The Most Popular Last Name in Ireland, Ranked

Choose the last name you think is the most popular!

Author: Gregor Krambs
Updated on Jul 18, 2024 06:59
Knowing the most popular last name in Ireland can significantly enhance one's understanding of the cultural and historical influences shaping the region. For anyone researching genealogy, settling into a new community, or simply curious about Irish heritage, such rankings provide a clear picture of familial lineage trends and social structures across the country. This evolving list not only reflects the current societal preferences but also preserves a record of heritage that may inspire personal connections or scholarly projects. By participating in voting, users actively contribute to a resource that benefits historians, sociologists, and anyone interested in demographic trends. It's an opportunity to engage with the past and influence how history is recorded and viewed.

What Is the Most Popular Last Name in Ireland?

  1. 1


    The most common surname in Ireland, derived from the old Irish name Murchadh, meaning 'sea warrior'.
    • Origin: Irish
  2. 2


    A surname of Irish origin, meaning 'bright-headed'.
    • Origin: Irish
  3. 3


    Meaning 'descendant of Súilleabhán', which translates to 'dark-eyed'.
    • Origin: Irish
  4. 4


    Meaning 'descendant of Brian', referring to Brian Boru, the High King of Ireland.
    • Origin: Irish
  5. 5


    A common surname in Ireland, meaning 'Briton' or 'foreigner', originally denoting the Welsh.
    • Origin: Irish
  6. 6


    An Irish surname meaning 'little king' or 'illustrious'.
    • Origin: Irish
  7. 7


    Derived from the Irish Ó Conchobhair, meaning 'descendant of Conchobhar'.
    • Origin: Irish
  8. 8


    Originating from the Irish Ó Dubhghaill, meaning 'descendant of Dubhghall' with 'dubh' meaning 'black' and 'gall' meaning 'stranger'.
    • Origin: Irish
  9. 9


    Derived from the Irish name Ó Broin, meaning 'descendant of Bran' which means 'raven'.
    • Origin: Irish
  10. 10


    A very common surname of English origin but widely found in Ireland, denoting a tradesman.
    • Origin: English

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About this ranking

This is a community-based ranking of the most popular last name in Ireland. We do our best to provide fair voting, but it is not intended to be exhaustive. So if you notice something or surname is missing, feel free to help improve the ranking!


  • 191 votes
  • 10 ranked items

Movers & Shakers

Voting Rules

A participant may cast an up or down vote for each surname once every 24 hours. The rank of each surname is then calculated from the weighted sum of all up and down votes.

Additional Information

More about the Most Popular Last Name in Ireland

In Ireland, surnames hold deep cultural significance. They connect people to their ancestors and reflect the rich history of the country. Many Irish surnames have evolved over centuries, shaped by various influences, including the Gaelic language, Norse invasions, and English colonization.

The origins of Irish surnames date back to the 10th century. Before that, people were known by a single name. As the population grew, the need for more specific identifiers became clear. The Gaelic tradition adopted the use of "mac" or "Ó" prefixes, meaning "son of" and "descendant of," respectively. These prefixes helped distinguish families and lineages.

Norse invaders in the 9th and 10th centuries also influenced Irish surnames. They established settlements and intermarried with the local population. This resulted in the blending of Norse and Gaelic names. Some Irish surnames today reflect this Norse heritage.

The Norman invasion of Ireland in the 12th century brought another wave of change. The Normans introduced their own naming conventions, which often merged with existing Gaelic names. This led to the creation of many surnames still common in Ireland today.

English colonization in the 16th and 17th centuries had a profound impact on Irish surnames. The English imposed their language and naming practices on the Irish population. Many Gaelic names were anglicized, often losing their original meanings and pronunciations. This period also saw the introduction of new surnames from England and Scotland.

Despite these influences, many Irish surnames retained their Gaelic roots. These names often reflect the geography, occupation, or personal characteristics of the original bearers. For example, some surnames indicate a connection to a specific place, such as a town or a region. Others may refer to a person's occupation, like a smith or a farmer. Some surnames describe physical traits or personality characteristics.

The most popular last name in Ireland today has its roots in the Gaelic language. It has evolved over centuries, adapting to various linguistic and cultural influences. This name is common throughout the country, with significant concentrations in certain regions. It is a testament to the enduring legacy of Gaelic culture and the resilience of the Irish people.

In modern times, the popularity of this surname reflects broader social trends. Many people with this last name have emigrated from Ireland, spreading it to other parts of the world. As a result, it is now common in countries with large Irish diaspora communities, such as the United States, Canada, and Australia.

The popularity of this surname also highlights the importance of family and heritage in Irish culture. For many people, their last name is a source of pride and identity. It connects them to their ancestors and their homeland, even if they live far from Ireland.

In conclusion, the most popular last name in Ireland has a rich and complex history. It reflects the various cultural and linguistic influences that have shaped Ireland over the centuries. Today, it continues to be a symbol of Irish identity and heritage, both in Ireland and around the world.

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