Return to Oxfordshire Surname List page
| Surname | Time Period | Place | Submitter |
| OADES | all | Shutford, Fritwell | Christine Tabler |
| OAKEY | any | Alvescot/Clanfield/Black Bourton | Richard King |
| OAKLEY | 1500- 1750 | ST. THOMAS, OXFORD CITY | Frank W. Scott |
| OAKLEY | mid 1800s | Brill | Brenda Zadoroznij |
| OAKLEY | 1800 - 1900 | Cholsey | Roger Heeley |
| ODELL | 1663-1690 | not known | J.L. Odell |
| ODIEN | 1754 | Colonial America | Dawn Odien |
| ODLEY | 15:20 | any | Julia |
| OGBORN | 1700- | Shiplake,Binfield Heath | Martin Langley |
| OGBORN | before 1900 | All | Martin Langley |
| OGBOURN | 1700- | Shiplake,Binfield Heath | Martin Langley |
| OGBOURNE | 1700- | Shiplake,Binfield Heath | Martin Langley |
| OGBURN | 1700- | Shiplake,Binfield Heath | Martin Langley |
| OGDEN | 1994-1998 | Charlbury | Tom |
| OLD | Crowmarsh, | Carol Trollope | |
| OLDAKER | any | any | Alan Heard |
| OLDHAM | 1956 | Oxford | Ms V A Oldham |
| OLDHAM | 1956 | Burford | Ms V A Oldham |
| OLIVER | pre-1680 | Launton | Donnette Smith |
| OLIVER | Pre 1900 | Stonesfield | Neil Thaler |
| OLLENBUTTEL | Headington | Patricia Murphy | |
| OLLNEY | 1066-present | Southern Oxford | Nina L. Olney |
| OLNEI | 1066-present | Southern Oxford | Nina L. Olney |
| OLNEY | 1066-present | Southern Oxford | Nina L. Olney |
| ONG | eons before 2000 | Helengrace Perez-Ong | |
| ONION | Pre 1820 | Yelford / any | Chris Etheridge |
| ONLEY | 1066-present | Southern Oxford | Nina L. Olney |
| ONSLOW | 1900's | Banbury | Sherry MacBeth Onslow |
| OPIE | 1831-855 | Bladon | Greer Vincent |
| ORCHARD | 1450-1550 | Oxford (City) and Kidlington | John Orchard |
| ORDWAY | 1760 | Deddington | Donna Lonon |
| ORGAN | any/all | Cowley St John and other | Jill Muir |
| ORLEDGE | Headington | Jo Britten | |
| ORMEROD | 1860 -1900 | jericho | Jo Ormerod |
| ORPWOOD | 1550-1880 | Bampton | Michael Daldry |
| ORPWOOD | 1600 - 1700 | Bampton | M J Young |
| ORPWOOD | 1540 - 1900 | Bampton, Abingdon, Oxford (city) | Graham Orpwood |
| ORPWOOD | 1500-present | City of Oxford, Thame | Graham Orpwood |
| ORPWOOD | c. 1721 + | Bampton | Linda Dutton |
| ORSBORN | pre1860 | Ambrosden/Banbury/Hook Norton/Southam/Later of Leamington | G |
| ORSBOURN | Any | Chipping Norton | Pat Armer |
| ORTON | up to 1900 | anywhere in Oxfordshire | Paul Orton |
| OSBALDESTON | 1500 - 1790 | Chadlington, Woodsotck, Oxford | Leon Gee |
| OSBORN | 1860-1908 | Any | Barbara I. Rowe |
| OSBORN | 1700s onwards | Chiselhampton; Stadhampton | Jemma Hayward |
| OSBORN | Any time | Any area - especially Hethe and Amrosden | Caroline O'Neill |
| OSBORNE | 1550+ | Charlton on Otmoor | Constance Stanley |
| OSBORNE | 1860-1908 | Any | Barbara I. Rowe |
| OSBORNE | 1700's | Cropredy | Bob Osborne |
| OSBORNE | 1700's | Cropredy | Bob Osborne |
| OSBORNE | Any time | Any area - especially Hethe and Amrosden | Caroline O'Neill |
| OSBURN | 1860-1908 | Any | Barbara I. Rowe |
| OSMAN | 1900 | Cowley | Jeremy Chapple |
| OSMAN | 1850 - 1900 | Ipsden | Richard Osman |
| OSMAN | 1840 | Oxford | Dave Horn |
| OSWICK | 1900 present | all areas | Roy Oswick |
| OTTER | 1850 and back | Hucknall Torkard, Nottinghamshire | Steve Otter |
| OTWAY | 1830 -1930 | Woodstock | John Bedwell |
| OVENALL | 1887 | Claire Emery | |
| OVENDEN | All | Garsington, Headington, Cowley | Hilary |
| OVENDON | 1800-1900 | Garsington | James Booth |
| OVENELL | 1600-1800 | Eynsham | Ovenell |
| OVENELL | 1700-1800 | Eynsham | Gary Ovenell |
| OVENELL | 1500 to present | Eynsham, Cassington, Standlake | Gary Ovenell |
| OVERSHOT | pre 1800 | High Wycombe | Fay Peters |
| OWEN | Pre- 1800's | Stanford in the Vale and surrounding districts | Shirley |
| OWEN | 1840 - 1900 | Claydon | Barbara M. Stokes |
| OWEN | 1847-1893 | Claydon | Rosemary Probert |
| OWEN | 1800-1900 | banbury | Heather Hudson |
| OWEN | 1840-1860 | Barford/St. Michael | Shirley Binnersley |
| OWEN | 1500 - 1700 | Deddington | Gary Moore |
| OWEN | 1480 - 1850 | Barford St Michael area, Banbury | Gary Moore |
| OWEN | 1780 - present | Chipping Norton | Dafde |
| OWEN | 1784-1849 | Helen Potter | |
| OWEN | 1600 to 1898 | Chipping Norton | Roger Owen |
| OWEN | 1500 to 1800 | Barford St Michael | Roger Owen |
| OWEN | 1750 - 1900 | Oxford Canal (South) | Barrington John Owen |
| OXFORD | 1850-1870 | ALL | D. Culbert |
| OXFORD | 1500-1600 | unknown | Pam Oxford Williams |
| OXFORD | 1800's | Any | Joanne |
| OXFORD | any | any | Sara M Oxford |
| OXLADE | All | All | Susan M. Rogers |
| OXLADE | 1720 - 1890 | Hambledon | May Lanchbury |
| OYLY | 1066-present | Southern Oxford | Nina L. Olney |