Kasai
Kasai is a boy name of African origin meaning “From the Kasai River”, pronounced kah-SY. It ranked #639 in the United States in 2025, given to 437 babies, and peaked at #639 in 2025. Common nicknames: Kas, Sai.
How popular is Kasai in the United States?
Data: U.S. Social Security Administration (SSA). Based on all Social Security card applications for births in the United States.
What does Kasai mean, and where does it come from?
Kasai is the name of a great river of central Africa and of the provinces it runs through in the Democratic Republic of the Congo — one of the Congo's largest tributaries, and a region known for its diamonds and its Kuba textiles. It is also a common Japanese surname, written with characters meaning river and west. As an American given name it is very new: recorded from 1996, it entered the top thousand for the first time in 2025. Two open syllables and a meaning tied to a specific place on the map.
How is Kasai used around the world?
Kasai is used in 1 languages worldwide.
TypeMale given name
Linguistic data: Wikidata (CC0). Variants and language usage may vary by region.
What are the nicknames for Kasai?
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Sibling Name Ideas for Kasai
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Frequently Asked Questions
What does the name Kasai mean?
Kasai is a boy name of African origin meaning "From the Kasai River." Kasai is the name of a great river of central Africa and of the provinces it runs through in the Democratic Republic of the Congo — one of the Congo's largest tributaries, and a region known for its diamonds and its Kuba textiles. It is also a common Japanese surname, written with characters meaning river and west.
How do you pronounce Kasai?
Kasai is pronounced kah-SY. Common variations include Kasay, Kassai, Kesai.
Is Kasai a boy name?
Yes, Kasai is traditionally a boy name. Popular nicknames include Kas, Sai.