Every year, Ireland’s Central Statistics Office releases its national baby names data, and the 2025 figures paint a picture of a country navigating between the familiar and the adventurous. Rían has claimed the top spot for boys for the first time, ending a long reign at the summit, while Lily has pushed ahead to lead the girls’ chart. Across the full list, a handful of names made their debut in the top 100, and a small number of ultra-rare Gaelic names were registered by fewer than three families in the entire country. One of those — a name rooted in medieval Irish royalty and virtually unknown outside of Ireland — has drawn particular attention for its striking meaning and the confidence it takes to choose it.
Rían Tops Irish Boys Names 2025
After years of being a fixture near the top of the charts, Rían reached the number one position for boys in Ireland in 2025, according to the CSO’s annual report. The name, an Irish form meaning “little king” or derived from the Old Irish word for water, has been climbing steadily for several years. Its rise reflects a broader pattern that experts have observed across the British Isles: parents are gravitating toward shorter, phonetically clean names that carry genuine cultural weight rather than names chosen purely for their contemporary sound.
Jack’s long run at the top
For context, Jack had held the number one or number two position for boys in Ireland for the better part of a decade, making Rían’s ascent to first place a meaningful shift rather than a routine shuffle. According to experts in naming trends, the gradual decline of names like Jack and Conor from the very top of Irish charts does not signal a rejection of tradition so much as a rotation toward a different register of tradition — one that reaches further back into pre-Norman Gaelic culture and away from the anglicised names that dominated Irish birth registrations through the late twentieth century.
Lily Leads the Girls Chart
On the girls’ side, Lily moved into the top position in 2025, overtaking names that had held the leading spots in recent years. Floral names have been gaining ground across Ireland and the UK for several years, with Lily, Violet, and Iris all appearing with greater frequency in birth registration data. The preference for botanical names among Irish parents may partly reflect an international trend, but it also connects to a long history of Irish women’s names drawing on nature imagery, from rivers and landscapes to seasonal references embedded in old Gaelic verse.
Mary exits the top 100
One of the more striking data points in the 2025 figures is the exit of Mary from Ireland’s top 100 girls’ names — only the fourth time that has happened in fifty years of records. For generations, Mary was arguably the defining name for Irish Catholic girls, and its decline is a clear statistical marker of the country’s changing relationship with religious naming conventions. Experts say this does not mean Mary has disappeared — it still registers hundreds of births annually — but its fall below the top 100 threshold is a milestone that would have been almost unimaginable to an Irish family in the 1960s.
New Names Entering the Top 100
The 2025 data introduced a fresh wave of names to the top 100 for the first time. Among boys, Naoise recorded one of the most dramatic climbs, moving from outside the top 150 to inside the top 100 in a single year. Naoise is the name of a tragic hero in the ancient Irish legend of Deirdre, one of the great love stories in the Gaelic literary tradition. Its rise suggests that mythological names, long considered too obscure for mainstream use, are now actively sought by parents who want a name with narrative depth rather than one picked from a contemporary popularity list.
Raya leads the girls newcomers
On the girls’ side, Raya recorded the biggest single-year jump of any name in the 2025 data, entering the top 100 after sitting outside the top 200 the year before. The name has multiple origins — it appears in Arabic, Hebrew, and Slavic naming traditions — and its appeal in Ireland likely reflects the country’s increasingly diverse population as much as any specific cultural reference. This is one of the more interesting tensions in modern Irish baby name data: the charts are simultaneously becoming more Gaelic and more international, pulling in opposite directions at once.
The Rare Name Ríoghnach
While the top charts draw the most attention, the rarest end of Ireland’s naming data contains some of its most compelling entries. Ríoghnach — pronounced roughly as “REE-uh-nakh” — was registered for fewer than three baby girls in 2025, making it one of the most uncommon names in the country’s official records. The name comes from the Old Irish word for queen, and it carries associations with early medieval Irish royalty. A closely related name, Ríonach, appears in historical sources as the consort of one of Ireland’s ancient High Kings, giving the name a lineage that stretches back over a thousand years.
Ríona as a more accessible variant
For parents drawn to the same regal meaning but looking for a form that is easier to spell and pronounce outside of Ireland, Ríona offers a practical alternative. The variant registered around twenty births in 2025, placing it in the lower reaches of Ireland’s extended name charts. According to experts in Irish linguistic heritage, this kind of variation — where a classical form sits alongside a simplified modern derivative — is common across Gaelic naming history, and both versions carry equal cultural legitimacy even if one is far easier to spell on a school roll or a passport application.
Why Gaelic Names Are Gaining Ground
The broader trend visible in the 2025 data is a sustained and deliberate turn toward names drawn from Irish language sources. Names like Naoise, Dáire, Ríadh, and Teidí require some knowledge of Irish phonetics to pronounce correctly, and a generation ago they would have been considered too niche for widespread use even within Ireland itself. According to experts, this shift is connected to a cultural confidence in the Irish language that has been building since the 1990s, supported by the growth of Gaelscoileanna — Irish-medium schools — and a broader political and cultural rehabilitation of the language after decades of complicated history.
A name’s meaning versus its practicality
One real tension that parents choosing names like Ríoghnach or Naoise face is purely practical: these names are beautiful within Ireland but can become sources of daily frustration for a child who moves abroad or whose name is regularly mispronounced by teachers, employers, or automated systems. A limitation worth noting is that while Irish-language names are experiencing a revival, the Irish state’s own digital infrastructure — including some official forms and databases — does not always handle fada diacritical marks correctly, which can create administrative complications for children whose names include accented characters throughout their lives.
Disclaimer: The naming statistics referenced in this article are based on data published by Ireland’s Central Statistics Office for the 2025 registration year. Figures for names registered fewer than three times are reported as ranges to protect individual privacy, in line with CSO data publication standards. Pronunciation guides for Irish-language names are approximate and may vary by dialect region.
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