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Kai

Boy's name · #93 in the US (2025) · 2020s wave

94% boys · 6% girls — Kai is also given to girls: 234 in 2025, about 1 in 17 in recent years. Kai →

Popularity over time

Kai reached its best rank, #59, in 2022 and ranked #93 in 2025, with roughly 70,000 boys recorded since 1926.

Across the states

See where Kai is more common.

Appears in 2020-2025 birth records of 50 states. See the full state-by-state map on this page.

Around the world

See how Kai ranks in other countries and regions.

#23 in Australia (NSW) (2025) · #25 in Australia (QLD) (2025) · #32 in Australia (VIC) (2025) · #34 in Ireland (2025) · #39 in Netherlands (2025) · #40 in Scotland (2025) · #41 in Finland (other-lang.) (2025) · #44 in N. Ireland (2025) · #60 in Canada (2025) · #77 in Slovenia (2025) · #78 in England & Wales (2025) · #82 in Puerto Rico (2025) and 12 more.

Famous Kais

• Kai Siegbahn — Swedish physicist (1918–2007)
• Kai Havertz — German footballer (born 1999)
• Kai Hansen — German guitarist and singer (born 1963)
• Kai Cenat — American Twitch streamer (born 2001)
• Kai Greene — American personal trainer and bodybuilder (born 1975)

In stories & tradition

• Kai Hiwatari — Beyblade character
• Kai^it — Mortal Kombat (video game series)
• Kai Lung — Fictional character in a series of books by Ernest Bramah

What Kais become

Among 2,002 notable people named Kai:

Medical professionals appear 1.96× more often than among typical names — e.g. Kai Simons, Finnish physician (MD, PhD), biochemist and molecular biologist (born 1938).

Similar names: Ezekiel · Cash · Isaiah · Keanu · Kade · Makai

Browse more boy names — popularity, trends and eras for 5,700+ American names, free.

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