Breen is an Irish surname. Notable people with the surname include:

Abs Breen (born 1979), English DJ, member of the band Five Barry Breen (born 1948), Australian footballer Benjamin Breen (born 1985), American historian of science and medicine Bobby Breen (1927–2016), American actor and singer Carol Breen (born 1986), Irish footballer Chris Breen (born 1989), Canadian ice hockey player Claire Breen, New Zealand law academic Craig Breen (1990–2023), Irish rally driver Dan Breen (1894–1969), IRA member and Fianna Fáil politician David Breen (born 1985), Irish hurler Edward D. Breen, American business executive Edward G. Breen (1908–1991), American politician Else Breen (1927–2025), Norwegian children's writer, novelist and literary scientist Gary Breen (born 1973), Irish footballer Gavan Breen (1935–2023), Australian linguist George Breen (1935–2019), American freestyle swimmer Harry Breen, Northern Irish police officer James Breen (disambiguation), multiple people Jim Breen (born 1947), American linguist Jim Breen (rugby league) (1899–1957), Australian rugby league footballer Joe Breen, Canadian football player John Breen (RAF officer) (1896–1964), World War II Royal Air Force commander Joseph Breen (1890–1965), American film censor, founded the Legion of Decency in 1934 Kate Breen (1869–1937), Irish nationalist Kelly Breen (disambiguation), multiple people Marie Breen (1902–1993), Australian Senator Michael Breen (disambiguation), multiple people Matthew Breen (disambiguation), multiple people Neil Breen (born 1958), American filmmaker and actor Olivia Breen (born 1996), British athlete Patrick Breen (born 1960), American actor, playwright and screenwriter Richard Breen (disambiguation), multiple people Shannon Breen (born 1989), American football player Suzanne Breen, Northern Ireland editor for the Sunday Tribune T. H. Breen (born 1942), American historian Walter Breen (1928–1993), numismatist and pederast Wallace Breen, a fictional character from the Half-life series of video games Vegard Breen (born 1990), Norwegian cyclist