Tiernan
Boy name · Irish · Irish surname
Meaninglittle lord · Irish
- US rank
- #3,757
- Syllables
- 2
- Peak
- #1,728 in 2007
29 babies were named Tiernan in the US in 2025. It has climbed 941 places in five years.
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US births per million girls, 1989–2025
US births per million boys, 1985–2025
Similar names
Popularity: U.S. Social Security Administration (babies with 5+ births per year).
Did you know?
A few things about Tiernan you might not know, from US birth records. Handy for convincing a partner, or a grandparent.
- How commonAbout 1 in every 58,824 baby boys born in the US in 2025 was named Tiernan, 29 babies in all. In a typical school of 500 kids, your Tiernan would very likely be the only one.
- HistoryTiernan first shows up in US birth records in 1985, the first year at least 5 babies got it. It has been in use for 40 years since.
- Best yearIts best year was 2007, when it reached #1,728.
- TrendTiernan has climbed 941 places in the US rankings over the last five years and now sits at #3,757. Fast risers like this often keep climbing, so expect to hear it more.
- MeaningIn Irish, Tiernan means “little lord”. Our records link it to Irish and Irish surname roots.
About the name Tiernan
Tiernan is a boy name of Irish and Irish surname origin meaning “little lord”. It has 7 letters and 2 syllables, starting with T and ending in “-nan”. US birth records list Tiernan for boys from 1985 to 2025, in 38 of those 41 years. Its best year was 2007, when it ranked #1,728 among boy names. In 2025 it ranked #3,757, with 29 babies.
Origin:Irish namesIrish surname names
| Decade | Babies per million | About 1 in |
|---|---|---|
| 1980s | 2.7 | 370,370 girls |
| 1990s | 1.3 | 746,269 girls |
| 2000s | 6.5 | 154,560 girls |
| 2010s | 3.0 | 338,346 girls |
| Decade | Babies per million | About 1 in |
|---|---|---|
| 1980s | 1.6 | 641,026 boys |
| 1990s | 8.4 | 118,765 boys |
| 2000s | 33 | 30,331 boys |
| 2010s | 25 | 40,783 boys |
| 2020s | 17 | 57,526 boys |
More Irish boy names
- Boy name: Liam · resolute protector
- Unisex name: Owen · well-born
- Unisex name: Logan · little hollow
- Unisex name: Nolan · descendant of Nuallán
- Unisex name: Gael · a Gael
- Boy name: Arthur · possibly bear
- Unisex name: Ryan · little king
- Boy name: Dominic · of the Lord
Questions about the name Tiernan
What does the name Tiernan mean?
Tiernan means “little lord” in Irish.
What is the origin of the name Tiernan?
Tiernan has Irish, Irish surname roots in our records. Other Irish names include Liam, Owen, Logan.
Is Tiernan a boy or girl name?
Tiernan is a boy name.
How popular is the name Tiernan?
Tiernan ranked #3,757 for US boys in 2025, given to 29 babies. Its best year was 2007 (#1,728).