Is Kasai a boy's or girl's name?

Kasai is primarily a boy's name. It is also used as a girl's name, with 11 recorded births.

When was Kasai most popular?

Kasai reached its peak popularity in 2024 with 94 births that year. It is currently ranked #1749 in the U.S.

How popular is the name Kasai?

Kasai is currently ranked #1749 in the U.S. (2024). It has been given to 627 babies since 1996.

Kasai

An uncommon Japanese pick — distinctive and rare.

Boy's name| Also girlsJapaneseRising fast

#1749▲ 483in 2024

Meaning & Origin

A city in Hyōgo Prefecture, Japan.

Kasai is a boy's and girl's baby name of Japanese origin, from the Japanese kasai (火災) meaning 'fire' or alternately a geographic name from the Kasai River in Central Africa (Democratic Republic of Congo), with the African name meaning 'cross the river.' As a given name, Kasai has a striking, elemental quality.

About 627 U.S. births are recorded — rare and genuinely striking. Kasai appeals to parents who love short, powerful names with an exotic geographic or elemental resonance.

Compare Kasai with another name

Popularity Over Time

Kasai climbed 7707 spots in the last 20 years — from #9456 to #1749.

Popularity by Decade

Decade-by-decade popularity data for Kasai
Decade	Births	Avg Rank	Trend
2020s	312	#2342	▲
2010s	206	#6431	▲
2000s	97	#8215	▲
1990s	12	#9045	—

Year-by-Year Data

View complete yearly data(27 years, 1996–2024)

Year-by-year popularity data for the name Kasai
Year	Births	Rank	Change
2024	94	#1749	+30 (46.9%)
2023	64	#2232	+7 (12.3%)
2022	57	#2451	+12 (26.7%)
2021	45	#2794	-7 (-13.5%)
2020	52	#2485	-18 (-25.7%)
2019	70	#2071	+38 (118.8%)
2018	32	#3480	+6 (23.1%)
2017	26	#4042	+7 (36.8%)
2016	19	#5045	+4 (26.7%)
2015	15	#5875	+5 (50.0%)
2014	10	#7853	+2 (25.0%)
2013	8	#9230	-3 (-27.3%)
2012	11	#7301	+3 (37.5%)
2011	8	#9193	+1 (14.3%)
2010	7	#10224	0
2009	7	#10445	-1 (-12.5%)
2008	8	#9437	0
2007	8	#9338	-1 (-11.1%)
2006	9	#8393	-1 (-10.0%)
2005	10	#7404	+3 (42.9%)

Source: U.S. Social Security Administration. Showing years with 5+ recorded births.

Kasai as a Girl's Name

While overwhelmingly a boy's name, Kasai has also been given to 11 girls in the U.S. since 2019.

Unranked

Current rank

Total births

2019

Peak year

Compare Kasai as boy vs girl

Frequently Asked

Can Kasai be used for both boys and girls?

Yes, Kasai is used for both boys and girls. As a boy's name, it currently ranks #1749. As a girl's name, it is not currently in the top rankings.

Last updated May 2026 · Data: U.S. Social Security Administration (1996–2024) · Methodology