Tadeo

♂ Boy

Pronounced tah-DAY-oh /tɑːˈdeɪ.oʊ/High

Meaning: Spanish form of Thaddeus, from Aramaic Thaddai possibly meaning heart or breast; also linked to Hebrew todah meaning praise or thanksgivingMedium

In 30 seconds: Tadeo is the warm Spanish form of Thaddeus meaning 'heart' — an Apostle's name with Aramaic depth and a melodic three-syllable flow beloved in Latin American culture.

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Origin HighSpanish, Hebrew, Aramaic

MeaningSpanish form of Thaddeus, from Aramaic Thaddai possibly meaning heart or breast; also linked to Hebrew todah meaning praise or thanksgiving

U.S. rank (2025)#427 ↘ Falling

2025 U.S. births753 boys (0.04% of U.S. boys)

Peak year2024

Total births (all-time)≈ 5,842

Popularity in the U.S. · SSA data

U.S. births per year (Social Security Administration, 1880–present). Pink marker = peak year.

History & Origin

Tadeo is the Spanish form of Thaddeus, from Aramaic Thaddai, possibly meaning heart or courageous heart. In the New Testament, Thaddaeus (Jude) was one of the twelve Apostles.

Tadeo is widely used in Spanish-speaking Latin America and Spain. In the United States it has been growing in use within Hispanic communities as a distinctive alternative to Thadeus.

Did you know? Jude Thaddaeus, the Apostle, is the patron saint of lost causes and desperate situations — making Tadeo a name with profound spiritual significance for millions of Catholics worldwide.

Overall data confidence 82%

Behind the Name — Tadeo — etymology and biblical historyU.S. Social Security Administration — popularity data

Variations

ThaddeusTadeuszTaddeo

Nicknames

TadTade

Famous Bearers

★Thaddaeus (Apostle) (biblical)
One of the Twelve Apostles of Jesus; identified with Saint Jude, patron saint of lost causes.

If you like Tadeo…

Mateo— shares the warm Spanish -eo ending and the same melodic Latin American popularity

Romeo— fellow three-syllable Spanish-Italian classic with the same dramatic romantic warmth

Cleo— shares the short bright -eo ending and the same cross-cultural ancient-name feel

Marco— shares the Spanish-Latin heritage and the same strong masculine classical appeal

Frequently Asked

What does the name Tadeo mean?

Tadeo means heart or praise from Aramaic Thaddai; it is the Spanish form of the Apostle's name Thaddeus.

How do you pronounce Tadeo?

It is said tah-DAY-oh /tɑːˈdeɪ.oʊ/ — three syllables, stress on the second.

Is Tadeo a Spanish name?

Yes, Tadeo is the Spanish form of Thaddeus, widely used in Latin America and Spain.

Who was the biblical Thaddaeus?

Thaddaeus (Tadeo) was one of the Twelve Apostles, often identified with Saint Jude, patron of lost causes.