Kasai

KA-SIE

Japanese

"fire, flame"

Kasai Origin and Meaning

The name Kasai is a girl's name meaning "fire, flame".

A Japanese name with real firepower, Kasai could be a name that's going places. It's a well-kept secret in the US — for girls at least. Given to just 6 baby girls in a recent year, it was nevertheless picked for 63 boys, making it a masculine leaning unisex option.

A romanization of the Japanese word for fire, particularly one spreading over a wide area, Kasai is also a surname in Japan. It was also chosen by actress Skai Jackson in 2025 for her baby, which may well generate more interest around the name.

The name Kasai coincides with the name of a river running though the Democratic Republic of the Congo.