Namesakes
Fictional Characters from Television:
1 character
Declan Dunn 2000 Mysterious Ways 
Notable Actors and Entertainers:
4 actors, 1 model
Irene Dunne (a.k.a. Dunn) 1898-1990
James Dunn 1901-1967
Clive Dunn 1920-2012
Kevin Dunn 1956-
Jourdan Dunn 1990-
Olympic Medalists:
2 silver, 1 gold/silver/bronze
(silver) Gordon Dunn 1936 discus throw
(silver) Velma Dunn 1936 diving - platform
(gold/silver/bronze) Tricia Dunn-Luoma 1998; 2002; 2006 ice hockey
Oscar Award Winners:
1 actor
(actor) James Dunn 1946 A Tree Grows in Brooklyn
Rock and Roll Hall-of-Famers:
2 musicians
Donald "Duck" Dunn 1992 Booker T. & the M.G.'s
Larry Dunn 2000 Earth, Wind & Fire