O'Conner Last Name: Meaning and Heraldic Roots

The last name O'Conner is another written form of O'Connor, a well-known Irish family name. The family name meaning is “Descendant of Conchobhar”, the same as for O'Connor. O'Conner is listed among the recognised spellings of O'Connor. Regional accents shaped spellings long before dictionaries fixed them. Related forms: Conner, Connor and O'Conor.

The 2010 census count for O'Conner in the United States was 3,611, good for rank 9,048. It sits within the 10,000 most common last names in the country.

A coat of arms belongs to a particular family line rather than to everyone named O'Conner, so the heraldry linked to O'Connor is a starting point, not an automatic right. Research your O'Conner family history with a full surname report and painted coat of arms.