Iarlaith
- Gender
- Boy
- Say it
- EER-la
- Origin
- Irish
- UK rank, 2025
- #1,613 for boys
Big in Northern Ireland
Iarlaith is a boys' name of Irish origin. In 2025 it ranked 1,613th for boys in the UK (17 babies).
What does Iarlaith mean?
Irish: anglicised as Jarlath
Saint Iarlaith (Jarlath) founded a monastic school at Tuam in the 6th century and is its patron saint.
Is Iarlaith a girl's or a boy's name?
Iarlaith is a boys' name. In 2025, it was given to 17 boys in the UK. Too few girls were given it to be listed.
How popular is Iarlaith in the UK?
- Rank in 2025
- #1,613among boys
- Babies in 2025
- 17about 1 in 18,000 boys
- Five-year trend
- Rising fastup 193% in five years
- Same name in a class
- under 1%chance among 15 boys
In 2025, 17 boys in the UK were named Iarlaith, making it the 1,613th most popular name for boys. Five years earlier, in 2020, it was 2,819th.
It has been given to more boys each year for the last 3 years. 2025 had the most boys named Iarlaith of any year since it first appeared, in 2008.
Half of all the boys named Iarlaith in the UK since 1996 were born between 2019 and 2024, the years shaded on the chart below.
Among boys in 2025, it was 138th in Northern Ireland.
Iarlaith in the UK, year by year
| Year | Boys | Rank |
|---|---|---|
| 2025 | 17 | #1,613 |
| 2024 | 16 | #1,664 |
| 2023 | 8 | #2,691 |
| 2022 | 7 | #2,922 |
| 2021 | 8 | #2,619 |
| 2020 | 7 | #2,819 |
| 2019 | 7 | #2,878 |
| 2018 | 0 | – |
| 2017 | 9 | #2,461 |
| 2016 | 0 | – |
| 2015 | 4 | #4,086 |
| 2014 | 0 | – |
| 2013 | 0 | – |
| 2012 | 1 | #6,332 |
| 2011 | 0 | – |
| 2010 | 0 | – |
| 2009 | 3 | #4,691 |
| 2008 | 1 | #5,936 |
Names like Iarlaith
Names given in the same years and the same naming tradition, with a similar sound.
Rowan Finn Ronan Brody Rory Conan Rian Callan Darragh Caelan Cody Cillian
More Irish names
Oscar Maeve Aiden Ryan Nolan Quinn Orla Erin Connor Declan Casey Kennedy Lennon Kevin Kian Sloane
Sources
Figures from Baby names in England and Wales (Office for National Statistics), Babies' first names (National Records of Scotland) and Baby names (Northern Ireland Statistics and Research Agency). Nameling last updated them on 20 October 2026. How the figures are worked out, and the data to download.
To cite this page: Nameling, “Iarlaith: name meaning, origin and popularity”, https://www.nameling.co.uk/names/iarlaith, updated 20 October 2026.