MallowbyNames

Isaah

eye-ZAY-uh · God is my salvation, an alternate spelling of Isaiah.

Peak popularity
2001
Usually for
Boys
Trend
Holding steady

Holding steady.

Popularity of Isaah since 1921

Babies named Isaah per year in U.S. Social Security records.

11233419602000Most births 2001Boys
Data table (by decade)
DecadeBoys
1920s5
1930s0
1940s0
1950s0
1960s0
1970s0
1980s0
1990s120
2000s247
2010s37
2020s0

Meaning & origin

Isaah is a modern variant spelling of the classic biblical name Isaiah. The name first appeared in U.S. records in 1921, but it has never reached widespread popularity. Its peak year of usage was 2001, indicating that it has remained a rare choice throughout its history. The trajectory of the name has been stable, suggesting it has maintained a small but consistent presence. While it does not appear in the top states list, Isaah offers a distinctive alternative to the more common Isaiah, appealing to parents looking for a unique but recognizable name with deep biblical roots. The spelling variation likely arose from phonetic respelling, as seen with names like Isa and Isaac. Overall, Isaah remains a rare and quietly used variant, reflecting a niche appeal rather than mainstream adoption.

Isaah is a variant spelling of the Hebrew name Yesha'yahu, meaning "Yahweh is salvation." The name comes from the prophet Isaiah in the Old Testament, whose book is a major prophetic work. This spelling variation emerged in English-speaking countries, likely influenced by the common spelling of names like Isa or Isaac.

Nicknames & variants

Nicknames: Izzy, Zay

Variants: Isaiah, Isiah, Isaia

Sibling names for Isaah

Names that share Isaah's style, for a brother or sister.

A parent animal hugging its little one, the personalized name page

I is for Isaah, our favorite little boy.

I is for Isaah…”

In a Mallowby alphabet book, Isaah's letter becomes Isaah's page: hand-illustrated, printed hardcover or paperback, made just for them.

Make Isaah's book

Books for siblings or grandkids? The second book is 15% off.

Questions parents ask

What does the name Isaah mean?
Isaah means "God is my salvation," derived from the Hebrew name Yesha'yahu.
How popular is the name Isaah currently?
Isaah is not currently ranked in the top 1000 names in the U.S. as of 2025, and its one-in-N rate (the number of babies per million with this name) is not available. It peaked in usage in 2001.
Is Isaah a boy's name or a girl's name?
Isaah is typically a boy's name.