Nameling

Thomasin

Girl · Aramaic

Thomasin is a girls' name of Aramaic origin. In 2025 it ranked 8,360th for girls in the US (12 babies).

What does Thomasin mean?

Aramaic

A female given name from Aramaic, a feminine form of Thomas.

From Wiktionary, CC BY-SA 4.0.

Is Thomasin a girl's or a boy's name?

Thomasin is a girls' name. In 2025, it was given to 12 girls in the US. Too few boys were given it to be listed.

How popular is Thomasin in the UK?

No girls in the UK were given it in 2025, or too few to be listed. Its busiest year was 2022, with 5 girls.

1998Busiest: 5 in 20222023
Thomasin in the UK, year by year
YearGirlsRank
20234#4,915
20225#4,168
20211#7,491
20200–
20190–
20183#5,896
20170–
20160–
20150–
20140–
20130–
20120–
20110–
20100–
20090–
20080–
20070–
20060–
20050–
20040–
20031#5,865
20020–
20011#5,353
20000–
19994#3,374
19983#4,026

How popular is Thomasin in the US?

Rank in 2025
#8,360among girls
Babies in 2025
12about 1 in 130,000 girls
Five-year trend
Too rare to calltoo few babies to tell
Same name in a class
under 1%chance among 15 girls

In 2025, 12 girls in the US were named Thomasin, making it the 8,360th most popular name for girls. Five years earlier, in 2020, it was 13,448th. Its busiest year was 2023, with 16 girls. It first appears in the records in 1963.

Half of all the girls named Thomasin in the US since 1880 were born between 2021 and 2024, the years shaded on the chart below.

1963Busiest: 16 in 20232025
Thomasin in the US, year by year
YearGirlsRank
202512#8,360
20247#12,156
202316#6,917
20229#10,377
202112#8,459
20206#13,448
20190–
20180–
20170–
20160–
20150–
20140–
20130–
20120–
20110–
20100–
20090–
20080–
20070–
20060–
20050–
20040–
20030–
20020–
20010–
20000–
19990–
19980–
19970–
19960–
19950–
19940–
19930–
19920–
19910–
19900–
19890–
19880–
19870–
19860–
19850–
19840–
19830–
19820–
19810–
19800–
19790–
19780–
19770–
19760–
19750–
19740–
19730–
19720–
19715#8,322
19700–
19690–
19680–
19670–
19660–
19650–
19640–
19635#6,591

Names like Thomasin

Names given in the same years and the same naming tradition, with a similar sound.

Names related to Thomasin

More Aramaic names