Surname Variations (O)


  • Oakes,  Oaks, Oates, Oakkes, Oats, Oatt, Oak
  • Oakland, Oaklan, Oaklin
  • Oakley, Oalky, Oaklie
  • Oakwood, Oakwoods, Oakkwood
  • Obama, Obamas, Obamal
  • Abando, Obando, Obandeo
  • O’Baoghill, Boyle, Boile
  • Oberly, Eberle, Eberly, Epperly, Oberle, Oberlin
  • Obert, Oburt, Obertt
  • Oberthier,  Oberdeer, Oberdier, Overdeer
  • O’Beirne, O’Burne O’Berne
  • O’Berg, O’Burg, OBert
  • Oberlin, Oberline, Oberlind
  • O’Berst, Obar, Upper
  • O’Berti, Uberto, O’Bert
  • O’Boyle. Boyle, Boile
  • O’Bradaigh, Brady, Bradey
  • O’Brdain, Braden, Bradan
  • O’Broin, Breen, Brean
  • OBraonain, Brennan, Brennon
  • O’Briain, O’Brien, O’Brien, Brian
  • O’Broin, O’Byrne, O’Broyn
  • O’Buachalla, Buckley, Buckly
  • O’Byrne, Bran, Bron
  • Ochoa, Wolf, Wolfe, Otxoa
  • O’Caiside, Cassidy, Cassedy
  • O’Callaghan, Callahan, Callaham
  • O’Caoimh, Keefe, Keefer
  • O’Caoimhain, Cavan Cavane
  • O’Caoindealbhain, Quinlan, Quinlon
  • O’Caolaidhe, Keeley
  • O’Cathain, Cathan, Cathen
  • O’Cathalain, Callan, Callon
  • O’Cathasaigh, Casey, Casie
  • O’Ceallachain, Callahan, Callihan
  • Ocean, O’Sean, Ocen
  • O’Ceallaigh, Kelly, Kelley
  • O’Cearmada, Carmody, Carmady
  • O’Ceithearnaigh, Kearney, Kearny
  • O’Ciardha, Carey, Carrey
  • O’Cinneidigh, Kennedy, Kenndy
  • O’Clerigh, Clerke, Clarke
  • O’Clery, O’Clerigh, Clerke
  • O’Cnaimhin, Cnamh, Bone
  • O’Cochlain, Cochllan, Cape, Hood
  • O’Coigligh, Quigley, Quigly
  • O’Coileain, Coilean, Coileane
  • O’Camhraidhe, Camhraidhe,
  • O’Conaill, Connell, Connall
  • O’Conaire, Conroy, Conray
  • O’Conchobair, O’Connor, Connor
  • O’Conghalaigh, Connolly, Connally
  • O’Connell, Connell, Connall
  • O’Connor, O’Conchobhair, Conchobar
  • O’Corcrain, Corcoran, Corocoran
  • O’Corra, Corra, Spear
  • O’Corraidhin, Curran, Curron
  • O’Cuaig, Quigg, Quig
  • O’Cuana, Cooney, Couney
  • O’Cuidighthigh, Cuidightheach
  • O’Cuilinn, Cuileann, Holly
  • O’Cuinn, Quinn, Quin
  • O’Cuinneagain, Cunningham, Cunningam
  • O’Cuirc, Quirke, Quirk
  • O’Dalaigh, Daly, Daley
  • O’Damhain, Damhan Damham
  • O’Deasmhumhnaigh, Desmond, Dasmond
  • Odell, Odel, O’dell, Odle, Wad, Hill
  • Odenton, Odenston, Odentan, Odenson
  • Odenwelder, Oddenwelder, Odenwilder
  • O’Deoradhainn Doran, Dorin
  • O’Doimasaigh, Dempsey, Dempsy
  • O’Dochartaigh, Doherty, Dorharty
  • O’Doibhilin, Devlin, Devlan
  • O’Doirnain, Durnin, Duren
  • Odom, Odon, Odomn, Odum
  • O’Domhnaill, O’Donnell, O’Donnall
  • O’Donnchadha, Donnoghue, Donnohue
  • O’Donndubhain, Donovan, Donavan
  • O’Donnell, ODomhmaill, Domhnall
  • O’Donnghaile, Donnelly, Donnelley
  • O’Doyle, Doyle, Doile, O’Dubhghaill
  • O’Dubhain, Duane, Dwane
  • O’Dubhshlain, Dolan, Dollan
  • O’Dubhshlaine, Delaney, Delany
  • O’Duhthaigh, Duffy, Duffey, Dark
  • O’Duibh, Dark, Dubh
  • Oelberg, Oil Hill, Berg, Mountain, Hill
  • O’Fallamhain, Fallon, Fallan
  • O’Faolain, Whelan, Whelon
  • O’Fearghail, Farrell, Farrall
  • Offermans, Offerman, Donation
  • O’Fioagain, Finnegan, Finnigan
  • O’Fionnain, Fannon, Fannan
  • O’Flannagain, Flanagan, Flanigan
  • O’Flannghaile, Flannery, Flannary
  • O’Floinn, Flynn, Flinn
  • O’Foghladha, Foley, Folley
  • O’Frighil, Friel, Freil
  • O’Gallchobhair, Gallagher, Gallager
  • Ogawa, Small, River, Stream
  • Ogden, Oggden, Ogten, Oak, Valley
  • Ogilvie, Ogilvy, Ogilbie
  • Ognianov, Ognyanov, Ognyenov, Ognyan
  • O’Gormain, Gorman, Gorrman, O’Gorman
  • O’Grada, Grady, Gradie
  • Ogtrop, Ochtrup, Town in Germany
  • Oh, Wu, Korean Form
  • O’Hanegan, O’Hannagain, Hannagan, O’Hannigain, OHannegan
  • O’Haodha, Hayes, Hays
  • O’Haonghuis, O’Hennessy, Hennessy, Hennessee
  • O’Heaghra, O”Hara, Hara
  • O’Heachthughearna, Echthigern
  • O’Hearn, O’Heachthighearna, O’Herns
  • O’Heideain, Eidean, Clothes
  • O’Heideain, Hines, Hynes
  • O’Heidin, Clothes, Armour
  • O’Heidirsceoil, Driscoll, Driscall
  • O’Hicidhe, Hickey, Hicky
  • O’Hlfearnain, Heffernan, Heferman
  • O’Hogain, O’Hogan, Hogan
  • O’Huiginn, O’Higgins, Higgins
  • Oilfield, Oilfeild, Oilfeld
  • Ojeda, Ojeda River, Folia, Leaves
  • Okabe, Hill, Ridge
  • Okamoto, Root, Base
  • Okamura, Hill. Ridge of Town or Village
  • O’Kane, O’Cathain
  • Okazaki, Hill or Ridge of Cape or Peninsula
  • O’Keefe, Keefe, Keef
  • O’Laoghaire, O’Leary, O’Learie
  • O’Leannain, O’Lennon, Lennon
  • O’Leastro, Wild Olive
  • Ole, Son of Ole
  • Olin, Ollin, Olen
  • Oliveira, From Oliveria in Portugal
  • Oliver,  Olivier, Olliver
  • Oliversen, Oliverson, Oliversson, Olivier
  • Olmstead, Olmsted, Olmsteade
  • Olney, Olny, Ollney
  • Olofsdotter, Olofsdatter, Daughter of Olof
  • Olofsson, Son of Olof
  • Olson, Ollson, Olsen, Son of Ole
  • O’Luain, O’Lane, Lane
  • O’Madaidhin, Dog, Mastiff
  • O’Malley, O’Maille, Malley
  • O’Manachain, O’Monahan, Monahan
  • O’Maolagain, O’Milligan, Milligan
  • O’Maolain, O’Mullen, Mullen
  • O’Maonaigh, O’Mooney, Mooney
  • O’Marcaigh, O’Markey, Markey
  • O’Mathghamhna, O’Mahoney, Mahoney
  • O’Meadhra, O’Meara, Meara
  • O’Mochain, O’Mohan, Mohan
  • O’Muircheartach, O’Moriarty, Moriarty
  • O’Muireadhaugh, O’Murray, Murray
  • O’Murchadha, O’Murphy, Murphy
  • Onderdonk, Onderdonck, Underdonk
  • Ongaro, Ungaro, Ongaroe
  • O’Neal, O’Neale, O’Neil, O’Neill, O’Niall
  • O’Nuallain, O’Nolan, Nolan
  • Oorschot, VanOirschot, Oirschot
  • Opeyemi,Opeyemie, Oppeyemi
  • Oppenhiemer, Oppenhiem, Openheim
  • O’Proinntigh, Prunty, Proinntigh
  • Opie, Oppie, Opey
  • Oquendo, Okondo, Oquendoe
  • O’Quinn, O’Quin, O’Quinne
  • O’Rabhartaigh, O’Rafferty, Rafferty
  • O’Raghailligh, Raghailligh, Raghailigh
  • Orange, Orangge, Orang
  • Orban, Orrban, Orbane
  • Orcutt,  Orcut, Orrcut
  • Ordway, Ordly, Ordley
  • O’Reilly, Reilly, Reily
  • Orellana, Aureliana, Aurelius
  • Orendorph,  Orendorff, Orndorff, Ohrendorph, Orndoph
  • Orenstein, Orenstine, Hornstone
  • O’Riagain, O’Reagan, Reagan
  • O’Rian, Oriain, Rian
  • O’Rinn, Rinn, Star
  • O’Rioghardain, O’Riordan, Riordan
  • Oriol. Orriol, Orioll
  • Orlando, Orelando, Orlandoe
  • Orlov, Oryal, Eagle
  • Orman, O’Ruaidh, Ruaidh, Ormond, Ormonde
  • Orne, Orrne, Orn
  • O’Rodagh, Rodagh, Rodach
  • Orosz, Orroz, Oross
  • Orozco, Wisdom, Bringer of Wisdom
  • Orr, Ore, Or, Oar, Orre, Oher
  • Orsini, Ursus, Lettlebear
  • Ortega, From Ortega in Spain, Ortiga
  • Orth, Orthe, Oarth
  • Ortiz, Orti, Son of Orti
  • O’Ruadhain, Ruadhain, Ruadhan
  • Orville, Orvill, Orvil
  • Orwell, Orwelle, Orwel
  • Osborn,  Osborne, Osbourn, Osbourne, Osburn, Ozburn, Ozborne, Ozborn, Ausburn
  • O’scolaidhe, Scolaidhe, Scholaidhe
  • O’Seachasaigh, O’Shaughnessy, Shaughnessy
  • O’Seaghdha, O’Shea, Shea
  • O’Seanain, Seanain, Shannon
  • O’Seighin, Seighin, Seigene
  • O’Shields, Ocheals, Osheals
  • Osgood, Osgoode, Ozgood
  • Oshiro, Oshero, Castle
  • O’Sioda, Sioda, Silk
  • O’Sirideain, O’Sheridan, Sheridan
  • O’Sluaghadhain, O’Sloan, Sloan
  • Osmonov, Osmon, Son of Osmon
  • Ostberg, Eastberg, Mountain
  • Oster, East, Eastside
  • Ostergaard, Ostergard, Enclosed
  • Osterhout,  Osterhouht, Osterhoudt, Oosterhoudt,
  • Ostrander,  Ostranter, Ostander
  • Ostrom, Ostroms, Ostrome
  • Ostrowski, Ostrosky, Ostro, Riverisland
  • Oswald, Oswold, Osswald, Oswalt
  • O’suaird, Suaird, Suart, Sigurd
  • O’Suileabhain, O’Sullivan, Sullivan
  • O’Tadhgain, O’Teagan, Teagan
  • O’Taidhg, O’Teague, Teague
  • O’Teachain, O’Teahan, Teahan
  • Otero, Ottero, Hill
  • O’Tighearnaigh, OTierney, Tierney
  • Otis, Ottis, Son of Ode
  • O’Toole, Toole Toule, Tuathal
  • O’Treasaigh, O’Tracey, Tracey
  • Ottinger, Ottingner, Otinger
  • Ott, Otto, Otten, Ottosen
  • Otty, Otte, Othy
  • Outterridge, Uhtric, Oterridge
  • Otxoa, Ottxoa, Wolf
  • Oursler, Ursel, Oberursel
  • Outlaw, Offlaw, Outlaws
  • Overfield,  Overfeld, Overfelt, Overfields
  • Overholtzer, Overholt, Oberholtzer
  • Overmyer, Obermeyer, Obermier, Overmeier, Overmier
  • Overstreet, Overstreets, Oberstreet
  • Overturf, Overtauf, Overterf
  • Ovesen, Ove, Son of Ove
  • Owings, Ouings, Oweings
  • Owens,  Owen, Owan, Owings, Owing. Owain
  • Owston, Ouston, Owsten
  • Oxendine, Oxendin, Ozendine
  • Oxford, Oxforde, Oxfford
  • Oxon, Oxan, Oxin
  • Oyler, Eyler, Oiler
  • Ozols, Ozolins, Ozolinsh
  • Ozwald,  Ozwalt, Oswalt, Oswald, Ozwall