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Thomas

Say it: TOM-us

BoyMeans twin6 letters2 syllables

#16

in Ireland (2025)

#17 with spellings combined

211

babies in 2025

#5

best rank (1965)

36,744

babies since 1964

Down 6

10-year rank change

Thomas through the years

Compare with another name →
Thomas: babies per year in Ireland, 1964 to 202505001,0001,500196419701980199020002010202020251998: CSO series changePeak 1965: 1,367
Thomas: rank per year in Ireland, 1964 to 2025#1#10#50196419701980199020002010202020251998: CSO series change
Thomas: per 10,000 boys per year in Ireland, 1964 to 20250100200300400500196419701980199020002010202020251998: CSO series change
Babies per 10,000 boys listed by the CSO that year, which evens out changes in the number of births.
Show the numbers
YearBabies (boys)Rank
2025211#17
2024230#15
2023227#18
2022246#17
2021288#16
2020271#20
2019284#20
2018324#14
2017291#19
2016328#15
2015379#11
2014362#17
2013412#11
2012403#17
2011403#18
2010347#22
2009411#18
2008432#19
2007440#14
2006432#13
2005397#16
2004371#20
2003375#14
2002349#18
2001377#14
2000351#18
1999332#19
1998306#17
1997449#16
1996476#15
1995387#17
1994451#13
1993466#14
1992520#12
1991503#14
1990502#15
1989499#12
1988592#10
1987634#10
1986658#11
1985687#10
1984730#9
1983707#10
1982828#9
1981823#9
1980844#8
1979794#9
1978811#9
1977770#9
1976826#8
1975823#8
1974884#8
1973996#7
1972942#7
19711,054#6
19701,095#6
19691,139#5
19681,119#6
19671,175#6
19661,265#6
19651,367#5
19641,349#6

Source: CSO, Irish Babies' Names (VSA50, VSA60), CC BY 4.0. Spellings with and without fadas are combined; the CSO only recorded fadas from 2018.

★ What does Thomas mean?

Twin

Aramaic, through Greek and Latin, the nickname of the apostle Thomas.

Say it right

TOMus

The Th is a plain T. The Irish form, Tomás, is said tuh-MAWSS in Munster and TUM-awss in Connacht.

Not:THOM-us

The story of Thomas

Thomas comes from an Aramaic word meaning twin. It was the nickname of one of the twelve apostles, and the Gospel of John also gives it in Greek as Didymus, which means the same thing. The name passed through Greek and Latin into English and has been a common given name since the Middle Ages. Its Irish form is Tomás.

The apostle is best remembered as doubting Thomas, because he refused to believe that Jesus had risen until he had seen the wounds for himself.

Thomas has been in the Irish top 25 in every year of the CSO records. In 1964 and 1965 more than 1,300 boys a year were named Thomas. It reached number 5 in 1965, and was 17th in 2025 on the combined count. In Northern Ireland it reached sixth place in 2020.

Say it differently where you're from, or spotted something wrong? Tell us.

Sources
  • Wiktionary: Thomas (English proper noun)
  • Wiktionary: Tomás (Irish proper noun)
  • Wikipedia: Thomas (given name)
  • Wikipedia: Thomas the Apostle
  • CSO VSA50, Boys Names in Ireland with 3 or More Occurrences
  • NISRA, First Forenames Given to Babies Registered in Northern Ireland

At a glance

Similar names

TomásJamesWilliamMatthew

Sibling ideas

AnnaKateLucy

Nicknames

TomTommy

Spellings counted here

Spelling2025All years
Thomas21136,737
Thomásunder 37

In Northern Ireland

#18 in 2025 with 74 babies. Best rank #6 (2020); 4,353 babies since 1997.

Source: NISRA, Open Government Licence.

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