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 BaseballBill Reardon (born 1941), American politician and educatorCasper Reardon (1907–1941), classical and later jazz harpistDavid Reardon, American director of the Elliot InstituteDom Reardon, British comics artist (2000AD)Jack Reardon (1914–1991), Australian rugby league footballer and writerJeff Reardon (born 1955), American baseball relief pitcherJim Reardon (born 1965), director and storyboard consultant (The Simpsons)John Reardon (born 1975), Canadian actor and former college football playerJohn Reardon (baritone) (1930–1988), American baritone and actorKen Reardon (1921–2008), Canadian professional ice hockey playerKerry Reardon (born 1949), American football playerMara Candelaria Reardon, American politician and representative (Indiana Democrats)Michael Reardon (climber) (1965–2007), American professional Free Solo Climber, filmmaker, motivational speaker and writerMichael Reardon (architect), English architect, historic building consultant, and interior designerMichael Reardon (activist) (1876–1945), New Zealand political activistNathan Reardon (born 1984), Australian professional cricketerPhil Reardon (1883–1920), American professional baseball playerRay Reardon (born 1932), retired Welsh snooker playerSteve Reardon (born 1971), Australian rugby league playerStuart Reardon (born 1981), English rugby league playerTerry Reardon (1919–1993), Canadian professional ice hockey playerThomas Reardon (born 1969), creator of Internet ExplorerWilliam Reardon Smith (1856–1935), British shipowner