BoyIrish origin2 syllables
Tiernan
Meaning: “lord”
About the name Tiernan
Tiernan is a boy name with Irish roots, meaning “lord”.
It has a unique feel. In 2025, Tiernan ranked #3840 for boys in the US, with 29 babies given the name. Its peak year since 1940 was 2007. Since 2000, 89% of US babies named Tiernan were boys.
Etymology
From Irish, meaning “lord”.
Name meaning adapted from Wiktionary (“Tiernan”) by Wiktionary contributors, CC BY-SA 4.0.
- US rank 2025
- #3840
- In 2015
- #2678
- Babies in 2025
- 29
Popularity of Tiernan, 1940–2025
Latest SSA data: 2025.
Popularity data: U.S. Social Security Administration national baby names (public domain; names given to at least 5 babies of one sex per year).
Names similar to Tiernan
Name meanings marked or linked “Wiktionary” are adapted from Wiktionary by Wiktionary contributors, CC BY-SA 4.0; each name page links its source entry.