O Name Meaning

Variant of Korean and Chinese Oh.

Source: Dictionary of American Family Names ©2013, Oxford University Press

Similar surnames: U, Ho, Jo, To, Ko, Do, Oh, Lo, Po, Ow

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O Ethnicity Estimate

What are the common regions with the O name?

These results combine data from everyone in the AncestryDNA® database with the last name O. The Ancestry® ethnicity regions shown are top five most common on average for these people.

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  • England & Wales


  • Ireland & Scotland


  • Native American—North, Central, South


  • Germanic Europe


  • Eastern Europe & Russia


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O Family Origin

Where is the O family from?

O Family Occupations

What did your O ancestors do for a living?

In 1881, the most common O occupation in the UK was Coal Dealer. 100% of O's were Coal Dealers.

View Census data for O | Data not to scale

  • Coal Dealer


Census records can tell you a lot of little known facts about your O ancestors, such as occupation. Occupation can tell you about your ancestor's social and economic status.

O Historical Records

What O family records will you find?

Census Record

There are 934,000 census records available for the last name O. Like a window into their day-to-day life, O census records can tell you where and how your ancestors worked, their level of education, veteran status, and more.

Search 1891 UK census records for O

Passenger List

There are 103,000 immigration records available for the last name O. Passenger lists are your ticket to knowing when your ancestors arrived in the UK, and how they made the journey - from the ship name to ports of arrival and departure.

View all O immigration records

Draft Card

There are 61,000 military records available for the last name O. For the veterans among your O ancestors, military collections provide insights into where and when they served, and even physical descriptions.

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You've only scratched the surface of O family history.

O Life Expectancy

What is the average O lifespan?

Between 1977 and 2004, in the United States, O life expectancy was at its lowest point in 1985, and highest in 2004. The average life expectancy for O in 1977 was 38, and 88 in 2004.

View Social Security Death Index (SSDI) for O

An unusually short lifespan might indicate that your O ancestors lived in harsh conditions. A short lifespan might also indicate health problems that were once prevalent in your family. The SSDI is a searchable database of more than 70 million names. You can find birthdates, death dates, addresses and more.

Famous O Family Ancestors

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