Boy Name · English Origin
Kou
Last reviewed: June 2026
Kou is a boy baby name of English origin, meaning "Pure hearted". It currently sits in the Rare tier of US baby names for 2026, and parents who love Kou often also consider Koa.
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Frequently asked about Kou
What does the name Kou mean?
Kou means "Pure hearted" and is of English origin.
What is the origin of Kou?
Kou originates in English naming tradition. Names of English origin often share recognizable sounds and cultural roots that shape how the name reads today.
How do you pronounce Kou?
Kou has 3 letters and is most commonly stressed on the first syllable. Tap the pronunciation player on this page to hear it spoken aloud.
Is Kou a boy's or girl's name?
Kou is primarily used as a boy's name in US records, though usage can vary by region and era.
How popular is Kou in 2026?
In our 2026 popularity tracker, Kou sits in the Rare tier — an uncommon, standout choice.
What names are similar to Kou?
Names that share Kou's sound and style include Koa, Kai, Kee, Kye, Kay. Open the "Names like Kou" rail on this page for the full list.