Surnames beginning with O
Olson68,467Owens61,654Obrien46,877Oliver41,245Oconnor29,654Ortiz28,138Owen25,433Olsen25,256Osborne23,949Oneill19,607Orr17,744Odonnell17,713Oneal16,396Oconnell14,587Osborn13,246Odom11,905Odell11,885Oneil11,152Ott10,369Ortega9,890Otto9,151Oleary8,602Ohara8,057Ogden7,576Orourke6,968Overton6,943Oakes6,864Oakley6,668Okeefe6,565Omalley6,311Oswald5,674Oldham5,419Ogle5,396Overstreet4,780Ochoa4,720Ouellette4,613Oglesby4,490Orlando4,421Otoole4,137Oreilly4,020Oates4,002Otero3,581Ostrander3,485Oshea3,450Osullivan3,422Olmstead3,132Olds3,078Orozco3,064Otis3,026Outlaw2,913Oden2,825Ostrowski2,791Osburn2,774Oliva2,661Oliveira2,634Orth2,634Ogrady2,610Overby2,606Oberg2,603Olszewski2,503Osgood2,500Oaks2,441Ochs2,348Oliphant2,308Oster2,275Olive2,231Orton2,126Overman2,110Ohare2,104Olinger2,035Owings2,020Obryan1,989Orcutt1,954Ocasio1,878Osteen1,870Oswalt1,868Ojeda1,854Oxford1,788Omeara1,787Olivas1,782Omara1,759Oquinn1,753Ogletree1,720Olin1,694Oxley1,680Ornelas1,667Ostrom1,655Oxendine1,651Odum1,637Olivier1,612Otten1,612Oday1,584Otte1,559Ober1,551Oleson1,510Osorio1,469Ogilvie1,465Olmsted1,460Ousley1,455Ormsby1,454Olivares1,451Olivo1,435Osterman1,432Orlowski1,418Odle1,401Orange1,367Olvera1,353Oyler1,345Oldfield1,319Obryant1,315Orndorff1,308Oman1,289Olney1,277Oloughlin1,268Ogburn1,265Oppenheimer1,262Osman1,250Oboyle1,233Ottinger1,233Odea1,223Olsson1,218Ontiveros1,207Olivarez1,172Ogg1,161Orman1,154Owsley1,151Oliveri1,141Ordway1,135Oshaughnessy1,132Ohearn1,125Overcash1,122Offutt1,119Oldenburg1,116Olivieri1,104Ohalloran1,086Oney1,076Oddo1,072Obannon1,058Oquendo1,056Overholt1,053Orsini1,050Okelley1,031Ong1,026Oppenheim999Ortman995Oehler992Olivera980Oconner969Ocallaghan959Olander949Odaniel948Oller946Olguin944Orear942Overbey940Ocampo937Opperman928Oberle927Orme923Obert911Ohl911Ohler905Ohlson902Otey897Oestreich893Orosco893Oshiro885Overturf877Organ874Ormond869Orchard849Orta846Ogorman843Okane843Ohman831Ogren827Obanion822Outland822Owensby818Olesen817Oh810Ohm809Ort793Ownby792Ofarrell788Orris778Overly778Osterhout777Overmyer776Ordonez774Owenby774Olah768Ollis762Orzechowski749Orrell746Osterberg742Oatman734Ogara731Oberlin721Orenstein721Oberlander716Odowd712Oshields710Overall710Ohanlon703Ortego693Ostendorf689Orban680Olden671Oberholtzer670Orosz669Osuna669Orona666Orwig665Opitz664Onorato661Ostlund661Ozuna661Orloff653Ohagan651Ochsner648Oram647Orner647Okamoto645Ostrow643Okeeffe640Odegard635Oyer633Ozment633Opp632Otwell629Olaughlin617Officer616Oberry599Overfield599Oltman597Overbeck595Obrian591Oldaker588Oles588Ouzts587Oberman585Olcott583Osinski580Orvis579Ohern575Obermeyer571Ost570Overholser570Oren566Ogan564Osowski564Obriant546Oberst543Oviatt537Oliveras534Ottman534Oubre533Orem532Obregon530Olejniczak528Old524Oda523Orrick518Ortner514Ornstein512Orellana509Ostroff509O'Brien508Oser505Odegaard504Ownbey504Olmos501Oertel499Ours499Okelly496Oja495Otterson495Obyrne489Onstott489Oliverio488Overbay486Ouellet483Occhipinti481Okada481Ovalle481Ore478Odonoghue477Osterhoudt474Oakland472Oros471Osby465Overland462Ogawa460Oler458Oesterle456Okun454Ormiston454Olmo451Oviedo450Oder448Oflaherty448Odwyer447Orsi447Ota445Oien440Oiler437Ono437Ocker435Otts435Oxner432Oelke430Osler429Osmond428Onken427Osmun426Otter426Oyola425Outen424Outten423Ohlinger421Odriscoll418Ogles417Olenick416Orgeron415Oatis413Over413Osberg410Onley409Odonovan406Ohair405Ostby405Oglesbee403Ogata401Oslund400Olivero399Opie399Ouimet399Opdyke393Onan391Osier389Oakman387Oats387Oropeza387Opper384Ory384Otteson384Orlandi383Olmeda380Ottaviano380Orsak379Orso378Osbourn378Ouimette376Ohlsen375Ortmann371Ostler365Ordaz361Ojala359Opsahl358Ord358Oetting356Oravec356Ostroski355Ostrem353Olstad351Odoms350Ohaver350Orf347Oregan345Ostertag344Oppelt341Ostermann340Ollie339Ormsbee339Oplinger337Oriley337Onofrio336Offord335Opel335Ohanian334Okamura332Okazaki332Olofson332Oak331Orum328Ocheltree326Osten326Odette321Osmundson321Ooten320Osterloh320Overbaugh320Opfer319Obrecht318Okey316Oquin316Osbourne316Offerman315Osmer314Obermeier313Ossman313Ostberg313Ockerman312Oettinger312Orsborn312Overley312Obarr311Opheim311Orzel311Osmon311Omer310Odgers309Obermiller308Omohundro307Ottley305Orefice304Ortegon304Ortlieb304Ornellas303O'Connor302Ostman301Oleksy300Otting300Oltmanns299Ogborn298Omar298Orndoff298Oppel296Orendorff295Omelia294Older292Openshaw291Ottoson291Ohrt290Oyster289Okon287Oelschlager285Osiecki285Obenchain284Orrico283Oppermann282Orick282Obst280Olberding279Olkowski279Oscar279Ozga278Ottesen276Oguin275Ohmer275Olmedo275Ordoyne273Ondo272Ohlendorf271Olender271Olague270Oharra269Obey268Ostrum265Offer263Olea263Ollila263Ouderkirk263Ozburn263Orser262Orsburn261Opalka260Odem259Oestreicher259Olafson259Oldani259Oberly258Oelkers257Oxman257Oesch256Olver256Olear254Olexa253Okeson252Ollison252Orzech252Osment252Odland251Oldroyd251Onderdonk251Orlich251Ottaway251Orlick249Ortiz-Rivera249Offield248Offner248Onstad248Ocain247Overfelt247Ognibene246Oyama246Obradovich245Odden245Orrison245