Nikai is a very rare variant of Niko that peaked in 2008 and remains in steady use.
Nikai is predominantly a boy name. In 2025 it ranked #13,338 for boy births in the United States (and #27,466 across all names), given to 5 babies. Nikai first appears in 2000 and peaked in 2008 (11 births).
| Year | U.S. births | U.S. + territories | ♀ Rank | ♂ Rank |
|---|---|---|---|---|
| 2025 | 5 | 5 | — | #13,338 |
| 2024 | 11 | 11 | — | #7,611 |
| 2023 | 11 | 11 | — | #7,606 |
| 2022 | 6 | 6 | — | #11,884 |
| 2021 | 8 | 8 | — | #9,438 |
| 2020 | 7 | 7 | — | #10,281 |
| 2019 | 10 | 10 | — | #8,043 |
| 2016 | 5 | 5 | — | #13,628 |
| 2015 | 8 | 8 | — | #9,322 |
| 2014 | 7 | 7 | — | #10,409 |
| 2012 | 6 | 6 | — | #11,832 |
| 2011 | 6 | 6 | — | #11,857 |
| 2010 | 9 | 9 | — | #8,597 |
| 2009 | 8 | 8 | — | #9,620 |
| 2008 | 11 | 11 | — | #7,565 |
| 2007 | 7 | 7 | — | #10,568 |
| 2006 | 10 | 10 | #19,245 | #13,444 |
| 2005 | 8 | 8 | — | #8,870 |
| 2002 | 6 | 6 | — | #10,286 |
| 2001 | 7 | 7 | — | #8,959 |
| 2000 | 5 | 5 | — | #11,647 |