Tiarnan
- US rank
- Unranked
- Syllables
- 2
- Peak
- #7,560 in 1998
0 babies were named Tiarnan in the US in 2025.
Found on lists
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US births per million boys, 1998–2025
Similar names
Popularity: U.S. Social Security Administration (babies with 5+ births per year).
Did you know?
A few things about Tiarnan you might not know, from US birth records. Handy for convincing a partner, or a grandparent.
- HistoryTiarnan first shows up in US birth records in 1998, the first year at least 5 babies got it. It has been in use for 27 years since.
- Best yearIts best year was 1998, when it reached #7,560.
About the name Tiarnan
Tiarnan is a boy name of Gaelic origin. It has 7 letters and 2 syllables, starting with T and ending in “-nan”. US birth records list Tiarnan for boys from 1998 to 2005, in 4 of those 8 years. Its best year was 1998, when it ranked #7,560 among boy names. It hasn't been given to 5 or more US babies in a year since 2005, so today it's a genuinely rare choice.
Origin:Gaelic names
| Decade | Babies per million | About 1 in |
|---|---|---|
| 1990s | 3.4 | 294,118 boys |
| 2000s | 1.1 | 909,091 boys |
More Gaelic boy names
- Boy name: Liam · resolute protector
- Unisex name: Owen · well-born
- Unisex name: Miles · possibly gracious
- Boy name: Ian · God is gracious
- Unisex name: Myles · possibly gracious
- Boy name: Callum · dove
- Boy name: Declan · possibly full of goodness
- Unisex name: Connor · lover of hounds
Questions about the name Tiarnan
What is the origin of the name Tiarnan?
Tiarnan has Gaelic roots in our records. Other Gaelic names include Liam, Owen, Miles.
Is Tiarnan a boy or girl name?
Tiarnan is a boy name.
How popular is the name Tiarnan?
Tiarnan is rare: fewer than 5 US boys got it in 2025, and it was last given to 5 or more in 2005. It peaked at #7,560 in 1998.