Kai

Sea, ocean — a unisex name of Hawaiian origin

GenderUnisex
OriginHawaiian
MeaningSea, ocean
PronunciationKY

Popularity of Kai in the United States

#1054Rank in 2025
234Births in 2025
#770 in 2021Peak Popularity
→ Stable10-Year Trend

Data: U.S. Social Security Administration (SSA). Based on all Social Security card applications for births in the United States.

Meaning & Origin of Kai

Kai is a multicultural name with distinct origins in several languages. In Hawaiian, it means "sea" or "ocean," evoking the vast Pacific waters central to Hawaiian culture. In Japanese, it can mean "shell," "ocean," or "restoration" depending on the kanji used. In Scandinavian languages, Kai is a diminutive of names like Kajetan, while in Mandarin Chinese it can mean "victory" or "open." This rich cross-cultural appeal has made Kai one of the fastest-rising baby names globally, beloved for its brevity, natural imagery, and international versatility.

Kai Around the World

Kai is used in 2 languages worldwide, with 5+ international variants.

Languages
GermanJapanese
Details

TypeUnisex name

International Variants
KayEnglish
KajDutch
QiChinese
KaiChinese
JiāChinese

Linguistic data: Wikidata (CC0). Variants and language usage may vary by region.

Nicknames for Kai

K

Famous People Named Kai

  • Kai Havertz — German footballer
  • Kai Greene — American bodybuilder
  • Kai Lenny — Hawaiian big-wave surfer

Similar Names to Kai

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Sibling Name Ideas for Kai

Looking for names that pair well with Kai? Here are some sibling name suggestions that share a similar style and feel.

Frequently Asked Questions

What does the name Kai mean?

Kai is a unisex name of Hawaiian origin meaning "Sea, ocean." Kai is a multicultural name with distinct origins in several languages. In Hawaiian, it means "sea" or "ocean," evoking the vast Pacific waters central to Hawaiian culture.

How do you pronounce Kai?

Kai is pronounced KY. Common variations include Cai, Kye, Kaj.

Is Kai a unisex name?

Yes, Kai is traditionally a unisex name. Popular nicknames include K.

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