Tiarnan
- Gender
- Boy
- Say it
- TEER-nan
- Origin
- Irish
- UK rank, 2025
- #1,473 for boys
- Style
- Big in Northern Ireland
Tiarnan is a boys' name of Irish origin, meaning “little lord”. In 2025 it ranked 1,473rd for boys in the UK (19 babies).
What does Tiarnan mean?
Irish: from Tighearnan, a pet form of tighearna, lord
“little lord”
Tigernan Ua Ruairc was a 12th-century king of Breifne whose feud with Diarmait Mac Murchada helped prompt the Norman invasion of Ireland.
Is Tiarnan a girl's or a boy's name?
Tiarnan is a boys' name. In 2025, it was given to 19 boys in the UK. Too few girls were given it to be listed.
How popular is Tiarnan in the UK?
- Rank in 2025
- 1,473rd among boys
- Babies in 2025
- 19 about 1 in 16,000 boys
- Five-year trend
- Steady up 18% in five years
- Same name in a class
- under 1% chance among 15 boys
In 2025, 19 boys in the UK were named Tiarnan, making it the 1,473rd most popular name for boys. Five years earlier, in 2020, it was 2,052nd. Its busiest year was 1999, with 60 boys.
Half of all the boys named Tiarnan in the UK since 1996 were born between 2000 and 2014, the years shaded on the chart below.
In 2025, 57 boys in the UK were given Tiarnan or a name that sounds the same. With every name's spellings counted this way, that ranks #635, up from #1,473 for this spelling alone.
- Tiernan 38
- Tiarnan 19
Among boys in 2025, it was 120th in Northern Ireland.
Tiarnan in the UK, year by year
| Year | Boys | Rank |
|---|---|---|
| 2025 | 19 | #1,473 |
| 2024 | 21 | #1,355 |
| 2023 | 18 | #1,507 |
| 2022 | 15 | #1,708 |
| 2021 | 17 | #1,547 |
| 2020 | 11 | #2,052 |
| 2019 | 19 | #1,412 |
| 2018 | 19 | #1,416 |
| 2017 | 21 | #1,331 |
| 2016 | 19 | #1,458 |
| 2015 | 11 | #2,127 |
| 2014 | 14 | #1,743 |
| 2013 | 20 | #1,347 |
| 2012 | 16 | #1,622 |
| 2011 | 15 | #1,619 |
| 2010 | 24 | #1,170 |
| 2009 | 12 | #1,852 |
| 2008 | 28 | #1,020 |
| 2007 | 31 | #920 |
| 2006 | 36 | #784 |
| 2005 | 38 | #742 |
| 2004 | 33 | #763 |
| 2003 | 34 | #700 |
| 2002 | 42 | #556 |
| 2001 | 52 | #456 |
| 2000 | 50 | #471 |
| 1999 | 60 | #412 |
| 1998 | 49 | #473 |
| 1997 | 45 | #476 |
| 1996 | 12 | #1,146 |
Names like Tiarnan
Names given in the same years and the same naming tradition, with a similar sound.
Declan, Regan, Ronan, Keenan, Conlan, Keelan, Brogan, Ryan, Kenan, Rogan, Keegan, Kieran
Other spellings of Tiarnan
More Irish names
Oscar, Rowan, Rory, Maeve, Finn, Aiden, Nolan, Quinn, Orla, Cody, Erin, Connor, Casey, Kennedy, Callan, Lennon
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, “Tiarnan: name meaning, origin and popularity”, https://www.nameling.co.uk/names/tiarnan, updated 20 October 2026.