The name Koa is a girl's name meaning "warrior; flowing tree native to Hawaii".

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The popularity of the Biblical Noah has led to a rise in Koa for boys, and since it boosted Noa up the charts for girls too, it was only so long before the rhyming Koa caught on as a unisex possibility. While it remains predominantly masculine and is given to boys 10 times more often in the states, a not insubstantial 114 girls were called Koa in a recent year.
 A Hawaiian name with a fierce meaning, Koa is also a type of tree native to the islands whose wood is favored for building canoes and surfboards. Considered sacred to some, the tree was used historically to make weapons, making it synonymous with strength and warriors. Both adventurous and gentle, Koa is a pleasingly balanced choice.
 
Sound-wise, it translates easily onto any gender, though for those not of Hawaiian heritage, it is worth bearing in mind its use as a traditionally masculine name.

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The name Koa peaked for girls at #1563 in 2024. The name is most popular in KOA, KOA, and KOA. Koa is also used for boys, ranking #269 in 2025.

The name Koa is a boy's name of Hawaiian origin meaning "warrior; flowing tree native to Hawaii".

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The international popularity of Noah has led to some parents searching for alternatives and the rhyming Koa is now attracting more attention than ever. With its cool K initial and summery, nature-inspired feel, this punchy three letter name has risen more than 600 places since it entered the US charts in 2017.
 
A Hawaiian name with a fierce meaning, Koa is also a type of tree native to the islands whose wood is favored for building canoes and surfboards. Considered sacred to some, the tree was also used historically to make weapons, making it synonymous with strength and warriors.
 
Given to around 1100 boys in the US last year, Koa is also in the Top 500 in the UK, and in the Top 100 in Australia, where it is also associated with the Aboriginal Koa people, whose name possibly comes from a word meaning "west". 
 
Striking the balance between gentle nature name and bold adventurer, Koa was chosen by guitarist Tom Dumont of the band No Doubt, a brother for Ace and Rio, and a name that fits right in with all of the band's stylishly named offspring, Mason, Magnolia, Ruby, Kingston, Zuma, Apollo, Coco, and Saffron. The YouTubers, Family Fizz, also have a son named Koa, who joins sisters Mia, Sienna, and Karma, and baseball player Francisco Lindor and his wife used Koa Amani for their son in 2025.

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The name Koa is currently ranked #269 in U.S. births. and peaked for boys at #269 in 2025. The name is most popular in KOA, KOA, and KOA. Koa is occasionally used for girls in 2025.

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