Tools / Baby names / T

Tiernan

Boy

Meaning of Tiernan: Irish: 'little lord'

Tiernan is a boy's name most strongly associated with Irish naming. It has 7 letters and 2 syllables, and it is familiar but far from overused — 3718th most popular boys' name in the United States in 2025 and 2921st in England & Wales.

US rank 2025

#3718

29 babies in 2025

England & Wales 2024

#2921

7 babies in 2024

US babies since 1880

1,676

First recorded 1985 · peak 2009

Trend

stable

Style: uncommon

Popularity over time

1981: 0 babies1982: 0 babies1983: 0 babies1984: 0 babies1985: 5 babies1986: 0 babies1987: 0 babies1988: 5 babies1989: 10 babies1990: 0 babies19901991: 13 babies1992: 10 babies1993: 17 babies1994: 7 babies1995: 21 babies1996: 17 babies1997: 18 babies1998: 35 babies1999: 48 babies2000: 52 babies20002001: 66 babies2002: 74 babies2003: 75 babies2004: 79 babies2005: 79 babies2006: 78 babies2007: 91 babies2008: 90 babies2009: 95 babies2010: 78 babies20102011: 80 babies2012: 61 babies2013: 58 babies2014: 54 babies2015: 51 babies2016: 41 babies2017: 31 babies2018: 33 babies2019: 24 babies2020: 20 babies20202021: 32 babies2022: 38 babies2023: 35 babies2024: 26 babies2025: 29 babies
US babies named Tiernan per year (Social Security Administration). Peak bar = 95.

Gender split

88% boys · 12% girls, based on US, UK and international usage.

Origins & cultures

More Irish boys' names

Other names starting with T