Reardon is a surname of Irish Gaelic origin. It is an anglisation of the modern Irish Gaelic Ó Ríordáin, which itself in turn derived from the oiriginal ‘Ó Ríoghbhardáin’, meaning ‘’royal bard (from the Irish Gaelic words, ‘’rí’’ = king, and the diminutive form of '’bárd’)’. Notable people with the surname include:
Beans Reardon (1897–1984), American umpire in Major League Baseball
Bill Reardon (born 1941), American politician and educator
Casper Reardon (1907–1941), classical and later jazz harpist
David Reardon, American director of the Elliot Institute
Dom Reardon, British comics artist (2000AD)
Jack Reardon (1914–1991), Australian rugby league footballer and writer
Jeff Reardon (born 1955), American baseball relief pitcher
Jim Reardon (born 1965), director and storyboard consultant (The Simpsons)
John Reardon (born 1975), Canadian actor and former college football player
John Reardon (baritone) (1930–1988), American baritone and actor
Ken Reardon (1921–2008), Canadian professional ice hockey player
Kerry Reardon (born 1949), American football player
Mara Candelaria Reardon, American politician and representative (Indiana Democrats)
Michael Reardon (climber) (1965–2007), American professional Free Solo Climber, filmmaker, motivational speaker and writer
Michael Reardon (architect), English architect, historic building consultant, and interior designer
Michael Reardon (activist) (1876–1945), New Zealand political activist
Nathan Reardon (born 1984), Australian professional cricketer
Phil Reardon (1883–1920), American professional baseball player
Ray Reardon (born 1932), retired Welsh snooker player
Steve Reardon (born 1971), Australian rugby league player
Stuart Reardon (born 1981), English rugby league player
Terry Reardon (1919–1993), Canadian professional ice hockey player
Thomas Reardon (born 1969), creator of Internet Explorer
William Reardon Smith (1856–1935), British shipowner
