Boy’s name · Aramaic, Greek, Latin

Thaddeus

How to say it: THAD-ee-us · /ˈθædiəs/

From Aramaic Thaddai, possibly meaning 'heart' or 'courageous'; borne by one of the twelve apostles.

Thaddeus was the 742nd most popular boys’ name in the United States in 2025, given to 314 babies (Social Security Administration). Its busiest decade was the 1910s, its births are down about 12% in ten years, and it is projected to slip to #789 by 2030.

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

#742for boys in 2025
1 in 10,558US babies
314born in 2025
#789projected for 2030
1910sits peak decade
under 1 in 200chance a classmate shares it

Key facts

Key facts about Thaddeus
Rank among boys’ names, 2025#742
Babies born in 2025314
Share of births1 in 10,558
Peak decade1910s
Change over 10 years−12%
Projected rank for 2030 (estimate)#789

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

Its life, decade by decade

Present without interruption for more than a century, Thaddeus peaked back in the 1910s. Still near that level today, a mild dip is anticipated.

1900195020002020–25
Peak: 244 per million births, 1910s.

What goes with it

Sturdy consonants tempered by breath, said THAD ee us, Thaddeus feels strong with biblical and saintly roots. Thad works as a trim short form, while Gideon shares its gravity.

Nicknames

  • Thad
  • Tad
  • Teddy

Honouring a Thaddeus in the family

In the classroom

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

Around the world

This spelling is used in English, Greek.

Famous people named Thaddeus

From Wikidata and Wikipedia

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