Boy Name · Aramaic Origin
Thaddeus
Last reviewed: June 2026
Thaddeus is a boy baby name of Aramaic origin, meaning "Heart". It currently sits in the Rare tier of US baby names for 2026, and parents who love Thaddeus often also consider Thadeus.
Names like Thaddeus
Frequently asked about Thaddeus
What does the name Thaddeus mean?
Thaddeus means "Heart" and is of Aramaic origin.
What is the origin of Thaddeus?
Thaddeus originates in Aramaic naming tradition.
How do you pronounce Thaddeus?
Thaddeus has 8 letters and is most commonly stressed on the first syllable.
Is Thaddeus a boy's or girl's name?
Thaddeus is primarily used as a boy's name in US records.
How popular is Thaddeus in 2026?
In our 2026 popularity tracker, Thaddeus sits in the Rare tier — an uncommon, standout choice.
What names are similar to Thaddeus?
Names that share Thaddeus's sound and style include Thadeus, Thaddaeus, Titus, Theodis, Theotis.