Deegan is an Irish surname. Notable people with the surname include:
Alfie Deegan (born 2001), English actor Annabel Deegan, executive producer of Amanpour Brian Deegan (lawyer) (born 1955), Australian political activist Cornelius S. Deegan (1901–1967), American politician Denby Deegan (1941–2018), American architect Denise Deegan (born 1952), English novelist and playwright Donna Deegan (born 1961), American journalist Gene A. Deegan (born 1936), American major general John Deegan (politician) (1845–1906), Irish politician Marilyn Deegan, British scientist and historian Mike Deegan, British healthcare chief executive Patricia Deegan, American psychologist Peter Deegan (born 1970), American attorney Robert P. Deegan, American academic administrator Tim Deegan, Canadian video jockey William Francis Deegan (1882–1932), American architect and engineer
Fictional characters John Deegan (Fair City), detective in Fair City Prunella Deegan, voiced by Nicky Rapp in Arthur's Pet Chase Terry Deegan, character in Fair City T. J. Deegan, character in Fair City
Sports Andrew Deegan (born 1995), Australian rugby player Bill Deegan (born 1935), American baseball umpire Brian Deegan (rider) (born 1974), American motorcycle racer Davinder Singh Deegan (born 1946), Kenyan field hockey player Dummy Deegan (1874–1957), American baseball player Gary Deegan (born 1987), Irish footballer Haiden Deegan (born 2006), American motorcycle racer Hailie Deegan (born 2001), American racing driver Jim Deegan (born 1933), British field hockey player Maurice Deegan (born 1972), Gaelic football referee Max Deegan (born 1996), Irish rugby player Mick Deegan (born 1964), Irish football manager Millie Deegan (1919–2002), American baseball player Paddy Deegan (born 1995), Irish hurler
See also Degan (surname) Major Deegan Expressway – named after William Francis Deegan Murder of Edward Deegan