The 100 Most Famous Irish Men of All Time

Irish men have left their mark on the world as saints, kings, writers, scientists, explorers, political leaders, musicians, actors, and sports stars. This list runs from Saint Patrick and Brian Boru to four Nobel Prize–winning writers and modern names from film, music, and sport. We include people from across the island of Ireland, including Northern Ireland, which is part of the United Kingdom. People from Northern Ireland may identify as Irish, British, Northern Irish, or more than one of these, and a few people on the list were born elsewhere but are widely identified as Irish; we note this where it applies.

The list doubles as baby name inspiration. Names like Seamus, Liam, Cillian, and Rory are tied to some of these famous men, and you will find a table of names from the list with meanings and pronunciation guides.

The 100 Most Famous Irish Men of All Time

The list mixes historical figures and modern names across politics, the arts, science, sports, and more; numbers are for easy reference, not a strict ranking.

Baby Name Ideas Inspired by Famous Irish Men

These given names all come from people on the list above. Irish spelling does not always match English sounds, so the pronunciation guides show the most common way to say each name.

Irish Naming Traditions

Many Irish surnames began with Gaelic prefixes. Ó (anglicized as O’) means grandson or descendant, and Mac means son. In the Irish language, women’s surnames change form: a daughter uses Ní or Nic, as in the poet Nuala Ní Dhomhnaill, while a married woman may use forms like Bean Uí or Mhic.

Most Irish given names exist in two versions, an Irish-language form and an English form, such as Seán and John, Pádraig and Patrick, or Máire and Mary. Saints’ names have been favorites for centuries, especially Patrick, Brigid, Brendan, Colm, and Kevin, and names from Irish legend, such as Niamh, Oisín, and Fionn, are popular too.

A traditional custom in many families was to name the first son after his paternal grandfather and the first daughter after her paternal grandmother. Irish spelling follows its own rules: bh and mh often sound like v, and the accent mark called the fada lengthens a vowel and is part of the name, so Seán and Sean are spelled differently even when they sound much the same.

How to Use These Names for Your Baby

• Decide whether you want the Irish spelling or an anglicized one. Pádraig and Seán look lovely with the fada, but you may face more spelling questions in the U.S.
• Say the name out loud with your last name and share it with a few people to see how they read it. Names like Saoirse and Caoimhe are well loved but often mispronounced at first.
• Use an Irish name in the middle spot if you want a simpler first name. Our middle name ideas include plenty of combinations.
• Honor a family member by choosing the Irish form of their name, such as Seán for John or Seamus for James.
• Find hundreds more options in our list of Irish baby names, and use our guide on how to choose a baby name to settle on a favorite.

Finding the Right Name

Choosing a name linked to a saint, a poet, or a champion gives your child a story to share for years to come. For more ideas from the same heritage, see our list of the most famous Irish women of all time.

Emma Carter

Hello! I’m Emma Carter, born in 1990, and a passionate child development specialist. Alongside my work, I have a deep love for helping parents discover beautiful and meaningful baby names. I believe a name is more than just a label — it’s the beginning of a child’s story. I draw inspiration from languages, cultures, traditions, and even the hidden meanings behind names to help find the perfect fit for every little one’s bright future.