Reilly ( /ˈraɪli/) is an Irish surname (other forms include O'Reilly and Riley), and is derived from the Gaelic Ó Raghallaigh Sept that was based in Counties Cavan and Westmeath. Reilly is among the ten most frequently found surnames in Ireland and although they are very widespread they can be mostly found in the region of the ancestral homeland.
People with the surname Reilly include:
Alan Reilly, Irish footballerArch Reilly, American baseball playerBen Reilly, fictional comic-book characterBrandon Reilly (musician), frontman of the band "Nightmare of You"Brandon Reilly (American football), American football wide receiverBrent Reilly, Australian rules footballerCharles Herbert Reilly, English architectCharles Nelson Reilly, American actor and directorDavid Reilly (singer), American singerDianne Reilly, Australian politicianDonald Reilly, American cartoonistEdward Reilly (disambiguation), several peopleFrank J. Reilly, American illustrator and art educatorIke Reilly, American musicianJack Reilly (artist), American artistJames Reilly (disambiguation), several peopleJim Reilly, Irish drummerJohn Reilly (disambiguation), several peopleKelly Reilly, English actressKevin Reilly (disambiguation), several peopleLawrie Reilly, Scottish footballerLong John Reilly, American baseball playerMaggie Reilly, Scottish singerMal Reilly, English rugby league playerMatthew Reilly, Australian AuthorMike Reilly (umpire), American baseball umpirePaddy Reilly, Irish singerPaul Reilly (disambiguation), several peoplePauline Neura Reilly, Australian author and ornithologistRick Reilly, American sportswriterRobert D. Reilly Jr, American rear admiralSean Reilly, Louisiana businessman and former legislatorSidney Reilly, a Russian-born adventurer and Secret Intelligence Service agentThomas Reilly (disambiguation), several people named Thomas, Tom and TommyTomás Francisco Reilly (1908-1992), American-born Catholic Bishop of San Juan de la Maguana, Dominican RepublicVini Reilly, British post-punk musicianWilliam K. Reilly, American company director