy (nickname)

Duffy is the nickname of:


 * Duffy Ayers, English portrait painter born Elizabeth (Betty) Fitzgerald in 1915
 * Duffy Cobbs (born 1964), American former football player
 * Duffy Daugherty (1915–1987), American college football player and Hall of Fame coach
 * Duffy Dyer (born 1945), American former Major League Baseball player
 * Duffy Jackson (1953–2021), American jazz drummer
 * Duffy Lewis (1888–1979), American Major League Baseball player
 * Norma "Duffy" Lyon (1929–2011), American farmer and butter sculptor