Kasai
- Gender
- Boy
- Say it
- ka-SY
- UK rank, 2025
- #2,342 for boys
- US rank, 2025
- #639 for boys
Kasai is a boys' name. In 2025 it ranked 2,342nd for boys in the UK (10 babies) and 639th for boys in the US (437 babies).
What does Kasai mean?
Uncertain; matches the Kasai River in Central Africa
Shares its name with the Kasai River, a major tributary of the Congo.
Is Kasai a girl's or a boy's name?
Kasai is a boys' name. In 2025, it was given to 10 boys in the UK and 7 girls and 437 boys in the US.
How popular is Kasai in the UK?
- Rank in 2025
- 2,342nd among boys
- Babies in 2025
- 10 about 1 in 30,000 boys
- Five-year trend
- Rising fast up 467% in five years
- Same name in a class
- under 1% chance among 15 boys
In 2025, 10 boys in the UK were named Kasai, making it the 2,342nd most popular name for boys. Five years earlier, in 2020, it was 4,803rd.
2025 had the most boys named Kasai of any year since it first appeared, in 2020.
Among boys in 2025, it was 2,265th in England and Wales.
Kasai in the UK, year by year
| Year | Boys | Rank |
|---|---|---|
| 2025 | 10 | #2,342 |
| 2024 | 6 | #3,335 |
| 2023 | 1 | #6,556 |
| 2022 | 3 | #5,017 |
| 2021 | 0 | – |
| 2020 | 3 | #4,803 |
How popular is Kasai in the US?
- Rank in 2025
- 639th among boys
- Babies in 2025
- 437 about 1 in 3,900 boys
- Five-year trend
- Rising fast up 287% in five years
- Same name in a class
- under 1% chance among 15 boys
In 2025, 437 boys in the US were named Kasai, making it the 639th most popular name for boys. Five years earlier, in 2020, it was 2,466th. It first appears in the records in 1996. 7 girls were also named Kasai in 2025 (11,928th for girls).
It has been given to more boys each year for the last 4 years. 2025 had the most boys named Kasai of any year since it first appeared, in 1996.
Half of all the boys named Kasai in the US since 1880 were born between 2019 and 2025, the years shaded on the chart below.
In 2025, 488 boys in the US were given Kasai or a name that sounds the same. With every name's spellings counted this way, that ranks #574, up from #639 for this spelling alone.
- Kasai 437
- Casai 21
- Khasai 16
- Kasaii 14
Kasai in the US, year by year
| Year | Boys | Rank |
|---|---|---|
| 2025 | 437 | #639 |
| 2024 | 95 | #1,735 |
| 2023 | 64 | #2,220 |
| 2022 | 57 | #2,437 |
| 2021 | 45 | #2,774 |
| 2020 | 52 | #2,466 |
| 2019 | 70 | #2,061 |
| 2018 | 32 | #3,442 |
| 2017 | 26 | #3,989 |
| 2016 | 19 | #4,941 |
| 2015 | 15 | #5,742 |
| 2014 | 10 | #7,557 |
| 2013 | 8 | #8,784 |
| 2012 | 11 | #7,044 |
| 2011 | 8 | #8,760 |
| 2010 | 7 | #9,686 |
| 2009 | 7 | #9,859 |
| 2008 | 8 | #9,013 |
| 2007 | 8 | #8,909 |
| 2006 | 9 | #7,992 |
| 2005 | 10 | #7,089 |
| 2004 | 7 | #8,921 |
| 2003 | 12 | #5,870 |
| 2002 | 22 | #3,789 |
| 2001 | 6 | #9,236 |
| 2000 | 8 | #7,409 |
| 1999 | 7 | #7,867 |
| 1998 | 0 | – |
| 1997 | 0 | – |
| 1996 | 5 | #9,008 |
Names like Kasai
Names given in the same years and the same naming tradition, with a similar sound.
Kairo, Yusuf, Ruairi, Loki, Rumi, Musa, Yunus, Yahya, Koa, Bodhi, Zayan, Hamza
Other spellings of Kasai
Names related to Kasai
Sources
Figures from Baby names in England and Wales (Office for National Statistics), Babies' first names (National Records of Scotland), Baby names (Northern Ireland Statistics and Research Agency) and Popular Baby Names (US Social Security Administration). Nameling last updated them on 20 October 2026. How the figures are worked out, and the data to download.
To cite this page: Nameling, “Kasai: name meaning, origin and popularity”, https://www.nameling.co.uk/names/kasai, updated 20 October 2026.