Isiac

♂ Boy

Pronounced EYE-zik /ˈaɪzɪk/Low

Meaning: Isiac is an unusual respelling of Isaac, the Hebrew biblical name from 'Yitzhak,' 'he will laugh' or 'laughter,' recalling Sarah's laughter at the promise of a son. The -iac spelling is a phonetic reworking rather than a distinct name.Low

In 30 seconds: Isiac is a rare respelling of Isaac, Hebrew for 'he will laugh.' It stayed rare and peaked around 2001 (said EYE-zik).

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Origin LowHebrew

MeaningIsiac is an unusual respelling of Isaac, the Hebrew biblical name from 'Yitzhak,' 'he will laugh' or 'laughter,' recalling Sarah's laughter at the promise of a son. The -iac spelling is a phonetic reworking rather than a distinct name.

U.S. rank (2010)#10081 ↗ Rising

2010 U.S. births7 boys (0.00% of U.S. boys)

Peak year2001

Total births (all-time)≈ 195

Popularity in the U.S. · SSA data

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

SSA data updated May 2026. How we source & verify this data.

History & Origin

Isiac is a phonetic respelling of Isaac, from the Hebrew 'Yitzhak,' 'he laughs.' A cornerstone biblical name, Isaac has stayed in steady use; this spelling is a rare modern variant that keeps the sound and meaning intact.

It was never common in this spelling, given to only about fifteen boys a year at its peak around 2001, while the standard Isaac remained widespread. A boy named Isiac then is in his twenties today.

Did you know? The Hebrew name behind Isiac, Yitzhak, means 'he will laugh,' tied in the Bible to Sarah's laughter when told she would bear a son in old age.

Overall data confidence 25%

References - Isiac — Respelling of Isaac; Hebrew Yitzhak 'he will laugh'

Variations

IsaacIzakIsak

Nicknames

IkeIzzy

Famous Bearers

Famous bearers coming soon.

If you like Isiac…

Isaac— the biblical name Isiac respells

Isiah— a like biblical boy's name

Izak— a related respelling

Isak— a Scandinavian form of Isaac

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Frequently Asked

What does the name Isiac mean?

It is a respelling of Isaac, from the Hebrew 'Yitzhak,' meaning 'he will laugh' or 'laughter.'

How do you pronounce Isiac?

It is said EYE-zik /ˈaɪzɪk/ - two syllables.

Is Isiac a boy or girl name?

Isiac is used as a boy's name.

How popular is Isiac?

It has always been rare in this spelling, given to only about fifteen boys a year at its peak in the early two-thousands.