What origin is the name Itsuo?

Itsuo comes from Japanese naming traditions. Names from this origin often carry meanings tied to nature, virtues or heritage.

What are good sister names for Itsuo?

Names from the same japanese tradition pair naturally with Itsuo — for example Aya, Emi, Yuna. You can browse more on our japanese names page.

Itsuo

Discover the meaning and origin of the name Itsuo

Itsuo

Boy

Japanese

2 syllables

Itsuo (いつお) is a Japanese boy's name meaning "First son".

Parents who choose Itsuo pick a boy name from the Japanese tradition, meaning "First son". It has 2 syllables.

Native script: いつお
Origin: Japanese
Gender: Boy
Syllables: 2

Last updated 24 October 2026.

Meaning

First son

Popularity

No birth-record data (source: not in US birth records; popularity in India is not tracked)

Written as いつお

Quick answers about Itsuo

What does Itsuo mean?

Itsuo is a boy name of Japanese origin meaning "First son".

How popular is Itsuo?

We have no birth-record ranking for Itsuo: it is not in US records, and India publishes no national name rankings. The meter above fills in as parents here view, search for and save the name.

Sister names that go with Itsuo

Aya Emi Yuna Sakura Kaori Aiko

How to say Itsuo

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Name numerology

3is the Chaldean number for Itsuo.

Number 3 is linked with creativity, joy and self-expression.

More names with number 3

Numerology is a cultural tradition for fun, not a prediction.

Combine Itsuo with another name

Our free name combiner blends two names into new baby name ideas.

Names with a similar meaning to Itsuo

Itsuo means "First son" — these names share that spirit.

Mason — "Mason is an English surname for a stoneworker, from the Old French masson. It is now used as a first name." (English)
Harper — "Harper is an English occupational surname for a harp player. It became a popular first name in the 2000s." (English)
Scarlett — "Scarlett comes from an English surname for a seller of scarlet cloth. Gone with the Wind made it a first name." (English)
Leah — "Leah comes from the Hebrew Le'ah, possibly meaning 'weary' or 'delicate'. Leah is Jacob's first wife in the Bible." (Hebrew)
Lincoln — "Lincoln comes from the name of the English city, from the Latin Lindum Colonia, 'lake colony'. Abraham Lincoln made it a first name." (English)