Coi

♀ Girl

Pronounced KOY /ˈkɔɪ/High

Meaning: A spelling of Coy — from the word 'coy', shy, demure (Old French quei); also echoes the Japanese koi ('carp'); here for girls; routes layeredLow

In 30 seconds: Shy; demure: Coi spells Coy — 'shy, demure' (and a koi-fish echo). Crisp, cool, and warm. Used for both sexes (said 'KOY').

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Origin LowEnglish, Japanese

MeaningA spelling of Coy — from the word 'coy', shy, demure (Old French quei); also echoes the Japanese koi ('carp'); here for girls; routes layered

U.S. rank (2025)#6374 ↘ Falling

2025 U.S. births18 girls (0.00% of U.S. girls)

Peak year2023

Total births (all-time)≈ 119

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

Coi is a spelling of Coy — from the word coy, 'shy, demure, modest' (Old French quei, 'quiet') — and it also echoes the Japanese koi, the bright ornamental carp, a symbol of perseverance (routes layered, which we note; the rapper Coi Leray). A crisp, cool, modern one-syllable name, used for both sexes, here for girls (slug distinguished; said 'KOY').

It registers thinly in records. Rare, shy-and-demure at the root, and cool.

Did you know? Coi spells Coy — 'shy, demure, modest' (Old French quei) — and echoes the bright koi (Japanese carp) — a crisp, cool one-syllable name, used for both sexes (the rapper Coi Leray; the routes are layered, which we note; said 'KOY').

Overall data confidence 45%

References — Coy — routes layered

Variations

CoyKoiCoie

Nicknames

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Famous Bearers

Famous bearers coming soon.

If you like Coi…

Coy— the standard spelling

Koi— the fish it echoes

Joy— a sound-neighbor one-syllable girls' name

Cleo— another short bold girls' name

Explore names like Coi

By themeuncertain english unisex word-name japanese

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Frequently Asked

What does the name Coi mean?

Coi spells Coy — 'shy, demure'; it also echoes the koi fish. The routes are layered.

How do you pronounce Coi?

It's said KOY /ˈkɔɪ/ — one syllable.

Is Coi a boy or girl name?

Coi is used for both sexes; this page covers its use as a girl's name.

How popular is Coi?

Coi is a very rare name in the U.S.