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).
Hello, world
Tiernan
Your last name
born on your big day
7 LB 4 OZ · 20 IN
The Baby Kit
See Tiernan on a birth announcement
Birth announcements, shower invitations, nursery wall art and milestone cards, all personalized with Tiernan. Type your details once and print at home or at any print shop.
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.