Boy’s name · Irish

Tiarnán

How to say it: TEER-nawn · /ˈtirnɑn/

Irish 'tiarna' meaning 'lord' plus diminutive - pronounced TEER-nawn, little lord.

Tiarnán was the 3,037th most popular boys’ name in the United States in 2025, given to 0 babies (Social Security Administration). Its busiest decade was the 1990s, its births are down about 33% in ten years, and it is projected to rise to #2,687 by 2030.

Updated · SSA 2025 data, published May 2026 · How we compute these figures

#3,037for boys in 2025
1 in 114,322US babies
0born in 2025
#2,687projected for 2030
1990sits peak decade
under 1 in 200chance a classmate shares it

Key facts

Key facts about Tiarnán
Rank among boys’ names, 2025#3,037
Babies born in 20250
Share of births1 in 114,322
Peak decade1990s
Change over 10 years−33%
Projected rank for 2030 (estimate)#2,687

Sources: Social Security Administration (SSA). How we compute these figures.

Its life, decade by decade

Tiarnán is a newcomer: almost all of its history is from the last forty years.

1900195020002020–25
Peak: 1 per million births, 1990s.

What goes with it

Parents who love Tiarnán also love

Nicknames

  • Tier

Honouring a Tiarnán in the family

In the classroom

In a class of 25 children born in 2025, the chance that another child is called Tiarnán is about under 1 in 200.

Around the world

This spelling is used in English, Irish.

Ireland: #260.

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