Kai
Kai first appears in US records in 1926. It peaked in 2022, when 5,374 boys were given the name; in 2025 there were 3,768.
Source: US Social Security Administration.
What does Kai mean?
Kai arises independently in several cultures: it means “sea” in Hawaiian, and also appears in Welsh, Scandinavian, Japanese and other traditions with distinct meanings.
Variants & spellings
- Kaii
- Cai
Names like Kai
Frequently asked questions
What does the name Kai mean?
Kai means Sea (Hawaiian). Kai arises independently in several cultures: it means “sea” in Hawaiian, and also appears in Welsh, Scandinavian, Japanese and other traditions with distinct meanings.
What is the origin of the name Kai?
Kai is of Multiple origin.
How do you pronounce Kai?
Kai is pronounced “KY.”
Is Kai a boy or a girl name?
Kai is most commonly used as a boy name.
How popular is the name Kai?
In 2025, Kai ranked #93 among boys’ names in the United States, according to U.S. Social Security Administration data.
When was the name Kai most popular?
Kai was most popular in 2022, when about 5,374 US babies were given the name that year, according to US Social Security Administration records.